Medicare Enrolled

Dr. Kok Chye Tan, MD

Neuroradiology Physician · Monterey Park, CA
Practice pattern: Mixed Practice — Diverse clinical practice across multiple procedure types
Low-engagement
525 N GARFIELD AVE, Monterey Park, CA 91754
6265226030
In practice since 2007 (18 years)
NPI: 1891974283 verify on NPPES ↗
Very High
DATA COVERAGE
Data in 4 of 4 federal sources
Measures public federal data availability — not provider quality
Informational, not a quality rating. This page presents federal public records about Dr. Tan from CMS (NPPES, Open Payments, Medicare Provider Utilization, PECOS). It is not medical advice, an endorsement, or a judgment of clinical quality. Always consult the provider directly and a licensed clinician for medical decisions. Read methodology →
Are you Dr. Tan? Request a correction or review of any data shown here. Provider portal →

What this data tells you about Dr. Tan

Dr. Kok Chye Tan is a neuroradiology physician in Monterey Park, CA, with 18 years of NPI registration. Based on federal Medicare data, Dr. Tan performed 24,790 Medicare services across 18,208 unique beneficiaries.

Between the years covered by Open Payments, Dr. Tan received a total of $3,145 from 20 pharmaceutical and/or device companies across 66 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in neuroradiology physician. Most payments are for meals and travel — low-value interactions common across virtually all practicing physicians. Patients may wish to discuss these relationships with their provider.

The Data Coverage level for Dr. Tan is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.

✓ 18 years in practice ▲ Top 8% volume in CA $3,145 industry payments

Medicare Practice Summary

Medicare Utilization ↗
24,790
Medicare services
Top 8% in CA for neuroradiology physician
18,208
Unique beneficiaries
$15
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~1,377 Medicare services per year of practice

Top procedures by volume

Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.

Procedure Volume Avg. paid Avg. submitted
Chest X-ray, 1 view
An X-ray image of the chest taken from a single angle. This imaging test is used to visualize the structures within the chest cavity.
14,245 $7 $248
CT scan of head/brain, without contrast
A CT scan uses X-rays to create detailed images of the head or brain without the use of contrast dye.
2,136 $31 $608
Abdominal X-ray, 1 view
An X-ray image of the abdomen taken from a single angle to visualize internal structures.
1,867 $7 $183
Ultrasound of arm or leg veins
An ultrasound exam of the veins in the arm or leg. The test uses sound waves to check blood flow and may include compression and other maneuvers.
357 $27 $409
CT scan of upper spine, without contrast
A CT scan uses X-rays to create detailed images of the upper spine. This procedure is performed without the use of contrast dye.
333 $36 $611
Bone density scan (DEXA)
A test that uses low-dose X-rays to measure bone mineral density in the hip, pelvis, and spine. It helps assess bone strength and risk of fractures.
329 $10 $183
Ultrasound of head and neck blood flow, bilateral
An ultrasound exam that uses sound waves to visualize and assess blood flow in the vessels of both the head and the neck.
300 $29 $400
CT scan of abdomen and pelvis, without contrast
A computed tomography scan that creates detailed images of the abdominal and pelvic organs. The procedure is performed without the use of intravenous contrast dye.
262 $64 $1,637
Ultrasound of arm or leg veins
An ultrasound exam of the veins in one arm or leg using compression and other maneuvers to assess blood flow and check for blockages.
216 $17 $356
CT scan of head blood vessels with contrast
A CT scan that uses contrast dye to create detailed images of the blood vessels in the head.
215 $68 $1,241
CT scan of chest blood vessels with contrast
A CT scan that uses contrast dye to create detailed images of the blood vessels in the chest.
215 $68 $1,013
CT scan of neck blood vessels with contrast
A computed tomography scan that uses dye to visualize the blood vessels in the neck. This imaging test helps examine the structure and flow within the neck's vascular system.
209 $65 $952
Complete ultrasound of retroperitoneum
An ultrasound examination of the structures located behind the abdominal cavity.
199 $28 $409
MRI scan of brain, without contrast
A magnetic resonance imaging test of the brain that does not use contrast dye. This procedure creates detailed images of the brain's structure using magnetic fields and radio waves.
175 $56 $745
Ankle X-ray, minimum 3 views
An X-ray imaging test of the ankle that captures at least three different angles to evaluate the bones and joints.
164 $6 $184
Limited abdominal ultrasound
A focused ultrasound examination of the abdomen to evaluate specific organs or areas. This procedure uses sound waves to create images of internal structures.
158 $21 $409
Knee X-ray, 3 views
An X-ray imaging test of the knee joint that captures three different angles to evaluate the bones and surrounding structures.
150 $6 $187
CT scan of lower spine, without contrast
A computed tomography scan that creates detailed images of the lower spine using X-rays without the use of contrast dye.
143 $37 $452
Wrist X-ray, minimum 3 views
An imaging test using X-rays to capture at least three different angles of the wrist bones and joints.
142 $6 $183
Pelvis X-ray, 1-2 views
An X-ray imaging test of the pelvic area using one to two different angles to visualize the bones and joints.
138 $7 $183
Elbow X-ray, minimum 3 views
An X-ray imaging test of the elbow joint that captures at least three different angles to visualize the bones and surrounding structures.
124 $6 $183
Ultrasound scan of chest
An imaging test that uses sound waves to create pictures of the structures inside the chest.
119 $23 $231
X-ray of thigh bone, minimum 2 views
An X-ray imaging test of the thigh bone using at least two different angles to visualize the bone structure.
114 $7 $183
Ultrasound of leg arteries or grafts
An imaging test that uses sound waves to create pictures of the blood vessels in the legs or any surgical grafts present.
113 $28 $351
CT scan of abdomen and pelvis with contrast
A CT scan that uses dye to create detailed images of the abdomen and pelvis. This imaging test helps doctors examine internal organs and structures in these areas.
109 $68 $1,671
Nuclear medicine liver and bile duct scan
A nuclear medicine imaging test to evaluate the liver and bile duct system.
107 $28 $352
X-ray of lower leg, 2 views
An X-ray imaging test of the lower leg using two different angles to visualize the bones and surrounding structures.
105 $6 $183
Lung ventilation and perfusion scan
A nuclear medicine test that uses radioactive tracers to evaluate both air flow (ventilation) and blood flow (perfusion) in the lungs.
99 $40 $549
Complete ultrasound of abdomen
A diagnostic imaging test that uses sound waves to create detailed pictures of the organs and structures within the abdomen.
94 $30 $380
CT scan of face, without contrast
A computed tomography scan that creates detailed images of the facial structures. This procedure is performed without the use of intravenous contrast dye.
91 $30 $678
CT scan of chest with contrast
A computed tomography scan of the chest using a contrast dye to enhance the visibility of internal structures.
85 $44 $666
X-ray of upper arm, minimum of 2 views
An X-ray imaging test of the upper arm that captures at least two different views to evaluate the bones and surrounding structures.
82 $6 $183
Knee X-ray, 1-2 views
An X-ray imaging test of the knee joint using one to two different angles to visualize the bones and surrounding structures.
80 $6 $185
Foot X-ray, 3+ views
An X-ray imaging test of the foot that captures at least three different views to evaluate the bones and joints.
79 $6 $183
Chest X-ray, 2 views
An X-ray imaging test of the chest that captures two different angles to visualize the lungs, heart, and chest wall.
62 $9 $118
X-ray of forearm, 2 views
An X-ray imaging test of the forearm using two different angles to visualize the bones and surrounding structures.
57 $6 $183
CT scan of middle spine, without contrast
A CT scan of the middle spine performed without the use of contrast dye. This imaging test uses X-rays to create detailed pictures of the vertebrae and surrounding structures.
55 $36 $450
Nuclear medicine lung circulation study
A nuclear medicine test that uses a small amount of radioactive material to create images of blood flow through the lungs.
52 $27 $320
X-ray of lower and sacral spine, 2-3 views
An X-ray imaging test that captures 2 to 3 views of the lower back and sacral spine to visualize the bones and joints in this area.
49 $8 $183
Nuclear stress test of heart muscle
A nuclear medicine imaging test that evaluates blood flow to the heart muscle at rest and during stress using a special camera.
49 $61 $640
X-ray of hand, minimum of 3 views
An X-ray imaging test of the hand that captures at least three different angles to visualize the bones and joints.
45 $6 $187
Small intestine X-ray with single contrast
An X-ray imaging test of the small intestine using a single contrast agent to visualize the digestive tract.
42 $31 $439
Elbow X-ray, 2 views
An X-ray imaging test of the elbow joint using two different angles to visualize the bones and surrounding structures.
41 $6 $183
X-ray of ankle, 2 views
An X-ray imaging test of the ankle using two different angles to visualize the bones and joints.
41 $5 $183
CT scan of pelvis, without contrast
A CT scan that uses X-rays to create detailed images of the pelvic area without the use of contrast dye.
38 $41 $570
Nuclear medicine study to assess blood loss
A nuclear medicine test used to evaluate and locate active bleeding within the body.
38 $39 $419
Ultrasound of leg arteries or grafts
An ultrasound exam that uses sound waves to create images of the arteries in one leg or any grafts present in that leg.
37 $18 $258
Nuclear stress test of heart muscle
A nuclear medicine imaging test that creates single 2D images of heart muscle activity both at rest and during stress to evaluate blood flow and function.
36 $50 $1,060
Ultrasound of head and neck soft tissue
This procedure uses sound waves to create images of the soft tissues in the head and neck area. It allows for the visualization of structures beneath the skin without using radiation.
35 $22 $265
X-ray of finger, minimum of 2 views
An X-ray imaging test of a finger using at least two different angles to visualize the bones and surrounding structures.
33 $5 $183
CT scan of neck soft tissue, without contrast
A CT scan that creates detailed images of the soft tissues in the neck using X-rays without the use of contrast dye.
31 $50 $547
CT scan of abdominal and pelvic blood vessels with contrast
A computed tomography scan that uses contrast dye to visualize the blood vessels in the abdomen and pelvis.
30 $87 $980
Limited ultrasound of pelvis
A focused ultrasound exam of the pelvic area to evaluate specific structures. This procedure provides images of the pelvis to assist in medical assessment.
27 $20 $244
X-ray of foot, 2 views
An X-ray imaging test of the foot using two different angles to create pictures of the bones and joints.
26 $6 $183
Ultrasound of scrotum
An imaging test that uses sound waves to create pictures of the scrotum and its contents. It helps evaluate the testicles and surrounding structures.
25 $26 $307
MRI of head blood vessels without contrast
An MRI scan that creates detailed images of the blood vessels in the head without using contrast dye.
24 $45 $778
MRI of brain with and without contrast
An MRI scan of the brain using contrast dye both before and after administration to provide detailed images of brain structures.
24 $71 $1,274
Limited retroperitoneal ultrasound
A focused ultrasound exam of the area behind the abdominal cavity to evaluate specific structures.
22 $20 $241
Screening mammography
An X-ray of the breast used to detect breast cancer in women who have no signs or symptoms of the disease.
22 $102 $540
CT scan of leg, without contrast
A computed tomography scan of the leg performed without the use of contrast dye. This imaging test uses X-rays to create detailed cross-sectional images of the leg's internal structures.
21 $37 $453
CT scan of chest, without contrast
A computed tomography scan of the chest area that uses X-rays to create detailed images without the use of contrast dye.
20 $40 $987
3D screening mammography (tomosynthesis)
A screening imaging test of the breast using 3D technology to detect potential abnormalities.
20 $26 $135
Knee X-ray, 4 or more views
An imaging test using X-rays to create multiple pictures of the knee joint from different angles.
19 $8 $183
Shoulder X-ray, 2+ views
An X-ray imaging test of the shoulder joint using at least two different angles to visualize the bones and surrounding structures.
18 $7 $132
Rib X-ray, minimum 3 views
An X-ray imaging test of the ribs on one side of the body. The procedure includes a minimum of three different views to capture detailed images.
17 $10 $183
CT scan of abdominal aorta and leg arteries with contrast
A CT scan that uses contrast dye to create detailed images of the abdominal aorta and the arteries in both legs.
17 $97 $1,159
Ultrasound of abdomen and pelvis blood flow
An ultrasound exam that uses sound waves to visualize and assess blood flow through the arteries and veins in the abdomen and pelvis.
17 $30 $812
X-ray of soft tissue of neck
An X-ray imaging test that produces pictures of the soft tissues in the neck area.
16 $7 $183
X-ray of shoulder, 1 view
An X-ray image of the shoulder joint taken from a single angle. This imaging test is used to visualize the bones and surrounding structures of the shoulder.
16 $6 $183
Nuclear medicine liver and bile duct study with drugs
A nuclear medicine imaging test to examine the liver and bile duct system using administered drugs.
16 $32 $651
CT scan of neck soft tissue with contrast
A computed tomography scan that uses contrast dye to create detailed images of the soft tissues in the neck.
15 $49 $639
MRI of neck blood vessels without contrast
This procedure uses magnetic resonance imaging to create detailed pictures of the blood vessels in the neck without the use of contrast dye.
15 $41 $671
X-ray of upper spine, 2-3 views
An X-ray imaging test of the upper spine using two to three different angles to visualize the bones and structures.
15 $6 $183
Hip X-ray, 1 view
An X-ray image of the hip joint taken from a single angle to visualize the bones and surrounding structures.
15 $6 $183
X-ray of both hips, 3-4 views
An X-ray imaging test that captures 3 to 4 views of both hip joints to visualize the bones and surrounding structures.
15 $11 $183
CT scan of abdomen and pelvis with contrast
A CT scan of the abdomen and pelvis using contrast dye before and after administration to visualize internal structures.
15 $78 $1,462
Initial hospital admission, moderate complexity
Initial hospital inpatient or observation care for a new patient involving moderate-level medical decision making, with at least 55 minutes total time on the date of the encounter.
15 $111 $993
MRI of lower spine, without contrast
A magnetic resonance imaging scan of the lower spinal canal that does not use contrast dye to create detailed images of the spine.
14 $56 $664
Wrist X-ray, 2 views
An X-ray imaging test of the wrist using two different angles to visualize the bones and joints.
14 $7 $183
Hip X-ray, 2-3 views
An X-ray imaging test of the hip joint using two to three different angles to visualize the bones and surrounding structures.
14 $20 $166
Abdominal X-ray, 2 views
An X-ray imaging test of the abdomen using two different angles to visualize internal structures.
14 $10 $254
Transrectal ultrasound of the pelvis
An ultrasound imaging procedure where a probe is inserted into the rectum to visualize pelvic structures.
14 $28 $225
Sedation by physician, initial 15 minutes
Administration of a drug to induce depression of consciousness by the physician performing a procedure. This code covers the initial 15 minutes of sedation for patients aged 5 years or older.
14 $10 $183
CT brain blood flow, volume, and timing with contrast
A CT scan that uses contrast dye to analyze blood flow, volume, and timing within the brain.
13 $59 $509
Complete pelvic ultrasound
An imaging test using sound waves to create pictures of the organs and structures within the pelvis.
13 $24 $450
Bone scan with multiple time points
A nuclear medicine imaging test that captures images of the bones at various intervals to assess bone health and detect abnormalities.
13 $41 $452
X-ray of middle spine, 3 views
An X-ray imaging test that captures three different views of the middle section of the spine to evaluate its structure.
12 $9 $183
X-ray of lower and sacral spine, minimum of 4 views
An X-ray imaging test of the lower back and sacrum using at least four different angles to visualize the bones and joints.
12 $8 $183
Whole body bone and joint nuclear medicine scan
A nuclear medicine imaging test that uses a radioactive tracer to create pictures of the entire skeleton and joints. This scan helps evaluate bone health and detect abnormalities throughout the body.
12 $26 $364
Ultrasound of arm and leg arteries
A non-invasive imaging test that uses sound waves to examine the blood vessels in the arms and legs. It evaluates blood flow and checks for blockages or other vascular issues.
12 $16 $501
X-ray of upper spine, 4-5 views
An X-ray imaging test of the upper spine using 4 to 5 different views to visualize the bones and structures in that area.
11 $7 $183
X-ray of sacrum and tailbone, minimum of 2 views
An X-ray imaging test of the sacrum and tailbone using at least two different angles to visualize the bones.
11 $7 $183
How to read this data: This reflects Medicare patients only (typically 65+). Payment amounts are what Medicare paid the provider, not your out-of-pocket cost. A higher procedure volume generally indicates more experience with that procedure.
0.4% high complexity
25.7% medium
73.9% routine

Industry Payment Transparency

Open Payments through 2022 ↗
$3,145
Total received (2018-2022)
Avg $629/year across 5 years
Top 28% in CA for neuroradiology physician
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
20
Companies
66
Individual payments
All payments are legal and publicly reported · Not evidence of wrongdoing · How to interpret →

Payment profile

Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.

Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$3,145 (100.0%)

Payment trend by year

Annual totals from pharmaceutical and medical device companies.

2022
$755
2021
$218
2020
$245
2019
$949
2018
$979

Payments by company (2022)

Consulting
Speaking
Meals & Travel
Research
Boston Scientific Corporation
$510
Penumbra, Inc.
$102
AngioDynamics, Inc.
$94
Medtronic, Inc.
$49
Top 3 companies account for 93.5% of 2022 payments
All-time payments by company (2018-2022) ›
Penumbra, Inc.
$973
Stryker Corporation
$525
Boston Scientific Corporation
$510
DePuy Synthes Sales Inc.
$248
Medtronic USA, Inc.
$217
AngioDynamics, Inc.
$94
Cardiovascular Systems Inc.
$92
Medtronic, Inc.
$83
Sirtex Medical Inc
$69
Imperative Care, Inc
$53
Inari Medical, Inc.
$49
PORTOLA PHARMACEUTICALS, INC.
$44
Cardinal Health 200, LLC
$41
Becton, Dickinson and Company
$30
Bard Access Systems, Inc.
$28
MicroVention, Inc.
$20
GE HEALTHCARE
$20
Biogen, Inc.
$19
EKOS Corporation
$18
PFIZER INC.
$12
Top 3 companies account for 63.8% of all-time payments
Associated products mentioned in payments ›
3D Revascularization · ACE · ANDEXXA · ANGIODYNAMICS · ANGIOGUARD RX Emboli Capture Guidewire System · ATLAS · AXS VECTA · CATALYST · Coronary Orbital Atherectomy System · EKOSONIC · ELIQUIS · EMBOTRAP II Revascularization Device · FLOWGATE · FlowTriever · General - Therapies · Imperative Care Zoom · Indigo System · KYPHON Balloon Kyphoplasty · OSTEOCOOL RF ABLATION · POD · PULSERIDER · Penumbra Jet 7 · Penumbra System · Peripheral Orbital Atherectomy System · React · SIR-Spheres Microspheres · SPECTRA GALAXY G3 MIN · SPINRAZA · SURPASS EVOLVE · Scepter XC Balloon Catheter · Solitaire · TARGET · TREVO · VENASEAL · VenaSeal
Should you be concerned? Payments from pharmaceutical and device companies are legal and common — 57% of U.S. physicians receive at least one. They often reflect legitimate consulting, research, or education. What matters is whether a recommended drug or device appears in your doctor's payment records. If so, consider asking your doctor about it. How to interpret this data →

Most payments (100%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.

Looking for a neuroradiology physician in Monterey Park?
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Geographic Context

Neuroradiology physicians within 10 mi
76
Per 100K population
0.8
County median income
$87,760
Nearest hospital
MONTEREY PARK HOSPITAL
0.0 mi

Data Sources

Provider Registry NPPES Weekly updates
Medicare Enrollment PECOS Monthly updates
Practice Data Medicare Util. Annual (CY lag)
Industry Payments Open Payments CY 2022
Disciplinary History — Not public N/A

This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →

Summary

Dr. Tan is a mixed practice specialist, with above-average Medicare volume (top 8% in CA), with low-engagement industry engagement, with 18 years of NPI registration.

This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →

Frequently Asked Questions

Is Dr. Tan experienced with chest x-ray, 1 view?
Based on Medicare claims data, Dr. Tan performed 14,245 chest x-ray, 1 view services. Research suggests that higher procedure volume is often associated with better outcomes, particularly for complex procedures. Note that Medicare data only captures patients aged 65 and older, so the total practice volume across all patients is likely higher.
Does Dr. Tan receive payments from pharmaceutical companies?
Yes. Dr. Tan received a total of $3,145 from 20 companies across 66 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common among physicians — 57% of all U.S. physicians receive at least one industry payment. Patients may wish to ask their doctor about these relationships, especially if a recommended drug or device appears in the payment records.
How do Dr. Tan's costs compare to other neuroradiology physicians in Monterey Park?
Dr. Tan's average Medicare payment per service is $15. Note that these figures represent what Medicare pays, not your out-of-pocket cost, which depends on your specific insurance plan and deductible. Procedure-level data above shows both what was submitted and what Medicare paid for each service type.
What does Data Coverage mean?
Data Coverage (currently Very High for Dr. Tan) measures how much public federal data is available about a provider. It is not a quality rating. A "Very High" or "High" level means the provider has data across multiple federal sources (NPPES, PECOS, Medicare Utilization, Open Payments), indicating a long track record of practice, Medicare participation, and industry disclosure. A "Low" or "Moderate" level may simply mean the provider is newer, does not see Medicare patients, or has not received any industry payments — none of which are inherently negative. Read our full methodology →
Is this data up to date?
Each data source has its own update cycle. Provider registry data (NPPES) is updated weekly. Medicare enrollment (PECOS) is updated monthly. Medicare practice data has a ~2 year lag — the most recent available is typically 2 years prior. Industry payment data (Open Payments) is published annually, usually in June, covering the prior calendar year. We display the data date prominently on each section so you always know how current it is. See our data freshness policy →
About this page

All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.

This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.

Provider corrections: Provider portal · Privacy questions: Privacy Policy · Terms: Terms of Use · Methodology: Methodology

Data Disclaimer — Data sourced from the Centers for Medicare & Medicaid Services (CMS): National Plan and Provider Enumeration System (NPPES), Open Payments program, Medicare Provider Utilization and Payment Data, and Provider Enrollment & Certification data (PECOS). Published under the Freedom of Information Act (FOIA). This website is not affiliated with, endorsed by, or authorized by CMS, HHS, or the U.S. Government. Data may contain errors as reported to CMS by providers and reporting entities. Payments from industry are legal and do not indicate wrongdoing. Medicare data reflects only patients aged 65+ or those with qualifying disabilities. For corrections, contact CMS directly. This information does not constitute medical advice and should not be used as the sole basis for choosing a healthcare provider. Procedure descriptions use plain language and do not reference CPT® codes, which are copyrighted by the American Medical Association. Full methodology → · Report a data error → · Privacy policy →