Medicare Enrolled
Dr. Jaesoo Pak, M.D.
Gastroenterology · Cerritos, CA
Practice pattern: Clinical Cardiology
— Primarily office-based clinical cardiology
Low-engagement
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. Pak 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 →
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What this data tells you about Dr. Pak
Dr. Jaesoo Pak is a gastroenterology specialist in Cerritos, CA, with 19 years of NPI registration. Based on federal Medicare data, Dr. Pak performed 12,072 Medicare services across 5,554 unique beneficiaries.
Between the years covered by Open Payments, Dr. Pak received a total of $19,262 from 52 pharmaceutical and/or device companies across 1166 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in gastroenterology. 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. Pak 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.
✓ 19 years in practice
▲ Top 1% volume in CA
$19,262 industry payments
Medicare Practice Summary
Medicare Utilization ↗12,072
Medicare services
Top 1% in CA for gastroenterology
5,554
Unique beneficiaries
$41
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~635 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 |
|---|---|---|---|
| Chronic care management, first 20 min/month This service covers the first 20 minutes of clinical staff time directed by a healthcare professional each calendar month to manage chronic conditions. |
2,200 | $51 | $90 |
| Ketorolac injection, per 15 mg An injection of ketorolac tromethamine, a nonsteroidal anti-inflammatory drug, administered in doses measured per 15 mg. |
1,435 | $0 | $25 |
| Denosumab injection (Prolia/Xgeva) | 1,140 | $18 | $58 |
| Blood glucose test using hand-held instrument A test that measures the level of sugar in the blood using a portable device. The result helps monitor blood glucose levels. |
851 | $3 | $22 |
| Remote patient monitoring management, 20 min/month Management based on results from remote vital sign monitoring for the first 20 minutes per calendar month. |
826 | $42 | $80 |
| Office visit, established patient (20-29 min) An office visit for an existing patient lasting between 20 and 29 minutes. The visit involves medical evaluation and management of the patient's condition. |
630 | $78 | $120 |
| Hemoglobin blood test A blood test that measures the amount of hemoglobin, the protein in red blood cells that carries oxygen. |
470 | $2 | $44 |
| Electrocardiogram (EKG), 12-lead A standard heart rhythm test using at least 12 leads to record electrical activity. A healthcare provider interprets the results and provides a written report. |
417 | $13 | $100 |
| Remote patient monitoring device, 30 days Initial setup of devices for remote monitoring of body functions with daily data transmission or alerts. This service covers the first 30 days of the monitoring period. |
398 | $45 | $79 |
| Upper GI endoscopy with biopsy A procedure to collect tissue samples from the esophagus, stomach, or upper small intestine using a flexible tube with a camera. The samples are examined to check for abnormalities. |
368 | $15 | $1,100 |
| Upper endoscopy with biopsy A procedure using a flexible tube to examine the esophagus, stomach, and upper small intestine, during which tissue samples are collected for microscopic analysis. |
362 | $135 | $1,104 |
| Office visit, established patient (10-19 min) An office visit for an existing patient lasting 10 to 19 minutes. The visit involves medical evaluation and management of the patient's condition. |
325 | $49 | $70 |
| 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. |
305 | $31 | $180 |
| Intravenous drug injection A procedure involving the administration of a medication or substance directly into a vein. |
289 | $34 | $120 |
| Remote vital sign monitoring management, each additional 20 minutes This code covers the time spent by a provider managing patient data from remote vital sign monitoring devices. It applies to each additional 20-minute increment beyond the initial monthly service period. |
221 | $34 | $80 |
| Drug injection, under skin or into muscle A procedure involving the administration of a medication or substance via injection into the subcutaneous tissue or muscle. |
175 | $12 | $60 |
| Complete ultrasound of abdomen A diagnostic imaging test that uses sound waves to create detailed pictures of the organs and structures within the abdomen. |
174 | $107 | $300 |
| 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. |
171 | $102 | $300 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
165 | $8 | $20 |
| 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. |
163 | $175 | $250 |
| Echocardiogram, transthoracic An ultrasound of the heart that uses color to show blood flow, rate, direction, and valve function. |
158 | $178 | $750 |
| Complete pelvic ultrasound An imaging test using sound waves to create pictures of the organs and structures within the pelvis. |
92 | $69 | $300 |
| Annual intensive behavioral therapy for cardiovascular disease, 15 minutes A yearly, in-person session focused on intensive behavioral therapy to help manage cardiovascular disease. The session lasts for 15 minutes and is conducted with the patient individually. |
75 | $28 | $60 |
| Advance care planning consultation, first 30 min A session focused on discussing and documenting future healthcare preferences and goals. This service covers the initial 30 minutes of the planning discussion. |
73 | $86 | $150 |
| Annual alcohol misuse screening, 5 to 15 minutes | 72 | $21 | $40 |
| Annual depression screening | 72 | $21 | $40 |
| Remote physiologic monitoring setup and education Initial setup of remote monitoring equipment and patient education on its use. |
71 | $18 | $40 |
| Annual wellness visit, follow-up A follow-up annual wellness visit that includes a personalized prevention plan of service. |
69 | $140 | $200 |
| Transrectal ultrasound of the pelvis An ultrasound imaging procedure where a probe is inserted into the rectum to visualize pelvic structures. |
66 | $126 | $300 |
| Methylprednisolone injection, up to 40 mg An injection of methylprednisolone sodium succinate, a corticosteroid medication, administered in a dose of up to 40 mg. |
56 | $3 | $20 |
| Non-hormonal chemotherapy injection This procedure involves administering non-hormonal anti-neoplastic chemotherapy medication via injection into the skin or muscle tissue. |
48 | $67 | $250 |
| New patient office visit (30-44 min) An initial office visit for a new patient lasting between 30 and 44 minutes. This code is used when the total time spent on the date of the encounter falls within this range. |
45 | $97 | $170 |
| Colon polyp removal with endoscopic snare This procedure removes polyps or growths from the large bowel using a flexible tube with a camera and a wire loop tool. The snare is used to cut off the growths during the examination. |
32 | $211 | $1,400 |
| Colon polyp removal with endoscope and cautery This procedure removes polyps or growths from the large bowel using a flexible tube with a camera. Electrical cautery is used to stop bleeding during the removal. |
24 | $187 | $1,400 |
| Colonoscopy A diagnostic exam of the large bowel using a flexible endoscope to visualize the interior of the colon. |
20 | $142 | $1,200 |
| Urinalysis, manual A manual laboratory examination of a urine sample to check for various substances and cells. |
14 | $3 | $19 |
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.
1.3% high complexity
37.8% medium
60.9% routine
Industry Payment Transparency
Open Payments through 2024 ↗$19,262
Total received (2018-2024)
Avg $2,752/year across 7 years
Top 12% in CA for gastroenterology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
52
Companies
1,166
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
$19,262 (100.0%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$2,483
2023
$2,124
2022
$2,848
2021
$3,233
2020
$2,419
2019
$2,953
2018
$3,201
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Amgen Inc.
$559
ABBVIE INC.
$280
AstraZeneca Pharmaceuticals LP
$271
Ardelyx, Inc.
$231
Novartis Pharmaceuticals Corporation
$226
Phathom Pharmaceuticals, Inc.
$222
IBSA Pharma Inc.
$186
GlaxoSmithKline, LLC.
$100
Radius Health, Inc.
$95
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$73
SCILEX PHARMACEUTICALS INC.
$53
AIMMUNE THERAPEUTICS, INC.
$45
Gilead Sciences, Inc.
$36
Bayer Healthcare Pharmaceuticals Inc.
$22
VIVUS LLC
$21
Merck Sharp & Dohme LLC
$20
PFIZER INC.
$17
Braintree Laboratories, Inc.
$14
Esperion Therapeutics, Inc.
$14
Top 3 companies account for 44.7% of 2024 payments
All-time payments by company (2018-2024) ›
Amgen Inc.
$4,762
AstraZeneca Pharmaceuticals LP
$1,841
ABBVIE INC.
$1,242
Gilead Sciences, Inc.
$810
Radius Health, Inc.
$781
IBSA Pharma Inc.
$697
Novo Nordisk Inc
$691
Regeneron Healthcare Solutions, Inc.
$664
AbbVie Inc.
$649
Novartis Pharmaceuticals Corporation
$508
Merck Sharp & Dohme Corporation
$485
GlaxoSmithKline, LLC.
$485
RedHill Biopharma Inc.
$458
AbbVie, Inc.
$446
Lilly USA, LLC
$429
SANOFI-AVENTIS U.S. LLC
$427
Nestle HealthCare Nutrition Inc.
$381
Takeda Pharmaceuticals U.S.A., Inc.
$378
Allergan Inc.
$357
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$351
Ardelyx, Inc.
$256
Amarin Pharma Inc.
$249
Phathom Pharmaceuticals, Inc.
$246
Boehringer Ingelheim Pharmaceuticals, Inc.
$222
Bayer HealthCare Pharmaceuticals Inc.
$209
Alvogen Inc
$133
Scilex Pharmaceuticals Inc.
$133
VIVUS LLC
$120
PFIZER INC.
$111
Bayer Healthcare Pharmaceuticals Inc.
$84
Esperion Therapeutics, Inc.
$61
ARBOR PHARMACEUTICALS, INC.
$56
SCILEX PHARMACEUTICALS INC.
$53
NESTLE HEALTHCARE NUTRITION INC.
$47
AIMMUNE THERAPEUTICS, INC.
$45
Corium, LLC
$44
Sunovion Pharmaceuticals Inc.
$43
Allergan, Inc.
$40
Merck Sharp & Dohme LLC
$38
Regeneron Pharmaceuticals, Inc.
$26
Intercept Pharmaceuticals, Inc.
$22
Alnylam Pharmaceuticals Inc.
$21
Alfasigma USA, Inc.
$21
Ironwood Pharmaceuticals, Inc
$20
Horizon Therapeutics plc
$20
IRONWOOD PHARMACEUTICALS, INC
$19
FIDIA PHARMA USA INC.
$15
Seqirus USA Inc
$15
Sanofi Pasteur Inc.
$15
Braintree Laboratories, Inc.
$14
Meridian Bioscience Inc.
$10
Canon Medical Systems USA, Inc.
$9
Top 3 companies account for 40.7% of all-time payments
Associated products mentioned in payments ›
ADLARITY · ADVAIR · AIRSUPRA · ANORO · AREXVY · Adlarity · Aemcolo · Aimovig · Amitiza · BELSOMRA · BEVESPI AEROSPHERE · BREO · BREZTRI · BREZTRI AEROSPHERE · BRILINTA · BYSTOLIC · CREON · Creon · Dexilant · EMGALITY · ENTRESTO · EVENITY · EVKEEZA · Edarbi · FARXIGA · FLUZONE HIGH-DOSE · FORTEO · Fluad · GARDASIL · Hymovis · IBSRELA · JANUVIA · JARDIANCE · Kerendia · LEQVIO · LICART · LINZESS · LONHALA MAGNAIR · LYRICA · Licart · Linzess · MOUNJARO · Movantik · NEXLETOL · ONPATTRO · Otezla · Ozempic · PANCREAZE · PAXLOVID · PENNSAID · PNEUMOVAX 23 · PRALUENT · PRALUENT ALIROCUMAB INJECTION · Pancreaze · Prolia · Qsymia · RYBELSUS · Repatha · Rybelsus · SOLIQUA · STEGLATRO · STIOLTO · STIOLTO RESPIMAT · SUFLAVE · SYMBICORT · TERIPARATIDE · TEZSPIRE · TOVIAZ · TRADJENTA · TRELEGY ELLIPTA · TRULANCE · TRULICITY · Talicia · Tirosint · Trintellix · Tymlos · UBRELVY · VIBERZI · VOQUEZNA · VRAYLAR · Vascepa · Victoza · XIFAXAN · ZENPEP · ZTLido · ZTLido 30 POUCH in 1 CARTON 1 PATCH in 1 POUCH · Zelnorm
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.
Geographic Context
Gastroenterologists within 10 mi
479
Per 100K population
4.9
County median income
$87,760
Nearest hospital
COLLEGE HOSPITAL
0.0 mi
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 2024 |
| 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. Pak is a clinical cardiology specialist, with above-average Medicare volume (top 1% in CA), with low-engagement industry engagement in the top 12% of CA peers, with 19 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. Pak experienced with chronic care management, first 20 min/month?
Based on Medicare claims data, Dr. Pak performed 2,200 chronic care management, first 20 min/month 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. Pak receive payments from pharmaceutical companies?
Yes. Dr. Pak received a total of $19,262 from 52 companies across 1,166 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. Pak's costs compare to other gastroenterologists in Cerritos?
Dr. Pak's average Medicare payment per service is $41. 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. Pak) 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 →
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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.
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