Medicare Enrolled
Dr. Stephen Chen, MD
Internal Medicine · Monterey Park, CA
Practice pattern: Clinical Cardiology
— Primarily office-based clinical cardiology
Speaking/Promotional
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. Chen 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. Chen
Dr. Stephen Chen is an internal medicine specialist in Monterey Park, CA, with 20 years of NPI registration. Based on federal Medicare data, Dr. Chen performed 5,500 Medicare services across 2,234 unique beneficiaries.
Between the years covered by Open Payments, Dr. Chen received a total of $376,080 from 49 pharmaceutical and/or device companies across 899 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in internal medicine. The majority of payments are for speaking programs and promotional activities, reflecting participation in industry-sponsored events. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Chen 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.
✓ 20 years in practice
▲ Top 5% volume in CA
$376,080 industry payments
Medicare Practice Summary
Medicare Utilization ↗5,500
Medicare services
Top 5% in CA for internal medicine
2,234
Unique beneficiaries
$119
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~275 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 |
|---|---|---|---|
| Hospital follow-up visit, high complexity Subsequent hospital inpatient or observation care for an existing patient involving high-level medical decision making, with at least 50 minutes total time on the date of the encounter. |
2,640 | $100 | $283 |
| Critical care, first 30-74 min Emergency medical care for a critically ill or injured patient lasting between 30 and 74 minutes. This service involves direct patient care and medical decision making to stabilize the patient. |
1,167 | $177 | $598 |
| Office visit, established patient, complex (40-54 min) An office or outpatient visit for an existing patient lasting between 40 and 54 minutes. This level of service is determined by the total time spent on the date of the encounter. |
531 | $146 | $403 |
| Office visit, established patient (30-39 min) A follow-up office visit for an existing patient lasting between 30 and 39 minutes. The visit involves medical evaluation and management of the patient's condition. |
338 | $103 | $302 |
| Initial hospital admission, high complexity Initial hospital inpatient or observation care for a new patient involving high-level medical decision making, with at least 75 minutes total time on the date of the encounter. |
156 | $144 | $548 |
| Hospital follow-up visit, moderate complexity Follow-up hospital visit for an existing patient involving moderate medical decision making. The visit requires at least 35 minutes of time spent on the date of service. |
75 | $66 | $195 |
| Spirometry test before and after medication A test that measures the amount of air you can exhale and the speed of your breathing before and after taking a medication. |
72 | $34 | $248 |
| Lung volume test using gas dilution or washout A test that measures the amount of air in your lungs by using a gas dilution or washout method. |
72 | $39 | $129 |
| Pulmonary gas exchange test A test to examine how well the lungs exchange gases. |
72 | $51 | $139 |
| Home health plan of care certification Certification by a physician or allowed practitioner for Medicare-covered home health services under a home health plan of care. This includes contacting the home health agency and reviewing reports of patient status required by physicians. |
62 | $46 | $130 |
| New patient office visit, complex (60-74 min) | 43 | $178 | $568 |
| Telephone medical discussion, 21-30 minutes A telephone conversation with a physician lasting between 21 and 30 minutes. This code covers the time spent discussing medical matters over the phone. |
42 | $110 | $183 |
| Insertion of non-tunneled central venous catheter A procedure to place a central venous catheter for infusion in patients aged 5 years or older. The catheter is inserted directly into a large vein without being tunneled under the skin. |
40 | $69 | $230 |
| 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. |
31 | $12 | $48 |
| Additional 30 minutes of critical care This code represents an additional 30 minutes of critical care services provided beyond the initial critical care time period. |
27 | $89 | $300 |
| Chest fluid aspiration with imaging guidance This procedure involves removing fluid from the chest cavity using imaging technology to guide the needle placement. |
22 | $90 | $306 |
| Bronchial secretion aspiration via endoscope Removal of initial lung airway secretions using an endoscope. This procedure involves inserting a scope into the airways to clear fluid or mucus. |
20 | $115 | $405 |
| New patient office visit (45-59 min) An initial office visit for a new patient lasting between 45 and 59 minutes. This code covers the total time spent by the physician or qualified healthcare professional on the date of the encounter. |
20 | $131 | $453 |
| Flu vaccine administration This procedure involves the administration of the influenza virus vaccine. It covers the process of delivering the vaccine to the patient. |
17 | $33 | $35 |
| Nursing facility visit, high complexity A follow-up visit by a healthcare provider at a nursing facility for an established patient. The visit involves a high level of medical decision making and takes at least 45 minutes. |
16 | $130 | $370 |
| Influenza vaccine, quadrivalent, 0.5 ml dosage | 14 | $20 | $75 |
| Emergent tracheostomy An emergency procedure to create an opening in the windpipe to insert a breathing tube, guided by an endoscope. |
12 | $115 | $380 |
| Transitional care management, high complexity Coordination of care for a patient transitioning from a short-term hospital stay or other facility to home or another care setting. This service addresses a high-complexity medical problem. |
11 | $241 | $650 |
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.
0.7% high complexity
1.0% medium
98.3% routine
Industry Payment Transparency
Open Payments through 2024 ↗$376,080
Total received (2018-2024)
Avg $53,726/year across 7 years
Top 1% in CA for internal medicine
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
49
Companies
899
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.
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$360,426 (95.8%)
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$9,094 (2.4%)
Consulting
Expert advisory fees, typically reflecting recognized clinical expertise
$6,560 (1.7%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$59,271
2023
$89,212
2022
$83,553
2021
$32,970
2020
$21,406
2019
$34,996
2018
$54,672
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
GlaxoSmithKline, LLC.
$29,577
AstraZeneca Pharmaceuticals LP
$27,302
Bayer Healthcare Pharmaceuticals Inc.
$928
ABBVIE INC.
$239
Boehringer Ingelheim Pharmaceuticals, Inc.
$234
Merck Sharp & Dohme LLC
$192
Actelion Pharmaceuticals US, Inc.
$174
ABIOMED
$125
Mylan Specialty L.P.
$110
United Therapeutics Corporation
$82
GENZYME CORPORATION
$77
Regeneron Healthcare Solutions, Inc.
$45
Paratek Pharmaceuticals, Inc.
$34
Shionogi Inc
$32
Insmed, Inc.
$27
Philips North America LLC
$25
Novo Nordisk Inc
$24
Lilly USA, LLC
$24
Amgen Inc.
$21
Top 3 companies account for 97.5% of 2024 payments
All-time payments by company (2018-2024) ›
GlaxoSmithKline, LLC.
$202,417
AstraZeneca Pharmaceuticals LP
$59,071
Boehringer Ingelheim Pharmaceuticals, Inc.
$49,204
Bayer HealthCare Pharmaceuticals Inc.
$20,073
AbbVie, Inc.
$12,889
Mylan Specialty L.P.
$12,436
Allergan Inc.
$6,227
Sunovion Pharmaceuticals Inc.
$3,467
AbbVie Inc.
$2,378
Bayer Healthcare Pharmaceuticals Inc.
$1,142
Actelion Pharmaceuticals US, Inc.
$951
Genentech USA, Inc.
$903
ABBVIE INC.
$496
Merck Sharp & Dohme LLC
$417
Regeneron Healthcare Solutions, Inc.
$344
Merck Sharp & Dohme Corporation
$305
United Therapeutics Corporation
$286
GENZYME CORPORATION
$281
Otsuka America Pharmaceutical, Inc.
$234
Amgen Inc.
$225
Harmony Biosciences LLC
$224
Pulmonx Corporation
$216
Insmed, Inc.
$189
E.R. Squibb & Sons, L.L.C.
$167
Tepha Inc
$163
Intuitive Surgical, Inc.
$132
Electromed, Inc.
$132
ABIOMED
$125
Boston Scientific Corporation
$121
HARMONY BIOSCIENCES LLC
$119
Advanced Respiratory, Inc
$106
Novo Nordisk Inc
$92
Gilead Sciences, Inc.
$76
Shionogi Inc
$62
Allergan, Inc.
$55
Lilly USA, LLC
$42
PFIZER INC.
$42
Paratek Pharmaceuticals, Inc.
$34
Melinta Therapeutics, Inc.
$30
Radius Health, Inc.
$28
Vanda Pharmaceuticals Inc.
$25
Philips North America LLC
$25
Mallinckrodt Enterprises LLC
$24
UCB, Inc.
$21
Philips Electronics North America Corporation
$19
Janssen Pharmaceuticals, Inc
$18
IDORSIA PHARMACEUTICALS US INC
$17
Baxter Healthcare
$14
Circassia Pharmaceuticals Inc
$11
Top 3 companies account for 82.6% of all-time payments
Associated products mentioned in payments ›
(7999) SRC Undivided · (AK6) Vest Therapy · ACTHAR · AIRSUPRA · ANDEXXA · ANORO · ANORO ELLIPTA · APTIOM · AREXVY · ASMANEX · AVYCAZ · Adempas · Aimovig · Arikayce · BELSOMRA · BEVESPI AEROSPHERE · BREO · BREO ELLIPTA · BREZTRI · BREZTRI AEROSPHERE · Baxdela · CHARTIS CATHETER · CRE · Creon · DALVANCE · DIFICID · DUAKLIR PRESSAIR · DUPIXENT · Da Vinci Surgical System · ELIQUIS · EVENITY · Esbriet · FASENRA · Fetroja · GalaFLEX · Hetlioz · Hillrom - Vest System Model 105 Home Care · Impella · JARDIANCE · JYNARQUE · LOKELMA · LONHALA MAGNAIR · NUCALA · NUZYRA · Neupro · OFEV · OPSUMIT · OPSUMIT MACITENTAN · ORENITRAM · Ozempic · PNEUMOVAX 23 · Pulmonx Endobronchial Valve EBV · QULIPTA · QUVIVIQ · REMODULIN · Rybelsus · SAMSCA · SEEBRI · SMARTVEST · SPIRIVA · SPIRIVA RESPIMAT · STIOLTO RESPIMAT · SYMBICORT · TEFLARO · TEZSPIRE · TRELEGY ELLIPTA · TYVASO · The Vest System Model 105 Home Care · Tymlos · UPTRAVI · Utibron · Veklury · WAKIX · WINREVAIR · Wakix · XARELTO · Xolair · YUPELRI · Yupelri · ZERBAXA
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 →
The majority of payments (96%) are for speaking programs and promotional activities, which reflect participation in industry-sponsored educational or marketing events. This is common in internal medicine and does not inherently indicate bias, but patients may wish to be aware. Total industry engagement is in the top 1% for internal medicine in CA.
Geographic Context
Internal medicine physicians within 10 mi
5,597
Per 100K population
56.8
County median income
$87,760
Nearest hospital
MONTEREY PARK 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. Chen is a clinical cardiology specialist, with above-average Medicare volume (top 5% in CA), with speaking/promotional industry engagement in the top 1% of CA peers, with 20 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. Chen experienced with hospital follow-up visit, high complexity?
Based on Medicare claims data, Dr. Chen performed 2,640 hospital follow-up visit, high complexity 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. Chen receive payments from pharmaceutical companies?
Yes. Dr. Chen received a total of $376,080 from 49 companies across 899 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. Chen's costs compare to other internal medicine physicians in Monterey Park?
Dr. Chen's average Medicare payment per service is $119. 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. Chen) 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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