Medicare Enrolled
Dr. Aaron Jeng, MD, MPH
Internal Medicine · San Gabriel, CA
Practice pattern: Mixed Practice
— Diverse clinical practice across multiple procedure types
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. Jeng 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. Jeng
Dr. Aaron Jeng is an internal medicine specialist in San Gabriel, CA, with 17 years of NPI registration. Based on federal Medicare data, Dr. Jeng performed 49,752 Medicare services across 1,829 unique beneficiaries.
Between the years covered by Open Payments, Dr. Jeng received a total of $3,065 from 25 pharmaceutical and/or device companies across 78 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in internal medicine. 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. Jeng 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.
✓ 17 years in practice
▲ Top 0% volume in CA
$3,065 industry payments
Medicare Practice Summary
Medicare Utilization ↗49,752
Medicare services
Top 0% in CA for internal medicine
1,829
Unique beneficiaries
$868
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~2,927 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 |
|---|---|---|---|
| Carepatch application, per square centimeter Application of a therapeutic patch to the skin, measured by area in square centimeters. |
21,153 | $986 | $1,300 |
| Barrera barrier treatment, per square centimeter Application of a Barrera barrier to the skin, measured by each square centimeter of treated area. |
11,035 | $1,215 | $1,550 |
| Membrane graft or wrap, per square centimeter Application of a membrane graft or wrap to a surgical site, measured by each square centimeter of area covered. |
7,231 | $1,163 | $1,499 |
| Allergy immunotherapy preparation A professional service involving the preparation and administration of one or more antigens. |
3,590 | $14 | $45 |
| Allergy skin test A diagnostic test performed to identify specific allergies by applying or introducing allergenic extracts to the body. The procedure measures the patient's immune response to various potential allergens. |
1,728 | $3 | $15 |
| 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. |
1,175 | $99 | $225 |
| Skin substitute graft, additional 25 sq cm Application of a skin substitute graft to an additional 25 square centimeters of a wound on the trunk, arms, or legs. |
504 | $21 | $76 |
| Skin substitute graft application, 25 sq cm or less Application of a skin substitute graft to a wound on the trunk, arms, or legs covering 25 square centimeters or less. |
441 | $128 | $377 |
| Home visit, established patient, moderate complexity A home visit for an established patient involving moderate medical decision making. The visit requires at least 40 minutes of time if time is used to determine the level of service. |
419 | $108 | $320 |
| 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. |
306 | $70 | $180 |
| Skin substitute graft application, 25 sq cm or less Application of a skin substitute graft to a wound on the face, scalp, eyelids, mouth, neck, ears, around eyes, genitals, hands, feet, fingers, or toes. The wound area covered is 25.0 square centimeters or less. |
224 | $140 | $412 |
| 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. |
220 | $145 | $400 |
| Hospital discharge day management, 30 minutes or less This service covers the final day of hospital care when the patient is being discharged. It includes coordination of care and instructions for the patient within a time frame of 30 minutes or less. |
204 | $67 | $336 |
| Wound tissue removal, 20 sq cm or less This procedure involves the removal of tissue from a wound area measuring 20 square centimeters or less. |
190 | $91 | $250 |
| Nursing facility visit, moderate complexity A follow-up visit by a healthcare provider at a nursing facility for an established patient. The visit involves moderate medical decision making and takes at least 30 minutes. |
183 | $84 | $225 |
| Additional skin substitute graft, 25 sq cm Application of an additional 25 square centimeters of skin substitute graft to a wound, when the total wound area is 100 square centimeters or less. |
155 | $28 | $85 |
| 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. |
144 | $104 | $250 |
| Skin and tissue removal, 20 sq cm or less This procedure involves the surgical excision of skin and underlying tissue from an area measuring 20 square centimeters or smaller. |
110 | $116 | $320 |
| Wound tissue removal, each additional 20 sq cm This procedure involves the removal of tissue from a wound. It is billed for each additional 20 square centimeters of tissue removed beyond the initial amount. |
106 | $40 | $110 |
| Home visit, established patient, low complexity A physician visits an existing patient at their residence to provide care involving a low level of medical decision making. The visit lasts at least 30 minutes. |
100 | $64 | $260 |
| Additional skin and tissue removal, per 20 sq cm This code covers the removal of skin and tissue for each additional 20 square centimeters or less beyond the initial procedure. |
95 | $35 | $100 |
| Intravenous hydration infusion, 31-60 minutes Administration of fluids into a vein to maintain hydration. This procedure involves an infusion lasting between 31 and 60 minutes. |
59 | $29 | $65 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
54 | $8 | $15 |
| Additional hour of intravenous hydration This code represents each additional hour of intravenous fluid administration beyond the initial hour. It is used to bill for extended hydration therapy. |
52 | $12 | $33 |
| Home visit, new patient, moderate complexity A home visit for a new patient involving moderate medical decision making, lasting at least 60 minutes. |
47 | $119 | $360 |
| Initial nursing facility care, high complexity An initial visit by a healthcare provider to a patient in a nursing facility involving a high level of medical decision making, lasting at least 45 minutes. |
40 | $150 | $420 |
| New patient office visit, complex (60-74 min) | 38 | $183 | $321 |
| 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. |
34 | $28 | $135 |
| Home health agency supervision, complex multidisciplinary care Supervision by a physician or allowed practitioner for a patient receiving Medicare-covered services from a participating home health agency. This involves complex and multidisciplinary care modalities, with the patient not present during the supervision. |
34 | $81 | $440 |
| 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. |
25 | $40 | $345 |
| 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. |
18 | $12 | $75 |
| 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. |
13 | $13 | $75 |
| Annual wellness visit, initial visit A yearly appointment to review your health and create a personalized prevention plan. This initial visit focuses on preventive care and health assessment. |
13 | $178 | $350 |
| 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. |
12 | $135 | $300 |
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.
0.1% high complexity
0.0% medium
99.8% routine
Industry Payment Transparency
Open Payments through 2024 ↗$3,065
Total received (2018-2024)
Avg $438/year across 7 years
Top 21% in CA for internal medicine
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
25
Companies
78
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
$3,065 (100.0%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$330
2023
$578
2022
$584
2021
$420
2020
$77
2019
$612
2018
$463
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Organogenesis Inc.
$50
Gilead Sciences, Inc.
$46
Lilly USA, LLC
$43
PFIZER INC.
$39
Krystal Biotech Inc
$32
Amgen Inc.
$32
ABBVIE INC.
$27
IRONWOOD PHARMACEUTICALS, INC
$22
Exact Sciences Corporation
$21
SANOFI-AVENTIS U.S. LLC
$17
Top 3 companies account for 42.4% of 2024 payments
All-time payments by company (2018-2024) ›
Abbott Laboratories
$463
Merz North America, Inc.
$448
Lilly USA, LLC
$291
Gilead Sciences, Inc.
$248
Galderma Laboratories, L.P.
$216
PFIZER INC.
$178
MERZ NORTH AMERICA, INC.
$153
Teva Pharmaceuticals USA, Inc.
$130
AbbVie, Inc.
$125
BOSTON SCIENTIFIC CORPORATION
$117
Boston Scientific Corporation
$115
ABBVIE INC.
$114
Exact Sciences Corporation
$114
ITI, Inc.
$59
Organogenesis Inc.
$50
Krystal Biotech Inc
$32
Amgen Inc.
$32
GlaxoSmithKline, LLC.
$30
Boehringer Ingelheim Pharmaceuticals, Inc.
$25
SANOFI PASTEUR INC.
$24
Eisai Inc.
$23
Sunovion Pharmaceuticals Inc.
$22
IRONWOOD PHARMACEUTICALS, INC
$22
SANOFI-AVENTIS U.S. LLC
$17
Hologic, LLC
$17
Top 3 companies account for 39.2% of all-time payments
Associated products mentioned in payments ›
APTIOM · AUSTEDO · Asahi Fielder coronary guide wire · Austedo XR · CAPLYTA · COLOGUARD DNA CAPTURE REAGENTS · Cologuard Collection Kit · Dayvigo · Dragonfly OCT · ELIQUIS · FLUZONE HIGH-DOSE · GENERAL PAIN MANAGEMENT · GENERAL THERAPIES · Linzess · MOUNJARO · Otezla · PAXLOVID · Perclose ProGlide suture mediated closure system · QULIPTA · SHINGRIX · STIOLTO RESPIMAT · THINPREP 2000 PROCESSOR · TRELEGY ELLIPTA · TRULICITY · TZIELD · UBRELVY · VYJUVEK · Veklury · XEOMIN · Xience V coronary stent system · ZEPBOUND
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
Internal medicine physicians within 10 mi
5,489
Per 100K population
55.7
County median income
$87,760
Nearest hospital
SAN GABRIEL VALLEY MEDICAL CENTER
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. Jeng is a mixed practice specialist, with above-average Medicare volume (top 0% in CA), with low-engagement industry engagement, with 17 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. Jeng experienced with carepatch application, per square centimeter?
Based on Medicare claims data, Dr. Jeng performed 21,153 carepatch application, per square centimeter 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. Jeng receive payments from pharmaceutical companies?
Yes. Dr. Jeng received a total of $3,065 from 25 companies across 78 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. Jeng's costs compare to other internal medicine physicians in San Gabriel?
Dr. Jeng's average Medicare payment per service is $868. 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. Jeng) 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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