Aaron I-Lun Jeng, MD, MPH
Internal Medicine Physician · San Gabriel, CA
Aaron I-Lun Jeng, MD, MPH is an internal medicine physician with a practice address in San Gabriel, California, and NPI 1003053851, issued on Jan 15, 2009. Check the license (California A106414, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Aaron I-Lun Jeng
- Credential
- MD, MPH
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A106414 CA
Self-reported in NPPES; status is on the state search - Practice location
- 438 W Las Tunas Dr, San Gabriel, CA 91776
- Phone
- (626) 289-5454
- Enumerated
- Jan 15, 2009
- Record last updated
- Aug 5, 2015 (not updated in 11 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20101118000647); accepts Medicare assignment
- Medical or professional school
- University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb), 2007
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 438 W Las Tunas Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Julie Barron, M.S., P.A.-C.Medical Physician Assistant1366844318
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- Walter Bukata, M.D.Emergency Medicine Physician1174561492
- Jennifer Chan, PAPhysician Assistant1053840272
- He Chang, M.D.Anesthesiology Physician1962416164
Verify Aaron I-Lun Jeng in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A106414Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.8 times the Medicare Part D claims of the average internal medicine physician in 2024
8,936 Medicare Part D claims for 763 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 188 claims were for opioids.
Most prescribed
- Amlodipine Besylate601 claims
- Atorvastatin Calcium560 claims
- Levothyroxine Sodium349 claims
- Losartan Potassium281 claims
- Tamsulosin Hcl254 claims
- Metformin Hcl209 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 12.8 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $330.16
13 payments; by number, the most common kind was food and beverage; the largest payer was Organogenesis Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- LA Canada Medical Group IncLa Canada Flintridge, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Aaron I-Lun Jeng among 17,696 internal medicine physician records in California
Aaron I-Lun Jeng, MD, MPH is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 60% of them.
- NPI issued2009 · 60% of these records are older, 37% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2007 · median 2004 among the 11,065 with a school on file
- Record last updated2015 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
24 internal medicine physician records list a practice address in San Gabriel
They are 24 of the 762 NPPES records with a practice address in San Gabriel, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in San Gabriel → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Kenneth Chan, M.D.San Gabriel, CA 917761861422370
- Michelle Chan, M.D.San Gabriel, CA 917761043326283
- Araceli Chanbonpin, M.D.San Gabriel, CA 917761962572909
- Jennifer Chen, MDSan Gabriel, CA 917761548335516
- Le-Young Lee, MDSan Gabriel, CA 917761861417586
- Su Lee, M.D.San Gabriel, CA 917761871510370
- Charles Lin, MDSan Gabriel, CA 917761982719225
- Garry Pratt, MDSan Gabriel, CA 917761679592281
Common questions
What is Aaron I-Lun Jeng, MD, MPH's NPI number?
Aaron I-Lun Jeng, MD, MPH's National Provider Identifier (NPI) is 1003053851, issued on Jan 15, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Aaron I-Lun Jeng, MD, MPH located?
The NPPES record lists a practice address at 438 W Las Tunas Dr, San Gabriel, CA, 91776. Phone: (626) 289-5454. Providers update this record themselves, so call before visiting.
How can I verify Aaron I-Lun Jeng, MD, MPH's license?
NPPES lists California license number A106414, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Aaron I-Lun Jeng, MD, MPH prescribe under Medicare Part D?
In 2024, Aaron I-Lun Jeng, MD, MPH had 8,936 Medicare Part D claims for 763 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Aaron I-Lun Jeng, MD, MPH's MIPS final score?
The 2023 MIPS final score is 12.8 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.