Aaron Jeng, MD, MPH
NPI 1003053851 · Internal Medicine Physician · San Gabriel, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Aaron Jeng, MD, MPH is a Internal Medicine Physician provider in San Gabriel, CA (NPI 1003053851).
Provider details
- NPI number
- 1003053851
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, MPH
- Sex
- Male
- Sole proprietor
- Yes
- License
- A106414 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
17 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
15,361 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Application of Skin Substitute Graft to Wound of Trunk, Arms, Or Legs, 25.0 Sq Cm Or Less of Wound 100.0 Sq Cm Or Less15271 | 2,572 | $157 |
| Removal of Skin and Tissue, 20.0 Sq Cm Or Less11042 | 2,417 | $139 |
| Residence Visit for Established Patient With Low Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99348 | 2,239 | $77 |
| Esano Aca, Per Square CentimeterQ4275 | 1,879 | $2,604 |
| Removal of Skin and Tissue, Each Additional 20.0 Sq Cm Or Less11045 | 1,697 | $41 |
| Application of Skin Substitute Graft to Wound of Trunk, Arms, Or Legs, Each Additional 25.0 Sq Cm of Wound 100.0 Sq Cm Or Less15272 | 1,651 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 149 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 601 | 154 |
| Atorvastatin Calcium | 560 | 128 |
| Levothyroxine Sodium | 349 | 93 |
| Losartan Potassium | 281 | 79 |
| Tamsulosin Hcl | 254 | 61 |
| Metformin Hcl | 209 | 61 |
| Gabapentin |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$330 across 13 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-01-15
- Last updated
- 2015-08-05
Frequently asked questions
- What is Aaron Jeng's NPI number?
- Aaron Jeng's National Provider Identifier (NPI) is 1003053851, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Aaron Jeng's specialty?
- Aaron Jeng is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Aaron Jeng located?
- Aaron Jeng's practice location on file with NPPES is 438 W Las Tunas Dr, San Gabriel, CA 91776-1216.
- What is Aaron Jeng's phone number?
- The practice phone number listed in the NPPES registry for Aaron Jeng is (626) 289-5454.
- Does Aaron Jeng accept Medicare?
- Aaron Jeng is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Aaron Jeng's NPI active?
- Yes — Aaron Jeng's NPI (1003053851) is active in the NPPES registry as of the last update on 2015-08-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.