A DIFFERENT WAY TO EXPLORE

Similar work.
More providers to explore.

Compare the published Medicare service mix of Ilsong Jason Chong, M.D. with clinicians in the same registry specialty: Geriatric Medicine · Internal Medicine (CMS).

CA · Exact areaEdit location

2024 published service data · 217 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Merlyn M Asuncion, M.D.

Geriatric Medicine · Internal Medicine (CMS) · Van Nuys, CA

Shared published services
2 shared services · view billing descriptions
  • Hemoglobin a1c level (83036)
  • Insertion of needle into vein for collection of blood sample (36415)
43%Service-mix similarityView profile →

Jose Milton Lara, M.D.

Internal Medicine (CMS) · Bell, CA

Shared published services
1 shared services · view billing descriptions
  • Insertion of needle into vein for collection of blood sample (36415)
40%Service-mix similarityView profile →

John Haile Peters, M.D.

Specialty details in registry · Mather, CA

Shared published services
1 shared services · view billing descriptions
  • Insertion of needle into vein for collection of blood sample (36415)
39%Service-mix similarityView profile →

John Azubike Uyanne, MD

Geriatric Medicine · Internal Medicine (CMS) · Los Angeles, CA

Shared published services
2 shared services · view billing descriptions
  • Hemoglobin a1c level (83036)
  • Insertion of needle into vein for collection of blood sample (36415)
39%Service-mix similarityView profile →

Fareeha Majeed, MD

Geriatric Medicine · Internal Medicine (CMS) · San Francisco, CA

Shared published services
1 shared services · view billing descriptions
  • Insertion of needle into vein for collection of blood sample (36415)
37%Service-mix similarityView profile →

Chien-Wai Chiu, MD

Geriatric Medicine · Internal Medicine (CMS) · San Jose, CA

Shared published services
1 shared services · view billing descriptions
  • Insertion of needle into vein for collection of blood sample (36415)
35%Service-mix similarityView profile →

Chaewon Song, MD

Geriatric Medicine · Internal Medicine (CMS) · Garden Grove, CA

Shared published services
2 shared services · view billing descriptions
  • Hemoglobin a1c level (83036)
  • Insertion of needle into vein for collection of blood sample (36415)
28%Service-mix similarityView profile →

Anush Hasratyan, M.D.

Geriatric Medicine · Internal Medicine (CMS) · Canyon Country, CA

Shared published services
1 shared services · view billing descriptions
  • Insertion of needle into vein for collection of blood sample (36415)
28%Service-mix similarityView profile →

Sonja Louisa Rosen, MD

Geriatric Medicine (CMS) · Beverly Hills, CA

Shared published services
1 shared services · view billing descriptions
  • Insertion of needle into vein for collection of blood sample (36415)
27%Service-mix similarityView profile →

Erwinn Martin C Sistoza, M.D.

Geriatric Medicine · Internal Medicine (CMS) · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • Insertion of needle into vein for collection of blood sample (36415)
27%Service-mix similarityView profile →
How this comparison works

We use the same calendar year of CMS Medicare Physician & Other Practitioners data for both providers. Published non-drug service counts are combined by HCPCS code across places of service. We apply log(1 + count), normalize the vectors, and compare them using cosine similarity.

Candidates share the reference provider’s current NPPES primary taxonomy and match the location you enter. We examine up to 500 candidates in NPI order, then show up to 12 with the highest positive similarity within that set. The score is not a percentile, medical recommendation, or prediction. Suppressed services are not estimated. Medicare fee-for-service data does not describe a provider’s entire practice.

Source: CMS Medicare Physician & Other Practitioners - by Provider and Service : 2024-12-01 · Published May 21, 2026.