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Compare the published Medicare service mix of Paul Leitner, MD with clinicians in the same registry specialty: Internal Medicine (CMS).

LOS ANGELES, CA · Exact areaEdit location

2024 published service data · 35 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Michael Y Karapetian, M.D.

Internal Medicine (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more (99308)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Telephone medical discussion with physician, 5-10 minutes (99441)
57%Service-mix similarityView profile →

Arman Hekmati, M.D.

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

Shared published services
3 shared services · view billing descriptions
  • Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more (99308)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Telephone medical discussion with physician, 11-20 minutes (99442)
50%Service-mix similarityView profile →

Erwinn Martin C Sistoza, M.D.

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

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Insertion of needle into vein for collection of blood sample (36415)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
50%Service-mix similarityView profile →

Nouneh O. Danielyan, M.D.

Internal Medicine (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Telephone medical discussion with physician, 5-10 minutes (99441)
  • Telephone medical discussion with physician, 11-20 minutes (99442)
46%Service-mix similarityView profile →

Susan D. Leonard, M.D.

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

Shared published services
3 shared services · view billing descriptions
  • Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more (99308)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes (99309)
42%Service-mix similarityView profile →

Marcel S Filart, MD

Specialty details in registry · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more (99308)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
42%Service-mix similarityView profile →

Grace Ingan Chen, M.D.

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

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
41%Service-mix similarityView profile →

Catherine Claire Lindsay, MD

Geriatric Medicine (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Telephone medical discussion with physician, 5-10 minutes (99441)
  • Telephone medical discussion with physician, 11-20 minutes (99442)
40%Service-mix similarityView profile →

Arun S Karlamangla, MD

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

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
39%Service-mix similarityView profile →

Patricia F. Harris, MD

Geriatric Medicine (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
37%Service-mix similarityView profile →

Matthew Clinton Mulroy, MD

Geriatric Medicine (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Telephone medical discussion with physician, 11-20 minutes (99442)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
36%Service-mix similarityView profile →

Seung H Kim, M.D.

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

Shared published services
3 shared services · view billing descriptions
  • Telephone medical discussion with physician, 5-10 minutes (99441)
  • Insertion of needle into vein for collection of blood sample (36415)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
35%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.