HCPList Know more before you call. About
A DIFFERENT WAY TO EXPLORE

Similar work.
More providers to explore.

Compare the published Medicare service mix of Thomas Leo Quirk, MD with clinicians in the same registry specialty: Psychiatry.

SAN FRANCISCO, CA · Exact areaEdit location

2024 published service data · 136 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Richard Feng, M.D.

Psychiatry · San Francisco, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
82%Service-mix similarityView profile →

Jarrell Collin Meier, M.D.

Psychiatry · San Francisco, CA

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
71%Service-mix similarityView profile →

Steven Wozniak, MD

Psychiatry · San Francisco, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
64%Service-mix similarityView profile →

Thao Tran, MD

Psychiatry · San Francisco, CA

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
64%Service-mix similarityView profile →

Chesley C. Herbert, M.D.

Psychiatry · San Francisco, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
58%Service-mix similarityView profile →

Ari U. Etheridge, M.D.

Psychiatry · San Francisco, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
57%Service-mix similarityView profile →

Gene A Nakajima, MD

Psychiatry · San Francisco, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
52%Service-mix similarityView profile →

Kenneth Marcus Chin, D.O.

Psychiatry · San Francisco, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
51%Service-mix similarityView profile →

Ruth U. De Peralta, MD

Psychiatry · San Francisco, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
51%Service-mix similarityView profile →

Jennifer Marie Mcquade, M.D.

Psychiatry · San Francisco, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
44%Service-mix similarityView profile →

Benjamin Bailey Barreras, M.D.

Psychiatry · San Francisco, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
44%Service-mix similarityView profile →

Jennifer Arwen Cummings, M.D.

Psychiatry · San Francisco, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
42%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.