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 Gary Fredric Koloff, MD with clinicians in the same registry specialty: Psychiatry.

FARMINGTON HILLS, MI · Exact areaEdit location

2024 published service data · 14 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Leonard J Rosen, M.D.

Psychiatry · Farmington Hills, MI

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Psychotherapy with evaluation and management visit, 45 minutes (90836)
69%Service-mix similarityView profile →

Alexander Hanmah Sackeyfio, M.D.

Psychiatry · Farmington Hills, MI

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Psychotherapy with evaluation and management visit, 30 minutes (90833)
65%Service-mix similarityView profile →

Charles B. Goss, D.O.

Psychiatry · Farmington Hills, MI

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
64%Service-mix similarityView profile →

Leon Rubenfaer, MD

Psychiatry · Farmington Hills, MI

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
52%Service-mix similarityView profile →

Rhona Beth Ahmad, MD

Psychiatry · Farmington Hills, MI

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
45%Service-mix similarityView profile →

Nigar Yousuf, M.D.

Psychiatry · Farmington Hills, MI

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
40%Service-mix similarityView profile →

Karen Joseph, M.D.

Psychiatry · Farmington Hills, MI

Shared published services
1 shared services · view billing descriptions
  • 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 →

Jimmy Metellus, MD

Psychiatry · Farmington Hills, MI

Shared published services
1 shared services · view billing descriptions
  • Psychotherapy with evaluation and management visit, 30 minutes (90833)
24%Service-mix similarityView profile →

Manzar Yousuf Rajput, MD

Psychiatry · Farmington Hills, MI

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
20%Service-mix similarityView profile →

Timothy L Chapman, MD

Psychiatry · Farmington Hills, MI

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
20%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.