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Compare the published Medicare service mix of Fayez Guirguis, MD with clinicians in the same registry specialty: Obstetrics & Gynecology.

BROOKLYN, NY · Exact areaEdit location

2024 published service data · 82 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Kecia Helene Gerlach, MD

Obstetrics & Gynecology · Brooklyn, NY

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)
66%Service-mix similarityView profile →

Dennis Blanchette, MD

Obstetrics & Gynecology · Brooklyn, NY

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)
66%Service-mix similarityView profile →

Erroll I Byer

Obstetrics & Gynecology · Brooklyn, NY

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)
66%Service-mix similarityView profile →

Mauro Ledesma Ruffy, MD

Obstetrics & Gynecology · Brooklyn, NY

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)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
64%Service-mix similarityView profile →

Hayama Brill, M.D.

Obstetrics & Gynecology · Brooklyn, NY

Shared published services
3 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)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
  • Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)
62%Service-mix similarityView profile →

Sharon Berger

Obstetrics & Gynecology · Brooklyn, NY

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)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
61%Service-mix similarityView profile →

Kamila Agayeva, M.D

Obstetrics & Gynecology · Brooklyn, NY

Shared published services
3 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)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
  • Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)
60%Service-mix similarityView profile →

Lincoln English Vandevender Ferguson, D.O.

Obstetrics & Gynecology · Brooklyn, NY

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)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
59%Service-mix similarityView profile →

Gerard Turano, MD

Obstetrics & Gynecology · Brooklyn, NY

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)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
57%Service-mix similarityView profile →

Rubin Frenkel, M.D.

Obstetrics & Gynecology · Brooklyn, NY

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)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
56%Service-mix similarityView profile →

Mark Vaynkhadler, M.D.

Obstetrics & Gynecology · Brooklyn, NY

Shared published services
3 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)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
  • Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)
56%Service-mix similarityView profile →

Susan You Shi, MD

Obstetrics & Gynecology · Brooklyn, NY

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)
  • Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)
49%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.