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Compare the published Medicare service mix of Ashley N Maranino, M.D. with clinicians in the same registry specialty: Gastroenterology · Internal Medicine (CMS).

HARTSDALE, NY · 10 milesEdit location
Within 10 miles · Approximate ZIP-area distance

Approximate straight-line distances between ZIP-area centers; a city search starts from the average of its ZIP centers. Uses the primary reported practice ZIP, not an exact office address or driving distance. Records without matched coordinates are excluded. How distance works

2024 published service data · 70 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Bryan L Green, MD

Gastroenterology · Internal Medicine (CMS) · White Plains, NY

Shared published services
2 shared services · view billing descriptions
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
46%Service-mix similarity~2.7 milesView profile →

Kati Glockenberg

Gastroenterology · Internal Medicine (CMS) · Purchase, NY

Shared published services
1 shared services · view billing descriptions
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
45%Service-mix similarity~5.0 milesView profile →

Floyd Clayton Byfield, M.D

Gastroenterology · Internal Medicine (CMS) · Sleepy Hollow, NY

Shared published services
2 shared services · view billing descriptions
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
44%Service-mix similarity~5.2 milesView profile →

Ghassan Philip Sayegh, D.O.

Gastroenterology · Internal Medicine (CMS) · Yonkers, NY

Shared published services
2 shared services · view billing descriptions
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
43%Service-mix similarity~6.0 milesView profile →

Christopher Andrew Martin, M.D.

Gastroenterology (CMS) · Sleepy Hollow, NY

Shared published services
2 shared services · view billing descriptions
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
42%Service-mix similarity~5.2 milesView profile →

Peter Hale Stein, M.D.

Gastroenterology (CMS) · Sleepy Hollow, NY

Shared published services
2 shared services · view billing descriptions
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
41%Service-mix similarity~5.2 milesView profile →

Kelly Diaz

Gastroenterology · Internal Medicine (CMS) · Scarsdale, NY

Shared published services
1 shared services · view billing descriptions
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
39%Service-mix similarity~1.9 milesView profile →

Thomas A Ullman, M.D.

Gastroenterology (CMS) · Scarsdale, NY

Shared published services
1 shared services · view billing descriptions
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
39%Service-mix similarity~1.9 milesView profile →

Walter Klein, M.D.

Gastroenterology (CMS) · Harrington Park, NJ

Shared published services
2 shared services · view billing descriptions
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
39%Service-mix similarity~9.2 milesView profile →

Richard Mark Fazio, MD

Gastroenterology (CMS) · Purchase, NY

Shared published services
2 shared services · view billing descriptions
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
35%Service-mix similarity~5.0 milesView profile →

Michael Gerdis, MD

Gastroenterology · Internal Medicine (CMS) · Yonkers, NY

Shared published services
2 shared services · view billing descriptions
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
34%Service-mix similarity~4.2 milesView profile →

Gaurav Bhardwaj, MD

Gastroenterology (CMS) · Valhalla, NY

Shared published services
1 shared services · view billing descriptions
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
31%Service-mix similarity~4.8 milesView 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 approximate distance 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.