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Compare the published Medicare service mix of Benjamin Christian Bullock, D.O. with clinicians in the same registry specialty: Hospitalist · Internal Medicine (CMS).

COATESVILLE, PA · 25 milesEdit location
Within 25 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 · 69 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Lisa Kristen Kernic, DO

Internal Medicine (CMS) · Lancaster, PA

Shared published services
2 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
100%Service-mix similarity~24.5 milesView profile →

Usman Zulfiqar, M.D.

Hospitalist · Internal Medicine (CMS) · Ephrata, PA

Shared published services
2 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
99%Service-mix similarity~23.0 milesView profile →

Lisa B Black, MD

Specialty details in registry · West Chester, PA

Shared published services
2 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
92%Service-mix similarity~12.1 milesView profile →

Pamela H Cines, MD

Hospitalist · Internal Medicine (CMS) · West Chester, PA

Shared published services
2 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
92%Service-mix similarity~12.1 milesView profile →

Sawsan Yasen Zammam, M.D.

Geriatric Medicine · Hospitalist · Internal Medicine (CMS) · Ephrata, PA

Shared published services
2 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
81%Service-mix similarity~23.0 milesView profile →

Michael Keewook Chang, MD

Hospitalist · Internal Medicine (CMS) · Paoli, PA

Shared published services
2 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
81%Service-mix similarity~18.6 milesView profile →

Millie S Joneja, DO

Hospitalist · Internal Medicine (CMS) · Paoli, PA

Shared published services
2 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
79%Service-mix similarity~18.6 milesView profile →

Jason Michael Wentzek, DO

Hospitalist · Internal Medicine (CMS) · Paoli, PA

Shared published services
2 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
79%Service-mix similarity~18.6 milesView profile →

Phillip Jungho Choi, M.D.

Internal Medicine (CMS) · Paoli, PA

Shared published services
2 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
75%Service-mix similarity~18.6 milesView profile →

Melissa Martenis Sasso, DO

Internal Medicine (CMS) · Lancaster, PA

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
75%Service-mix similarity~24.5 milesView profile →

Denise A Webb, M.D.

Family Practice · Hospitalist (CMS) · Media, PA

Shared published services
2 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
72%Service-mix similarity~23.0 milesView profile →

Elaine L Goldhammer, MD

Hospitalist · Internal Medicine (CMS) · Ephrata, PA

Shared published services
2 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
66%Service-mix similarity~23.0 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.