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Compare the published Medicare service mix of William S Zirker, MD with clinicians in the same registry specialty: Specialty details in registry.

CRUM LYNNE, PA · 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 · 20 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Asra Arif, MD

Geriatric Medicine · Internal Medicine (CMS) · Ridley Park, PA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
61%Service-mix similarity~1.1 milesView profile →

Christopher Hwang, M.D.

Family Practice · Geriatric Medicine (CMS) · Broomall, PA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes (99349)
  • Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)
57%Service-mix similarity~7.4 milesView profile →

Gerard A. Miller, M.D.

Internal Medicine (CMS) · Havertown, PA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
57%Service-mix similarity~7.7 milesView profile →

Kathryn Elizabeth Beldowski, M.D.

Geriatric Medicine · Internal Medicine (CMS) · Broomall, PA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)
  • Insertion of needle into vein for collection of blood sample (36415)
56%Service-mix similarity~7.4 milesView profile →

Karl G Schwabe, MD

Specialty details in registry · Havertown, PA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)
  • Insertion of needle into vein for collection of blood sample (36415)
53%Service-mix similarity~7.7 milesView profile →

Julianna Cara Ricco, MD

Internal Medicine (CMS) · Wynnewood, PA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes (99349)
  • Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)
48%Service-mix similarity~9.7 milesView profile →

Jugeet Kanwal

Geriatric Medicine · Internal Medicine (CMS) · Chester, PA

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
47%Service-mix similarity~2.4 milesView profile →

Catherine Clarke, MD

Internal Medicine (CMS) · Wynnewood, PA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)
  • Insertion of needle into vein for collection of blood sample (36415)
46%Service-mix similarity~9.7 milesView profile →

Charles Breish, M.D.

Geriatric Medicine · Internal Medicine (CMS) · Wynnewood, PA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes (99349)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
38%Service-mix similarity~9.7 milesView profile →

Jessica Xin Ying Zuo, MD

Geriatric Medicine · Internal Medicine (CMS) · Philadelphia, PA

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)
19%Service-mix similarity~9.5 milesView profile →

Alyson Michener, MD

Geriatric Medicine (CMS) · Philadelphia, PA

Shared published services
1 shared services · view billing descriptions
  • Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes (99349)
14%Service-mix similarity~9.5 milesView profile →

Patrick Joseph Dostal, MD

Geriatric Medicine · Internal Medicine (CMS) · Wynnewood, PA

Shared published services
1 shared services · view billing descriptions
  • Assessment of and care planning for patient with impaired thought processing, typically 60 minutes (99483)
11%Service-mix similarity~9.7 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.