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Compare the published Medicare service mix of Sara Elizabeth Chapman, M.D. with clinicians in the same registry specialty: Dermatology.

MD · Exact areaEdit location

2024 published service data · 228 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Margaret Litwin Sommerville, M.D.

Dermatology · Chevy Chase, MD

Shared published services
3 shared services · view billing descriptions
  • Destruction of precancer skin growth, 2-14 growths (17003)
  • Biopsy of related skin growth, first growth (11102)
  • Destruction of skin growth, 1-14 growths (17110)
92%Service-mix similarityView profile →

Karen L Beasley, MD

Dermatology · Hunt Valley, MD

Shared published services
3 shared services · view billing descriptions
  • Destruction of precancer skin growth, 2-14 growths (17003)
  • Biopsy of related skin growth, first growth (11102)
  • Destruction of skin growth, 1-14 growths (17110)
92%Service-mix similarityView profile →

Stephen Joseph Krivda, MD

Dermatology · Rockville, MD

Shared published services
3 shared services · view billing descriptions
  • Destruction of precancer skin growth, 2-14 growths (17003)
  • Biopsy of related skin growth, first growth (11102)
  • Destruction of skin growth, 1-14 growths (17110)
88%Service-mix similarityView profile →

Mary Piazza Maiberger, MD

Dermatology · Rockville, MD

Shared published services
3 shared services · view billing descriptions
  • Destruction of precancer skin growth, 2-14 growths (17003)
  • Biopsy of related skin growth, first growth (11102)
  • Destruction of skin growth, 1-14 growths (17110)
87%Service-mix similarityView profile →

Tara Ann Rumbarger, M.D.

Dermatology · Hagerstown, MD

Shared published services
3 shared services · view billing descriptions
  • Destruction of precancer skin growth, 2-14 growths (17003)
  • Biopsy of related skin growth, first growth (11102)
  • Destruction of skin growth, 1-14 growths (17110)
86%Service-mix similarityView profile →

Sunila Singh Walia, M.D.

Dermatology · Rockville, MD

Shared published services
3 shared services · view billing descriptions
  • Destruction of precancer skin growth, 2-14 growths (17003)
  • Biopsy of related skin growth, first growth (11102)
  • Destruction of skin growth, 1-14 growths (17110)
86%Service-mix similarityView profile →

Kristin Lee Khan, MD

Dermatology · Lutherville, MD

Shared published services
3 shared services · view billing descriptions
  • Destruction of precancer skin growth, 2-14 growths (17003)
  • Biopsy of related skin growth, first growth (11102)
  • Destruction of skin growth, 1-14 growths (17110)
85%Service-mix similarityView profile →

Jonathan P Jeter, M.D.

Dermatology · Bethesda, MD

Shared published services
3 shared services · view billing descriptions
  • Destruction of precancer skin growth, 2-14 growths (17003)
  • Biopsy of related skin growth, first growth (11102)
  • Destruction of skin growth, 1-14 growths (17110)
85%Service-mix similarityView profile →

Arden Fredeking Edwards, M.D.

Dermatology · Bethesda, MD

Shared published services
3 shared services · view billing descriptions
  • Destruction of precancer skin growth, 2-14 growths (17003)
  • Biopsy of related skin growth, first growth (11102)
  • Destruction of skin growth, 1-14 growths (17110)
85%Service-mix similarityView profile →

Lawrence R Feldman, M.D.

Dermatology · Westminster, MD

Shared published services
3 shared services · view billing descriptions
  • Destruction of precancer skin growth, 2-14 growths (17003)
  • Biopsy of related skin growth, first growth (11102)
  • Destruction of skin growth, 1-14 growths (17110)
84%Service-mix similarityView profile →

Elena Hardy Allbritton, M.D.

Dermatology · Chevy Chase, MD

Shared published services
3 shared services · view billing descriptions
  • Destruction of precancer skin growth, 2-14 growths (17003)
  • Biopsy of related skin growth, first growth (11102)
  • Destruction of skin growth, 1-14 growths (17110)
84%Service-mix similarityView profile →

Alvanus Howland Hartley, MD

Dermatology · Prince Frederick, MD

Shared published services
3 shared services · view billing descriptions
  • Destruction of precancer skin growth, 2-14 growths (17003)
  • Biopsy of related skin growth, first growth (11102)
  • Destruction of skin growth, 1-14 growths (17110)
83%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.