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Compare the published Medicare service mix of Lillian A Umbarger, MD with clinicians in the same registry specialty: Critical Care (Intensivists) · Internal Medicine (CMS).

NY · Exact areaEdit location

2024 published service data · 349 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Michael Dinkels, M.D.

Critical Care (Intensivists) · Internal Medicine · Pulmonary Disease (CMS) · Albany, NY

Shared published services
2 shared services · view billing descriptions
  • Telehealth consultation, critical care, subsequent, physicians typically spend 50 minutes communicating with the patient and providers via telehealth (G0509)
  • Telehealth consultation, critical care, initial , physicians typically spend 60 minutes communicating with the patient and providers via telehealth (G0508)
82%Service-mix similarityView profile →

Adam Barnett Keene, MD

Critical Care (Intensivists) (CMS) · Bronx, NY

Shared published services
2 shared services · view billing descriptions
  • Telehealth consultation, critical care, subsequent, physicians typically spend 50 minutes communicating with the patient and providers via telehealth (G0509)
  • Telehealth consultation, critical care, initial , physicians typically spend 60 minutes communicating with the patient and providers via telehealth (G0508)
79%Service-mix similarityView profile →

Donald Bertram Chalfin, MD

Critical Care (Intensivists) (CMS) · Bronx, NY

Shared published services
1 shared services · view billing descriptions
  • Telehealth consultation, critical care, initial , physicians typically spend 60 minutes communicating with the patient and providers via telehealth (G0508)
66%Service-mix similarityView profile →

Lisa Elizabeth Vianna, D.O.

Critical Care (Intensivists) · Infectious Disease · Internal Medicine (CMS) · New Hyde Park, NY

Shared published services
2 shared services · view billing descriptions
  • Telehealth consultation, critical care, subsequent, physicians typically spend 50 minutes communicating with the patient and providers via telehealth (G0509)
  • Telehealth consultation, critical care, initial , physicians typically spend 60 minutes communicating with the patient and providers via telehealth (G0508)
53%Service-mix similarityView profile →

Daniel Wardlaw Burke

Critical Care (Intensivists) · Pulmonary Disease (CMS) · New York, NY

Shared published services
2 shared services · view billing descriptions
  • Telehealth consultation, critical care, subsequent, physicians typically spend 50 minutes communicating with the patient and providers via telehealth (G0509)
  • Telehealth consultation, critical care, initial , physicians typically spend 60 minutes communicating with the patient and providers via telehealth (G0508)
51%Service-mix similarityView profile →

John Depetrillo, M.D.

Critical Care (Intensivists) · Infectious Disease · Internal Medicine (CMS) · Forest Hills, NY

Shared published services
2 shared services · view billing descriptions
  • Telehealth consultation, critical care, subsequent, physicians typically spend 50 minutes communicating with the patient and providers via telehealth (G0509)
  • Telehealth consultation, critical care, initial , physicians typically spend 60 minutes communicating with the patient and providers via telehealth (G0508)
39%Service-mix similarityView profile →

Pang Wai Lam, MD

Critical Care (Intensivists) (CMS) · Poughkeepsie, NY

Shared published services
2 shared services · view billing descriptions
  • Telehealth consultation, critical care, subsequent, physicians typically spend 50 minutes communicating with the patient and providers via telehealth (G0509)
  • Telehealth consultation, critical care, initial , physicians typically spend 60 minutes communicating with the patient and providers via telehealth (G0508)
37%Service-mix similarityView profile →

Junaid Habibullah, MD

Internal Medicine (CMS) · Valley Stream, NY

Shared published services
1 shared services · view billing descriptions
  • Telehealth consultation, critical care, initial , physicians typically spend 60 minutes communicating with the patient and providers via telehealth (G0508)
23%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.