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Compare the published Medicare service mix of Megan Charlene Sisk, D.O. with clinicians in the same registry specialty: Internal Medicine · Pulmonary Disease (CMS).

GREAT FALLS, MT · Exact areaEdit location

2024 published service data · 6 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

John J Mazur, M.D.

Critical Care (Intensivists) · Pulmonary Disease (CMS) · Great Falls, MT

Shared published services
3 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)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Test to determine lung volumes using sensors (94726)
77%Service-mix similarityView profile →

Gabor Varju, MD

Pulmonary Disease (CMS) · Great Falls, MT

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)
  • Test to determine lung volumes using sensors (94726)
  • Test to examine how well the lungs exchange gases (94729)
73%Service-mix similarityView profile →

Sheela Yadav Ahmed, MD

Pulmonary Disease (CMS) · Great Falls, MT

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)
  • Test to determine lung volumes using sensors (94726)
  • Test to examine how well the lungs exchange gases (94729)
63%Service-mix similarityView profile →

Merhala Balasubramaniam, M.D.

Pulmonary Disease (CMS) · Great Falls, MT

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)
  • Test to determine lung volumes using sensors (94726)
  • Test to examine how well the lungs exchange gases (94729)
57%Service-mix similarityView profile →

Robert M Grasseschi, MD

Pulmonary Disease (CMS) · Great Falls, MT

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)
  • Test to determine lung volumes using sensors (94726)
  • Test to examine how well the lungs exchange gases (94729)
51%Service-mix similarityView profile →

Sean B Dow, M.D.

Specialty details in registry · Great Falls, MT

Shared published services
3 shared services · view billing descriptions
  • Test to determine lung volumes using sensors (94726)
  • Test to examine how well the lungs exchange gases (94729)
  • Test to measure expiratory airflow and volume changes before and after medication administration (94060)
33%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.