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Compare the published Medicare service mix of Douglas T Summerfield, MD with clinicians in the same registry specialty: Internal Medicine (CMS).

IA · Exact areaEdit location

2024 published service data · 20 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Gregory A Schmidt, MD

Specialty details in registry · Iowa City, IA

Shared published services
2 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
83%Service-mix similarityView profile →

James Matthew Wilson, M.D.

Critical Care (Intensivists) · Internal Medicine (CMS) · Fort Dodge, IA

Shared published services
3 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Insertion of non-tunneled central venous tube for infusion (5 years or older) (36556)
70%Service-mix similarityView profile →

Jonathan S Simmons, DO

Critical Care (Intensivists) · Internal Medicine (CMS) · Iowa City, IA

Shared published services
2 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
68%Service-mix similarityView profile →

Robert Jesse Blount, M.D.

Critical Care (Intensivists) · Internal Medicine · Pediatric Medicine · Pulmonary Disease (CMS) · Iowa City, IA

Shared published services
2 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
66%Service-mix similarityView profile →

Charles Allen Rappaport, MD

Critical Care (Intensivists) · Internal Medicine · Pulmonary Disease (CMS) · Iowa City, IA

Shared published services
2 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
61%Service-mix similarityView profile →

Peter James Szachowicz, M.D.

Critical Care (Intensivists) · Internal Medicine · Pulmonary Disease (CMS) · Iowa City, IA

Shared published services
1 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
61%Service-mix similarityView profile →

Jaime P. Murphy, MD

Critical Care (Intensivists) · Pulmonary Disease (CMS) · Iowa City, IA

Shared published services
1 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
61%Service-mix similarityView profile →

Brian Kent Gehlbach, MD

Specialty details in registry · Iowa City, IA

Shared published services
1 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
45%Service-mix similarityView profile →

Andrei Schwartz, M.D

Critical Care (Intensivists) · Pulmonary Disease (CMS) · Cedar Rapids, IA

Shared published services
2 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
45%Service-mix similarityView profile →

Iaswarya Ganapathiraju, DO

Critical Care (Intensivists) · Internal Medicine (CMS) · Des Moines, IA

Shared published services
2 shared services · view billing descriptions
  • Insertion of non-tunneled central venous tube for infusion (5 years or older) (36556)
  • Emergent insertion of breathing tube into windpipe using an endoscope (31500)
39%Service-mix similarityView profile →

Swaroopa Rani Nalamalapu, MD

Internal Medicine (CMS) · Waterloo, IA

Shared published services
2 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
39%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.