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Compare the published Medicare service mix of Benjamin S Grimmnitz, MD with clinicians in the same registry specialty: Emergency Medicine.

BOSTON, MA · Exact areaEdit location

2024 published service data · 395 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Theodore Mooncai, MD

Emergency Medicine · Boston, MA

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with moderate level of medical decision making (99284)
  • Electrocardiogram (ecg) 1 to 3 leads with review by physician only (93042)
96%Service-mix similarityView profile →

Joshua Ryan Sheehan, MD

Emergency Medicine · Boston, MA

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with moderate level of medical decision making (99284)
  • Electrocardiogram (ecg) 1 to 3 leads with review by physician only (93042)
96%Service-mix similarityView profile →

Amir Hootan Darvish, MD

Emergency Medicine · Boston, MA

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with moderate level of medical decision making (99284)
  • Electrocardiogram (ecg) 1 to 3 leads with review by physician only (93042)
91%Service-mix similarityView profile →

Augustus B Colangelo, M.D.

Emergency Medicine · Boston, MA

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with moderate level of medical decision making (99284)
  • Electrocardiogram (ecg) 1 to 3 leads with review by physician only (93042)
91%Service-mix similarityView profile →

Nadine Youssef, M.D.

Emergency Medicine · Boston, MA

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with moderate level of medical decision making (99284)
  • Electrocardiogram (ecg) 1 to 3 leads with review by physician only (93042)
91%Service-mix similarityView profile →

Matthew B Mostofi, D.O.

Emergency Medicine · Boston, MA

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with moderate level of medical decision making (99284)
  • Electrocardiogram (ecg) 1 to 3 leads with review by physician only (93042)
91%Service-mix similarityView profile →

Benjamin T Shelton, MD

Emergency Medicine · Boston, MA

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with moderate level of medical decision making (99284)
  • Electrocardiogram (ecg) 1 to 3 leads with review by physician only (93042)
90%Service-mix similarityView profile →

Laura Janneck

Emergency Medicine · Boston, MA

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with moderate level of medical decision making (99284)
  • Electrocardiogram (ecg) 1 to 3 leads with review by physician only (93042)
89%Service-mix similarityView profile →

Kathryn Rodriguez Lupez, M.D.

Emergency Medicine · Boston, MA

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with moderate level of medical decision making (99284)
  • Electrocardiogram (ecg) 1 to 3 leads with review by physician only (93042)
88%Service-mix similarityView profile →

Marc Hedlund, MD

Emergency Medicine · Boston, MA

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with moderate level of medical decision making (99284)
  • Electrocardiogram (ecg) 1 to 3 leads with review by physician only (93042)
87%Service-mix similarityView profile →

Michael Joseph Vortmann, MD

Emergency Medicine · Boston, MA

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with moderate level of medical decision making (99284)
  • Critical care, first 30-74 minutes (99291)
87%Service-mix similarityView profile →

Zayir Mohammed Malik, M.D.

Emergency Medicine · Boston, MA

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with moderate level of medical decision making (99284)
  • Critical care, first 30-74 minutes (99291)
87%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.