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Compare the published Medicare service mix of Robert Zarum, MD with clinicians in the same registry specialty: Emergency Medicine.

HYANNIS, MA · Exact areaEdit location

2024 published service data · 13 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Haven William Spencer, DO

Emergency Medicine · Hyannis, MA

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Emergency department visit with moderate level of medical decision making (99284)
92%Service-mix similarityView profile →

Ralph Delorie, MD

Emergency Medicine · Hyannis, MA

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Emergency department visit with moderate level of medical decision making (99284)
91%Service-mix similarityView profile →

Craig Cornwall, MD

Emergency Medicine · Hyannis, MA

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Emergency department visit with moderate level of medical decision making (99284)
90%Service-mix similarityView profile →

Michael Hall, MD

Emergency Medicine · Hyannis, MA

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Emergency department visit with moderate level of medical decision making (99284)
90%Service-mix similarityView profile →

Valerie Doyle, DO

Emergency Medicine · Hyannis, MA

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Emergency department visit with moderate level of medical decision making (99284)
90%Service-mix similarityView profile →

Shant Broukian, M.D.

Emergency Medicine · Hyannis, MA

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Emergency department visit with moderate level of medical decision making (99284)
90%Service-mix similarityView profile →

Ryan Flagler Nichols, M.D.

Emergency Medicine · Hyannis, MA

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Emergency department visit with moderate level of medical decision making (99284)
87%Service-mix similarityView profile →

Kristen Liska, M.D.

Emergency Medicine · Hyannis, MA

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Emergency department visit with moderate level of medical decision making (99284)
86%Service-mix similarityView profile →

Kinsey Marie Leonard, D.O

Emergency Medicine · Hyannis, MA

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Emergency department visit with moderate level of medical decision making (99284)
86%Service-mix similarityView profile →

Nathan Rudman, MD

Emergency Medicine · Hyannis, MA

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Emergency department visit with moderate level of medical decision making (99284)
85%Service-mix similarityView profile →

Andrea Ho-Wan Li, M.D.

Emergency Medicine · Hyannis, 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)
67%Service-mix similarityView profile →

Jeff Herbst, MD

Emergency Medicine · Hyannis, 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)
  • Emergency department visit with low level of medical decision making (99283)
61%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.