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Compare the published Medicare service mix of Michael Christopher Akom, M.D. with clinicians in the same registry specialty: Internal Medicine · Nephrology (CMS).

PORTLAND, ME · Exact areaEdit location

2024 published service data · 19 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Ioan Cosma, MD

Internal Medicine · Nephrology (CMS) · Portland, ME

Shared published services
3 shared services · view billing descriptions
  • Dialysis services, 4 or more physician visits per month (20 years or older) (90960)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
88%Service-mix similarityView profile →

Gary Diperna, DO

Internal Medicine · Nephrology (CMS) · Portland, ME

Shared published services
3 shared services · view billing descriptions
  • Dialysis services, 4 or more physician visits per month (20 years or older) (90960)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
75%Service-mix similarityView profile →

Grant Oakley, D.O.

Nephrology (CMS) · Portland, ME

Shared published services
3 shared services · view billing descriptions
  • Dialysis services, 4 or more physician visits per month (20 years or older) (90960)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
73%Service-mix similarityView profile →

Jonathan Amatruda, M.D.

Nephrology (CMS) · Portland, ME

Shared published services
3 shared services · view billing descriptions
  • Dialysis services, 4 or more physician visits per month (20 years or older) (90960)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Dialysis services, 2-3 physician visits per month (20 years or older) (90961)
64%Service-mix similarityView profile →

Alan Scott Segal, M.D.

Specialty details in registry · Portland, ME

Shared published services
3 shared services · view billing descriptions
  • Dialysis services, 4 or more physician visits per month (20 years or older) (90960)
  • Dialysis services, 2-3 physician visits per month (20 years or older) (90961)
  • Hemodialysis procedure with physician evaluation (90935)
62%Service-mix similarityView profile →

Patricia L Cantlin, DO

Specialty details in registry · Portland, ME

Shared published services
2 shared services · view billing descriptions
  • Dialysis services, 4 or more physician visits per month (20 years or older) (90960)
  • Dialysis services, 2-3 physician visits per month (20 years or older) (90961)
53%Service-mix similarityView profile →

John Patrick Vella, M.D.

Internal Medicine · Nephrology (CMS) · Portland, ME

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)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Hemodialysis procedure with physician evaluation (90935)
53%Service-mix similarityView profile →

Hassan Mahmoud, M.D.

Nephrology (CMS) · Portland, ME

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)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Hemodialysis procedure with physician evaluation (90935)
51%Service-mix similarityView profile →

Sean Andrew Hebert, MD

Nephrology (CMS) · Portland, ME

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)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
48%Service-mix similarityView profile →

Eric Holmes, PA-C

Physician Assistant (CMS) · Portland, ME

Shared published services
2 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)
  • Hemodialysis procedure with physician evaluation (90935)
48%Service-mix similarityView profile →

Mark Godfrey Parker, M.D.

Internal Medicine · Nephrology (CMS) · Portland, ME

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)
  • Complete ultrasound scan behind abdominal cavity (76770)
  • Limited ultrasound scan behind abdominal cavity (76775)
46%Service-mix similarityView profile →

Abd Assalam Qannus, M.D.

Nephrology (CMS) · Portland, ME

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)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
45%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.