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

SAN DIEGO, CA · Exact areaEdit location

2024 published service data · 43 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Arman Faravardeh, M.D., F.A.C.P.

Internal Medicine · Nephrology (CMS) · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • 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)
91%Service-mix similarityView profile →

Yan Zhong, M.D.

Internal Medicine · Nephrology (CMS) · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • 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)
88%Service-mix similarityView profile →

Jason Tyler Davis, MD

Internal Medicine · Nephrology (CMS) · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • 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)
87%Service-mix similarityView profile →

Oday Saeed, M.D.

Nephrology (CMS) · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • 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)
85%Service-mix similarityView profile →

Tepsiri Chongkrairatanakul, MD

Nephrology (CMS) · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • 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)
82%Service-mix similarityView profile →

Ambarish Mukund Athavale, MD

Nephrology (CMS) · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Dialysis services, 4 or more physician visits per month (20 years or older) (90960)
76%Service-mix similarityView profile →

Rakesh Malhotra, M.D., M.P.H.

Internal Medicine · Nephrology (CMS) · San Diego, CA

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

Guy Louis Lund, M.D.

Internal Medicine · Nephrology (CMS) · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • 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)
75%Service-mix similarityView profile →

Aleksandra Novikov, M.D.

Hospitalist · Nephrology (CMS) · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • 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)
73%Service-mix similarityView profile →

Viet Duy Nguyen, M.D.

Nephrology (CMS) · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • 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)
73%Service-mix similarityView profile →

Sina Rahimi, DO

Nephrology (CMS) · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Dialysis services, 4 or more physician visits per month (20 years or older) (90960)
71%Service-mix similarityView profile →

Bethany Elizabeth Karl, D.O.

Nephrology (CMS) · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Dialysis services, 4 or more physician visits per month (20 years or older) (90960)
71%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.