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Compare the published Medicare service mix of Randolph A. Chen, MD with clinicians in the same registry specialty: Internal Medicine · Nephrology (CMS).

BELMONT, CA · 10 milesEdit location
Within 10 miles · Approximate ZIP-area distance

Approximate straight-line distances between ZIP-area centers; a city search starts from the average of its ZIP centers. Uses the primary reported practice ZIP, not an exact office address or driving distance. Records without matched coordinates are excluded. How distance works

2024 published service data · 37 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Phillip Ng, MD

Internal Medicine · Nephrology (CMS) · Redwood City, CA

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)
  • 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 50 minutes (99233)
87%Service-mix similarity~6.4 milesView profile →

Rashmi Jain, M.D.

Internal Medicine · Nephrology (CMS) · Burlingame, CA

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)
  • 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 50 minutes (99233)
72%Service-mix similarity~5.4 milesView profile →

Graham Rodwell, MD

Nephrology (CMS) · Palo Alto, CA

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)
  • 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 50 minutes (99233)
68%Service-mix similarity~9.3 milesView profile →

Graham Edwin Abra, M.D.

Internal Medicine · Nephrology (CMS) · Stanford, CA

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 50 minutes (99233)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
56%Service-mix similarity~9.7 milesView profile →

Margaret Katie Yu, MD

Internal Medicine · Nephrology (CMS) · Stanford, CA

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)
  • 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 50 minutes (99233)
56%Service-mix similarity~9.7 milesView profile →

Sankar Narayan Niranjan, MD

Internal Medicine · Nephrology (CMS) · Stanford, CA

Shared published services
1 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)
55%Service-mix similarity~9.7 milesView profile →

Brian Michael Brady, M.D.

Internal Medicine · Nephrology (CMS) · Stanford, CA

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 50 minutes (99233)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
54%Service-mix similarity~9.7 milesView profile →

Seolhyun Lee, MD

Internal Medicine · Nephrology (CMS) · Stanford, CA

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 50 minutes (99233)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
53%Service-mix similarity~9.7 milesView profile →

Subramanian Sivarajan, M.D.

Nephrology (CMS) · Palo Alto, CA

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 50 minutes (99233)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
53%Service-mix similarity~9.3 milesView profile →

Richard Alan Lafayette, M.D.

Nephrology (CMS) · Stanford, CA

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 50 minutes (99233)
  • Dialysis services, 2-3 physician visits per month (20 years or older) (90961)
52%Service-mix similarity~9.7 milesView profile →

Jillian Scott Caldwell, DO

Internal Medicine · Nephrology (CMS) · Stanford, CA

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)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
52%Service-mix similarity~9.7 milesView profile →

Jehan Zahid Bahrainwala, MD

Internal Medicine · Nephrology (CMS) · Stanford, CA

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 50 minutes (99233)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
50%Service-mix similarity~9.7 milesView 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 approximate distance 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.