HCPList Know more before you call. About
A DIFFERENT WAY TO EXPLORE

Similar work.
More providers to explore.

Compare the published Medicare service mix of Alfort Briones Santos, M.D.,R.N with clinicians in the same registry specialty: Family Practice · Internal Medicine (CMS).

LAFAYETTE, 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 · 140 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Justin Paul Lee, M.D.

Hospitalist · Internal Medicine (CMS) · Oakland, CA

Shared published services
2 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
87%Service-mix similarity~9.3 milesView profile →

Eric Paul Hoenig, M.D.

Specialty details in registry · Concord, CA

Shared published services
2 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
87%Service-mix similarity~7.2 milesView profile →

Prachi Priyam, MD

Hospitalist (CMS) · Concord, CA

Shared published services
2 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
87%Service-mix similarity~7.2 milesView profile →

Carol R Schaffer, M.D.

Family Practice · Hospitalist (CMS) · Concord, CA

Shared published services
2 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
87%Service-mix similarity~7.2 milesView profile →

Amit Rajguru, M.D.

Specialty details in registry · Concord, CA

Shared published services
2 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
87%Service-mix similarity~7.2 milesView profile →

Kristy Nguyen

Hospitalist (CMS) · Concord, CA

Shared published services
2 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
87%Service-mix similarity~7.2 milesView profile →

Kristine Santiano, MD

Hospitalist (CMS) · Walnut Creek, CA

Shared published services
2 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
85%Service-mix similarity~5.0 milesView profile →

Elaine Joyce Tang

Hospitalist (CMS) · Concord, CA

Shared published services
2 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
83%Service-mix similarity~7.2 milesView profile →

Andreux W Chernne, MD

Hospitalist · Internal Medicine (CMS) · Walnut Creek, CA

Shared published services
2 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
81%Service-mix similarity~5.0 milesView profile →

Kevin Ouyi Lin, M.D.

Internal Medicine (CMS) · Berkeley, CA

Shared published services
3 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
  • Critical care, first 30-74 minutes (99291)
81%Service-mix similarity~8.0 milesView profile →

Martin J Garcia, M.D.

Hospitalist · Internal Medicine (CMS) · Oakland, CA

Shared published services
2 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
  • Critical care, first 30-74 minutes (99291)
78%Service-mix similarity~9.3 milesView profile →

Gerard Pierre Jenkins, M.D.

Hospitalist · Internal Medicine (CMS) · Berkeley, CA

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
69%Service-mix similarity~8.0 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.