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Compare the published Medicare service mix of Keith Martin Mullins, MD with clinicians in the same registry specialty: Internal Medicine (CMS).

LONG BEACH, CA · Exact areaEdit location

2024 published service data · 23 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Teresita Te Saylor, M.D.

Internal Medicine · Pulmonary Disease (CMS) · Long Beach, 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)
68%Service-mix similarityView profile →

Nayyer Ali, M.D.

Critical Care (Intensivists) · Internal Medicine (CMS) · Long Beach, 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)
53%Service-mix similarityView profile →

Toan T. Tyler Nguyen, M.D.

Internal Medicine (CMS) · Long Beach, 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)
37%Service-mix similarityView profile →

Barton Harris Wachs, M.D.

Urology (CMS) · Long Beach, 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)
22%Service-mix similarityView profile →

Igor Persidsky, M.D

Internal Medicine (CMS) · Long Beach, 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)
20%Service-mix similarityView profile →

H Roger Rizi, MD

Cardiovascular Disease (Cardiology) (CMS) · Long Beach, 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)
16%Service-mix similarityView profile →

Sen Bin Lai, M.D.

Cardiovascular Disease (Cardiology) · Internal Medicine (CMS) · Long Beach, CA

Shared published services
1 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
13%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.