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Compare the published Medicare service mix of Eric Bryan Ontiveros, M.D. with clinicians in the same registry specialty: Anesthesiology.

ORANGE, CA · Exact areaEdit location

2024 published service data · 150 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Clifford Arnold Char, M.D.

Anesthesiology · Orange, CA

Shared published services
3 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
  • Ultrasonic guidance for blood vessel access (76937)
  • Anesthesia for procedure on heart and large blood vessels (00560)
76%Service-mix similarityView profile →

Sankalp Sehgal, M.D.

Anesthesiology · Orange, CA

Shared published services
3 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
  • Ultrasonic guidance for blood vessel access (76937)
  • Anesthesia for procedure on heart and large blood vessels (00560)
54%Service-mix similarityView profile →

David Janiczek, MD

Anesthesiology · Orange, CA

Shared published services
3 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
  • Ultrasonic guidance for blood vessel access (76937)
  • Anesthesia for procedure on heart and large blood vessels (00560)
51%Service-mix similarityView profile →

Daniel Scheinberg

Anesthesiology · Orange, CA

Shared published services
2 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
  • Ultrasonic guidance for blood vessel access (76937)
50%Service-mix similarityView profile →

Samuel Barsh, MD

Anesthesiology · Orange, CA

Shared published services
3 shared services · view billing descriptions
  • Injection of substance into lower spine canal (62322)
  • Anesthesia for procedure for total knee joint replacement (01402)
  • Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)
48%Service-mix similarityView profile →

Steven Ariel Maler, M.D.

Anesthesiology · Orange, CA

Shared published services
3 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
  • Ultrasonic guidance for blood vessel access (76937)
  • Anesthesia for procedure on heart and large blood vessels (00560)
47%Service-mix similarityView profile →

Rajesh K. Bhat, M.D.

Anesthesiology · Orange, CA

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for procedure on heart and large blood vessels (00560)
  • Anesthesia for x-ray on artery of brain, heart, or chest (01926)
  • Anesthesia for procedure for total knee joint replacement (01402)
45%Service-mix similarityView profile →

Dragos Diaconescu, M.D.

Anesthesiology · Orange, CA

Shared published services
3 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
  • Anesthesia for procedure for total knee joint replacement (01402)
  • Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)
45%Service-mix similarityView profile →

Michael Doan, MD

Anesthesiology · Orange, CA

Shared published services
3 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
  • Ultrasonic guidance for blood vessel access (76937)
  • Anesthesia for procedure for total knee joint replacement (01402)
44%Service-mix similarityView profile →

Bobby Bahadorani, D.O.

Anesthesiology · Orange, CA

Shared published services
2 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
  • Ultrasonic guidance for blood vessel access (76937)
39%Service-mix similarityView profile →

Siyavash Fooladian, M.D.

Anesthesiology · Orange, CA

Shared published services
1 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
36%Service-mix similarityView profile →

Harpreet Singh Sandhu, M.D.

Anesthesiology · Orange, CA

Shared published services
3 shared services · view billing descriptions
  • Injection of substance into lower spine canal (62322)
  • Anesthesia for procedure for total knee joint replacement (01402)
  • Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)
34%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.