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Compare the published Medicare service mix of Richard John Kochenburger, M.D. with clinicians in the same registry specialty: Obstetrics/Gynecology (CMS).

CA · Exact areaEdit location

2024 published service data · 500 eligible profiles compared. This search reached its 500-profile comparison limit, using NPI order. Narrow the location for a more focused comparison. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Jane Fang, M.D.

Obstetrics/Gynecology (CMS) · San Francisco, CA

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
  • Cervical or vaginal cancer screening; pelvic and clinical breast examination (G0101)
99%Service-mix similarityView profile →

Leslie Joana Korostoff, MD

Obstetrics/Gynecology (CMS) · Glendale, CA

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
  • Cervical or vaginal cancer screening; pelvic and clinical breast examination (G0101)
73%Service-mix similarityView profile →

Poornima Kaul, MD

Obstetrics/Gynecology (CMS) · San Francisco, CA

Shared published services
1 shared services · view billing descriptions
  • Cervical or vaginal cancer screening; pelvic and clinical breast examination (G0101)
63%Service-mix similarityView profile →

Giao Van Vu, M.D.

Obstetrics/Gynecology (CMS) · San Jose, CA

Shared published services
1 shared services · view billing descriptions
  • Cervical or vaginal cancer screening; pelvic and clinical breast examination (G0101)
63%Service-mix similarityView profile →

Marshall Robert Ching, M.D.

Orthopedic Surgery (CMS) · Oroville, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
46%Service-mix similarityView profile →

Brian T. Ching, M.D.

Orthopedic Surgery (CMS) · Oroville, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
43%Service-mix similarityView profile →

Carla Elaine Herriford, M.D.

Specialty details in registry · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
40%Service-mix similarityView profile →

Shobhana Anil Gandhi, M.D.

Obstetrics/Gynecology (CMS) · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • Cervical or vaginal cancer screening; pelvic and clinical breast examination (G0101)
38%Service-mix similarityView profile →

Carolyn Rhene Merkouris, MD

Obstetrics/Gynecology (CMS) · Woodland, CA

Shared published services
1 shared services · view billing descriptions
  • Cervical or vaginal cancer screening; pelvic and clinical breast examination (G0101)
38%Service-mix similarityView profile →

Tony Escalona Vasquez, M.D.,PH.D.

General Practice · Nuclear Medicine (CMS) · Yreka, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
38%Service-mix similarityView profile →

Edward Chock, M.D.

Family Practice · General Surgery · Thoracic Surgery · Vascular Surgery (CMS) · Oakdale, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
36%Service-mix similarityView profile →

Sun-Yin Chan, M.D.

Hand Surgery · Plastic And Reconstructive Surgery (CMS) · San Jose, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
36%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.