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Compare the published Medicare service mix of Andrew Diamond Guenthart, M.D. with clinicians in the same registry specialty: General Surgery · Hand Surgery (CMS).

CA · Exact areaEdit location

2024 published service data · 18 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Julie Renee Gilbert, M.D.

Hand Surgery (CMS) · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Injection into tendon or ligament (20550)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
71%Service-mix similarityView profile →

Eric Stanley Larson, M.D.

Hand Surgery · Orthopedic Surgery (CMS) · Santa Monica, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Injection into tendon or ligament (20550)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
69%Service-mix similarityView profile →

Ryan Carl Stehr, MD

Plastic And Reconstructive Surgery (CMS) · Fresno, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • 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 low level of medical decision making, if using time, 30 minutes or more (99203)
64%Service-mix similarityView profile →

Marie Dusch, MD

Hand Surgery · Orthopedic Surgery (CMS) · Santa Maria, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Injection into tendon or ligament (20550)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
62%Service-mix similarityView profile →

Nicholas Manes Caggiano, MD

Hand Surgery (CMS) · San Luis Obispo, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Injection into tendon or ligament (20550)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
59%Service-mix similarityView profile →

Asher Isaac Kupperman, M.D.

Hand Surgery · Orthopedic Surgery (CMS) · Santa Barbara, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Injection into tendon or ligament (20550)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
57%Service-mix similarityView profile →

Christopher G Katcherian, MD

Hand Surgery · Orthopedic Surgery (CMS) · La Mirada, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Injection into tendon or ligament (20550)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
56%Service-mix similarityView profile →

Grant Seiden, MD

Hand Surgery (CMS) · Oceanside, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Injection into tendon or ligament (20550)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
54%Service-mix similarityView profile →

Isobel Ycasas Santos, M.D.

Hand Surgery · Orthopedic Surgery (CMS) · Fresno, CA

Shared published services
3 shared services · view billing descriptions
  • Injection into tendon or ligament (20550)
  • 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 moderate level of medical decision making, if using time, 45 minutes or more (99204)
47%Service-mix similarityView profile →

Alexander L Majors, M.D.

Hand Surgery · Plastic And Reconstructive Surgery (CMS) · Fresno, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Injection into tendon or ligament (20550)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
47%Service-mix similarityView profile →

Gregory Tsushima, M.D.

General Surgery (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
46%Service-mix similarityView profile →

Jonathan Chin Hua Liu, M.D.

General Surgery · Hand Surgery (CMS) · Visalia, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Injection into tendon or ligament (20550)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
45%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.