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Compare the published Medicare service mix of Mark Jeffrey Jo, MD with clinicians in the same registry specialty: Orthopedic Surgery (CMS).

CA · Exact areaEdit location

2024 published service data · 72 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Christopher Coufal, M.D.

Orthopedic Surgery (CMS) · Walnut Creek, 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)
  • X-ray of knee, 1-2 views (73560)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
54%Service-mix similarityView profile →

Daniel Zinar, M.D.

Orthopedic Surgery (CMS) · Torrance, 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)
  • X-ray of knee, 1-2 views (73560)
  • X-ray of hip, 1 view (73501)
52%Service-mix similarityView profile →

Christina Seifert, MD

Orthopedic Surgery (CMS) · Newport Beach, 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)
  • X-ray of knee, 1-2 views (73560)
  • X-ray of hip, 1 view (73501)
51%Service-mix similarityView profile →

Eric Fulkerson, MD

Orthopedic Surgery (CMS) · Walnut Creek, 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)
  • X-ray of knee, 1-2 views (73560)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
50%Service-mix similarityView profile →

Alon Antebi, DO

Orthopedic Surgery (CMS) · Lancaster, 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)
  • Aspiration and/or injection of fluid large joint using ultrasound guidance (20611)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
49%Service-mix similarityView profile →

Nathan Ross Ehmer, D.O.

Orthopedic Surgery (CMS) · Redding, 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 low level of medical decision making, if using time, 30 minutes or more (99203)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
47%Service-mix similarityView profile →

Matthew David Robinson, D.O.

Orthopedic Surgery (CMS) · Temecula, 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)
  • X-ray of knee, 1-2 views (73560)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
45%Service-mix similarityView profile →

Lorra Marie Sharp, MD

Orthopedic Surgery (CMS) · Escondido, 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)
  • Application of stress by physician for joint imaging (77071)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
43%Service-mix similarityView profile →

Sean Thomas Campbell, MD

Orthopedic Surgery (CMS) · Sacramento, 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 low level of medical decision making, if using time, 30 minutes or more (99203)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
43%Service-mix similarityView profile →

Rebecca A Rajfer, MD

Orthopedic Surgery (CMS) · Loma Linda, 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 low level of medical decision making, if using time, 30 minutes or more (99203)
  • 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 →

D'ann Arthur, MD

Orthopedic Surgery (CMS) · Arroyo Grande, 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)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
41%Service-mix similarityView profile →

Farzin Kabaei, MD

Orthopedic 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 low level of medical decision making, if using time, 30 minutes or more (99203)
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
41%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.