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Compare the published Medicare service mix of Katherine Janet Ziesing, PA-C with clinicians in the same registry specialty: Physician Assistant.

SAN FRANCISCO, CA · Exact areaEdit location

2024 published service data · 180 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Sally Liu, PA

Physician Assistant · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Aspiration and/or injection of fluid from large joint (20610)
  • 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 straightforward medical decision making, if using time, 10 minutes or more (99212)
75%Service-mix similarityView profile →

Corbin Henry Wirta, PA

Physician Assistant · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Aspiration and/or injection of fluid from large joint (20610)
  • 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, 3 views (73562)
68%Service-mix similarityView profile →

Daniel Joseph Nguyen, PA-C

Physician Assistant · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Aspiration and/or injection of fluid from large joint (20610)
  • 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, 3 views (73562)
66%Service-mix similarityView profile →

Justin Matusalem

Physician Assistant · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Aspiration and/or injection of fluid from large joint (20610)
  • 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 straightforward medical decision making, if using time, 10 minutes or more (99212)
66%Service-mix similarityView profile →

Evar Saelee, PA-C

Physician Assistant · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Aspiration and/or injection of fluid from large joint (20610)
  • 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)
62%Service-mix similarityView profile →

Isabella Rose Sanchez, PA

Physician Assistant · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Aspiration and/or injection of fluid from large joint (20610)
  • 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 straightforward medical decision making, if using time, 10 minutes or more (99212)
61%Service-mix similarityView profile →

Amber Kaur Dhillon, PA

Physician Assistant · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Aspiration and/or injection of fluid from large joint (20610)
  • 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)
61%Service-mix similarityView profile →

Allison Jean Basham, PA

Physician Assistant · San Francisco, 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 straightforward medical decision making, if using time, 10 minutes or more (99212)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
57%Service-mix similarityView profile →

Alexandra Lynn Sheperdson, PA-C

Physician Assistant · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Aspiration and/or injection of fluid from large joint (20610)
  • 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 straightforward medical decision making, if using time, 10 minutes or more (99212)
56%Service-mix similarityView profile →

Sophia May Frohberg

Physician Assistant · San Francisco, 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 straightforward medical decision making, if using time, 10 minutes or more (99212)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
51%Service-mix similarityView profile →

Tien Thi Thuy Nguyen, PA-C

Physician Assistant · San Francisco, 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 straightforward medical decision making, if using time, 10 minutes or more (99212)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
51%Service-mix similarityView profile →

Audrey Rosales Ogg, PA-C

Physician Assistant · San Francisco, 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 moderate level of decision making, if using time, 30 minutes or more (99214)
50%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.