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Compare the published Medicare service mix of Jennifer Amponsah Dion-Gokan, FNP with clinicians in the same registry specialty: Nurse Practitioner.

WALNUT CREEK, CA · Exact areaEdit location

2024 published service data · 23 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Katherine A Westbrook, N.P.

Nurse Practitioner · Walnut Creek, CA

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
75%Service-mix similarityView profile →

Renita R Vinluan-Fan, NP

Nurse Practitioner · Walnut Creek, CA

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
71%Service-mix similarityView profile →

Jessie Aileen Bernard, NP

Nurse Practitioner · Walnut Creek, CA

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
68%Service-mix similarityView profile →

John Judson Trix, MS, RN, APRN-BC

Nurse Practitioner · Walnut Creek, CA

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
64%Service-mix similarityView profile →

Mary Angelyn Joves Clark, MSN, APRN

Nurse Practitioner · Walnut Creek, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
51%Service-mix similarityView profile →

Sarah Buenviaje, M.S.N., O.N.P.

Nurse Practitioner · Walnut Creek, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
43%Service-mix similarityView profile →

Yajuan Zhong Leonard, APRN

Nurse Practitioner · Walnut Creek, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
39%Service-mix similarityView profile →

Allison Friede, NP

Nurse Practitioner · Walnut Creek, CA

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
37%Service-mix similarityView profile →

Shannon Chakedis

Nurse Practitioner · Walnut Creek, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
37%Service-mix similarityView profile →

Alice Choi, APN

Nurse Practitioner · Walnut Creek, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
22%Service-mix similarityView profile →

Maki Matsumura, NP-C

Nurse Practitioner · Walnut Creek, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
18%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.