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Compare the published Medicare service mix of Adina Rachel Gregor, FNP with clinicians in the same registry specialty: Family Nurse Practitioner.

WESTLAKE VILLAGE, CA · 10 milesEdit location
Within 10 miles · Approximate ZIP-area distance

Approximate straight-line distances between ZIP-area centers; a city search starts from the average of its ZIP centers. Uses the primary reported practice ZIP, not an exact office address or driving distance. Records without matched coordinates are excluded. How distance works

2024 published service data · 24 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Michelle Leigh Silva

Family Nurse Practitioner · Simi Valley, 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)
  • Automated urinalysis test (81003)
85%Service-mix similarity~8.8 milesView profile →

Brandi Elyse Ford, FNP-C

Family Nurse Practitioner · Simi Valley, 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)
  • Automated urinalysis test (81003)
70%Service-mix similarity~8.8 milesView profile →

Cleotilde Zamora, NURSE PRACTITIONER

Family Nurse Practitioner · Calabasas, 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)
62%Service-mix similarity~9.0 milesView profile →

Jennifer Rusnanto Ng, NP

Family Nurse Practitioner · Agoura Hills, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Detection test by immunoassay with direct visual observation for severe acute respiratory syndrome coronavirus 2 (covid-19) (87811)
  • X-ray of chest, 2 views (71046)
48%Service-mix similarity~4.0 milesView profile →

Mary Ann Reveles

Family Nurse Practitioner · Thousand Oaks, 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)
  • Automated urinalysis test (81003)
47%Service-mix similarity~5.3 milesView profile →

Jacqueline Marie Jollota, FNP

Family Nurse Practitioner · Thousand Oaks, 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)
41%Service-mix similarity~5.3 milesView profile →

Carmen Arando Summers, MSN, APRN, FNP-C

Family Nurse Practitioner · Moorpark, CA

Shared published services
2 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)
41%Service-mix similarity~9.6 milesView profile →

Karen Popp, N.P.

Family Nurse Practitioner · Thousand Oaks, 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)
  • Urinalysis, manual test (81002)
39%Service-mix similarity~5.3 milesView profile →

Lynn Coates-Leisen, MSN, APRN, FNP-C

Family Nurse Practitioner · Thousand Oaks, CA

Shared published services
2 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)
39%Service-mix similarity~3.3 milesView profile →

Brittany Zeigler, NP

Family Nurse Practitioner · Simi Valley, CA

Shared published services
2 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)
  • Automated urinalysis test (81003)
39%Service-mix similarity~8.8 milesView profile →

Kelley Mckenna

Family Nurse Practitioner · Thousand Oaks, CA

Shared published services
2 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)
31%Service-mix similarity~5.3 milesView profile →

Alison Elizabeth Collier, FNP

Family Nurse Practitioner · Simi Valley, 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)
31%Service-mix similarity~8.8 milesView 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 approximate distance 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.