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Compare the published Medicare service mix of Joanna Ruyun Farrell with clinicians in the same registry specialty: Physician Assistant.

MIDDLETON, MA · 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 · 121 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Emily Rothermich, PA-C

Physician Assistant · Peabody, MA

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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • X-ray of chest, 2 views (71046)
66%Service-mix similarity~5.0 milesView profile →

Julian Perti, PA-C

Physician Assistant · Peabody, MA

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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • X-ray of chest, 2 views (71046)
65%Service-mix similarity~5.0 milesView profile →

Mark R Rao, PA-C

Physician Assistant · Danvers, MA

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 nucleic acid for multiple types influenza virus (87502)
  • Detection test by nucleic acid for strep (streptococcus, group a), amplified probe technique (87651)
63%Service-mix similarity~4.0 milesView profile →

Yasmin Monica Willis, PA-C

Physician Assistant · North Andover, MA

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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • X-ray of chest, 2 views (71046)
62%Service-mix similarity~7.8 milesView profile →

Brian Samuel Fisher, PA-C

Physician Assistant · North Andover, MA

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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • X-ray of chest, 2 views (71046)
61%Service-mix similarity~7.8 milesView profile →

Ulyana Kryvenko-Zalizetsky, PA-C

Physician Assistant · Saugus, MA

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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • X-ray of chest, 2 views (71046)
60%Service-mix similarity~9.0 milesView profile →

Gianna M Grasso, PA-C

Physician Assistant · North Andover, MA

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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • X-ray of chest, 2 views (71046)
60%Service-mix similarity~7.8 milesView profile →

Anna Jessica Musialowski, PA-C

Physician Assistant · Wilmington, MA

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)
  • Automated urinalysis test (81003)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
58%Service-mix similarity~8.5 milesView profile →

Randolph James Nadir, PA-C

Physician Assistant · North Andover, MA

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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Automated urinalysis test (81003)
56%Service-mix similarity~7.8 milesView profile →

Deven K Mckiernan, PA-C

Physician Assistant · Andover, MA

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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
54%Service-mix similarity~8.2 milesView profile →

Christine M Dibenedetto, PA-C

Physician Assistant · Peabody, MA

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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Automated urinalysis test (81003)
52%Service-mix similarity~5.0 milesView profile →

Carla Brogna, PA

Physician Assistant · Danvers, MA

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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
52%Service-mix similarity~4.0 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.