Joanna Ruyun Farrell
Physician Assistant · Middleton, MA
Joanna Ruyun Farrell is a physician assistant with a practice address in Middleton, Massachusetts, and NPI 1477255925, issued on Mar 20, 2023. Check the license (Massachusetts PA100591, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Joanna Ruyun Farrell
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA100591 MA
Self-reported in NPPES; status is on the state search - Practice location
- 147 S Main St, Middleton, MA 01949
- Phone
- (978) 774-2555
- Enumerated
- Mar 20, 2023
- Record last updated
- Dec 9, 2025
- Fax
- (978) 774-8715
- Medicare enrollment
- Enrolled (PECOS I20240531001029); accepts Medicare assignment
- Medical or professional school
- Tufts University School Of Medicine, 2024
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 4,713 in Massachusetts → Look up another NPI →
Also registered at 147 S Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Joanna Ruyun Farrell in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license PA100591Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
80% fewer Medicare Part D claims than the average physician assistant in 2024
163 Medicare Part D claims for 122 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
Most prescribed
- Doxycycline Hyclate40 claims
- Amoxicillin-Clavulanate Potass28 claims
- Cefpodoxime Proxetil13 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through 2 group practices
- Middleton Family Medicine Urgent Care LLCMiddleton, MA
- Patriot Urgent Care Professionals PCWaltham, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Joanna Ruyun Farrell among 4,713 physician assistant records in Massachusetts
Joanna Ruyun Farrell is one of 4,713 physician assistant records with a practice address in Massachusetts. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2023, is newer than 75% of them.
- NPI issued2023 · 75% of these records are older, 17% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2024 · median 2019 among the 3,217 with a school on file
- Record last updated2025 · 38% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
3 physician assistant records list a practice address in Middleton
They are 3 of the 129 NPPES records with a practice address in Middleton, and 4,713 physician assistant records in Massachusetts.
All 4,713 in Massachusetts → Every provider in Middleton → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Bethany Saunders, PAMiddleton, MA 019491720756026
- Jeremy Schleibaum, PA-CMiddleton, MA 019491689914145
- Taylor Cedar, PANewburyport, MA 019501174867774
- Anna Dauksewicz, PA-CNewburyport, MA 019501841540598
- Brooke Elwell, PA-CNewburyport, MA 019501043667108
- Alexandria Habecker, PANewburyport, MA 019501700233608
- Michele Herrera, PANewburyport, MA 019501093888257
- Courtney Lucey, PA-CNewburyport, MA 019501033294400
Common questions
What is Joanna Ruyun Farrell's NPI number?
Joanna Ruyun Farrell's National Provider Identifier (NPI) is 1477255925, issued on Mar 20, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Joanna Ruyun Farrell located?
The NPPES record lists a practice address at 147 S Main St, Middleton, MA, 01949. Phone: (978) 774-2555. Providers update this record themselves, so call before visiting.
How can I verify Joanna Ruyun Farrell's license?
NPPES lists Massachusetts license number PA100591, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Joanna Ruyun Farrell prescribe under Medicare Part D?
In 2024, Joanna Ruyun Farrell had 163 Medicare Part D claims for 122 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.