NPPES file of Aug 9, 2026

Ryan Matthew O'Gowan, PA-C

Physician Assistant · Brockton, MA

Ryan Matthew O'Gowan, PA-C is a physician assistant with a practice address in Brockton, Massachusetts, and NPI 1184659385, issued on Jul 12, 2006. Check the license (Massachusetts 1163, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1184659385
Name
Ryan Matthew O'Gowan
Credential
PA-C
Primary taxonomy
Physician Assistant 363A00000X
License numbers
1163 MA
001528 CT
Self-reported in NPPES; status is on the state search
Practice location
680 Centre St, Brockton, MA 02302
Phone
(508) 941-7310
Enumerated
Jul 12, 2006
Record last updated
Nov 18, 2025
Fax
(508) 941-6339
Medicaid ID
003015286 CT
Medicare enrollment
Enrolled (PECOS I20050725000148); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 680 Centre St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Aileen Abesamis, MDPediatrics Physician1619056546
  2. Fadwa AhmedStudent in an Organized Health Care Education/Training Program1942903497
  3. Ezdean Alkurdi, MDStudent in an Organized Health Care Education/Training Program1063350486
  4. Raghu Amaravadi, M.D.Diagnostic Radiology Physician1295969772
  5. Waseem Amjad, MDInternal Medicine Physician1356737332
  6. Shaun Antonio, DOEmergency Medicine Physician1245811603

Verify Ryan Matthew O'Gowan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
    Search for license 1163
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Massachusetts license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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66% fewer Medicare Part D claims than the average physician assistant in 2024

279 Medicare Part D claims for 182 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims.

  1. Ryan O'Gowan279
  2. Specialty average830

Most prescribed

  1. Ibuprofen61 claims
  2. Cyclobenzaprine Hcl44 claims
  3. Cephalexin33 claims
  4. Amoxicillin-Clavulanate Potass22 claims
  5. Prednisone21 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 one group practice

  1. Signature Healthcare Medical Group IncBrockton, MA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Ryan Matthew O'Gowan among 4,713 physician assistant records in Massachusetts

Ryan Matthew O'Gowan, PA-C 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 2006, is newer than 1% of them.

  • NPI issued2006 · 1% of these records are older, 87% newer
  • In a Medicare fileYes · 78% of these records are
  • In the CMS Doctors and Clinicians fileYes · 68% of these records are
  • Graduated2000 · 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).

87 physician assistant records list a practice address in Brockton

They are 87 of the 4,287 NPPES records with a practice address in Brockton, and 4,713 physician assistant records in Massachusetts.

The 8 physician assistant records with the nearest ZIP codes

  1. Elizabeth Buckley, PA-CBrockton, MA 023021598173940
  2. Kimberly Campbell, PA-CBrockton, MA 023021215320296
  3. Jamie Chyat, PA-CBrockton, MA 023021013376730
  4. Dorothy Fillion, PA-CBrockton, MA 023021891900361
  5. Rachel Granquist, P.A.Brockton, MA 023021073718938
  6. Stacy Herman, PABrockton, MA 023021457482895
  7. Omorovbiye Odigie, PABrockton, MA 023021215122478
  8. Sean Osborne, PABrockton, MA 023021073977823

Common questions

What is Ryan Matthew O'Gowan, PA-C's NPI number?

Ryan Matthew O'Gowan, PA-C's National Provider Identifier (NPI) is 1184659385, issued on Jul 12, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Ryan Matthew O'Gowan, PA-C located?

The NPPES record lists a practice address at 680 Centre St, Brockton, MA, 02302. Phone: (508) 941-7310. Providers update this record themselves, so call before visiting.

How can I verify Ryan Matthew O'Gowan, PA-C's license?

NPPES lists Massachusetts license number 1163, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.

How much does Ryan Matthew O'Gowan, PA-C prescribe under Medicare Part D?

In 2024, Ryan Matthew O'Gowan, PA-C had 279 Medicare Part D claims for 182 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.