Michael Riordan, PA-C
Physician Assistant · Pittsfield, MA
Michael Riordan, PA-C is a physician assistant with a practice address in Pittsfield, Massachusetts, and NPI 1629774195, issued on Feb 6, 2023. Check the license with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Michael Riordan
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- Practice location
- 725 North St, Pittsfield, MA 01201
- Phone
- (413) 447-2000
- Enumerated
- Feb 6, 2023
- Record last updated
- Feb 6, 2023
- Medicare enrollment
- Enrolled (PECOS I20230418001141); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 4,713 in Massachusetts → Look up another NPI →
Also registered at 725 North St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ahmed AbdelnabiInternal Medicine Physician1528620507
- Margarita Abramovich, MDPsychiatry Physician1154883239
- Jacqueline AdamsMedical-Surgical Registered Nurse1396507026
- Erik Adler, D.O.Student in an Organized Health Care Education/Training Program1700468915
- Parinaz Afrashteh, MDStudent in an Organized Health Care Education/Training Program1609677715
- Deepak Agarwal, MDDiagnostic Radiology Physician1043265754
Verify Michael Riordan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
76% fewer Medicare Part D claims than the average physician assistant in 2024
199 Medicare Part D claims for 151 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.
Most prescribed
- Azithromycin24 claims
- Doxycycline Hyclate22 claims
- Prednisone20 claims
- Amoxicillin-Clavulanate Potass19 claims
- Cephalexin19 claims
- Nitrofurantoin Mono-Macro16 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
- Berkshire Faculty Services IncWilliamstown, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael Riordan among 4,713 physician assistant records in Massachusetts
Michael Riordan, 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 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
- Graduated2022 · median 2019 among the 3,217 with a school on file
- Record last updated2023 · 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).
47 physician assistant records list a practice address in Pittsfield
They are 47 of the 2,189 NPPES records with a practice address in Pittsfield, and 4,713 physician assistant records in Massachusetts.
All 4,713 in Massachusetts → Every provider in Pittsfield → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Nicolle Alvarez, RPA-CPittsfield, MA 012011942591193
- Christopher Biernacki, PACPittsfield, MA 012011114985736
- Nestor Bond, PAPittsfield, MA 012011063729697
- Dianna Brooks, PACPittsfield, MA 012011659480796
- William Buckenroth, PA-CPittsfield, MA 012011811136591
- Victoria Burgess, PA-CPittsfield, MA 012011255442364
- Bonnie Chard, PA-CPittsfield, MA 012011083722862
- Colleen Halvorsen-Sinclair, PAPittsfield, MA 012011437288685
Common questions
What is Michael Riordan, PA-C's NPI number?
Michael Riordan, PA-C's National Provider Identifier (NPI) is 1629774195, issued on Feb 6, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Michael Riordan, PA-C located?
The NPPES record lists a practice address at 725 North St, Pittsfield, MA, 01201. Phone: (413) 447-2000. Providers update this record themselves, so call before visiting.
How can I verify Michael Riordan, PA-C's license?
Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Michael Riordan, PA-C prescribe under Medicare Part D?
In 2024, Michael Riordan, PA-C had 199 Medicare Part D claims for 151 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.