Peter A. Buchanan, PA
Medical Physician Assistant · Greenfield, MA
Peter A. Buchanan, PA is a medical physician assistant with a practice address in Greenfield, Massachusetts, and NPI 1821304312, issued on Aug 23, 2010. Check the license (Massachusetts 4009, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Peter A. Buchanan
- Credential
- PA
- Primary taxonomy
- Medical Physician Assistant 363AM0700X
- License number
- 4009 MA
Self-reported in NPPES; status is on the state search - Practice location
- 329 Conway St, Greenfield, MA 01301
- Phone
- (413) 774-6301
- Enumerated
- Aug 23, 2010
- Record last updated
- Apr 23, 2024
- Fax
- (866) 644-0871
- Medicare enrollment
- Enrolled (PECOS I20101208000866); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest medical physician assistant records → All 886 in Massachusetts → Look up another NPI →
Also registered at 329 Conway St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- John Anderson, ED.D.Clinical Psychologist1871678136
- Lisa Appleton, NPNurse Practitioner1831219609
- Marie Bartlett, MSWClinical Social Worker1790815306
- Barbara Berthiaume, APRNFamily Nurse Practitioner1053736629
- Jessica Biggie, MDFamily Medicine Physician1689649584
Verify Peter A. Buchanan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license 4009Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4.1 times the Medicare Part D claims of the average medical physician assistant in 2024
4,684 Medicare Part D claims for 504 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 155 claims were for opioids.
Most prescribed
- Atorvastatin Calcium317 claims
- Lisinopril228 claims
- Amlodipine Besylate187 claims
- Losartan Potassium131 claims
- Hydrochlorothiazide124 claims
- Gabapentin121 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
- Valley Medical Group PCGreenfield, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Peter A. Buchanan among 886 medical physician assistant records in Massachusetts
Peter A. Buchanan, PA is one of 886 medical 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 2010, is newer than 39% of them.
- NPI issued2010 · 39% of these records are older, 59% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2010 · median 2015 among the 559 with a school on file
- Record last updated2024 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AM0700X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
14 medical physician assistant records list a practice address in Greenfield
They are 14 of the 1,251 NPPES records with a practice address in Greenfield, and 886 medical physician assistant records in Massachusetts.
All 886 in Massachusetts → Every provider in Greenfield → Medical Physician Assistant nationwide →
The 8 medical physician assistant records with the nearest ZIP codes
- Alyssa Ayala, PA-CGreenfield, MA 013011912356668
- Jessica Bartlett, PAGreenfield, MA 013011821321050
- Matthew Burns, PAGreenfield, MA 013011730258617
- Katherine Cameron, PA-CGreenfield, MA 013011942469119
- Melinda Connors, P.A.Greenfield, MA 013011720044977
- Natalie Harding, PA-CGreenfield, MA 013011801153689
- Katrina Hull, P.AGreenfield, MA 013011730516147
- Timothy KangGreenfield, MA 013011629742267
Common questions
What is Peter A. Buchanan, PA's NPI number?
Peter A. Buchanan, PA's National Provider Identifier (NPI) is 1821304312, issued on Aug 23, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Peter A. Buchanan, PA located?
The NPPES record lists a practice address at 329 Conway St, Greenfield, MA, 01301. Phone: (413) 774-6301. Providers update this record themselves, so call before visiting.
How can I verify Peter A. Buchanan, PA's license?
NPPES lists Massachusetts license number 4009, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Peter A. Buchanan, PA prescribe under Medicare Part D?
In 2024, Peter A. Buchanan, PA had 4,684 Medicare Part D claims for 504 beneficiaries; the average among medical physician assistant prescribers was 1,148. 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.