Mariah Hamilton, PA-C
Physician Assistant · Greenfield, MA
Mariah Hamilton, PA-C is a physician assistant with a practice address in Greenfield, Massachusetts, and NPI 1104393891, issued on Oct 31, 2018. Check the license (Massachusetts PA6829, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mariah Hamilton
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA6829 MA
Self-reported in NPPES; status is on the state search - Practice location
- 329 Conway St, Greenfield, MA 01301
- Phone
- (413) 774-6301
- Enumerated
- Oct 31, 2018
- Record last updated
- Jul 13, 2026
- Fax
- (866) 644-0871
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 4,713 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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- Jessica Biggie, MDFamily Medicine Physician1689649584
Verify Mariah Hamilton in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license PA6829Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average physician assistant in 2024
25 Medicare Part D claims, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
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.
Mariah Hamilton among 4,713 physician assistant records in Massachusetts
Mariah Hamilton, 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 2018, is newer than 45% of them.
- NPI issued2018 · 45% of these records are older, 50% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileNo · 68% of these records are
- Record last updated2026 · 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).
Physician Assistant providers in Massachusetts
There are 4,713 physician assistant records in Massachusetts.
All 4,713 in Massachusetts → Every provider in Greenfield → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Carol Conolly, RPA-CGreenfield, MA 013011699177394
- Paul Fionte, PAGreenfield, MA 013011154975811
- Amy-Lyn Gumprecht, P.A.Greenfield, MA 013011558377093
- Ryan Haug, PAGreenfield, MA 013011013977065
- Talia Hicks, PA-CGreenfield, MA 013011750237335
- Ronald Kelter, PAGreenfield, MA 013011629030952
- Christy Russo, PA-CGreenfield, MA 013011841977857
- Alec Shostek, PA-CGreenfield, MA 013011972223790
Common questions
What is Mariah Hamilton, PA-C's NPI number?
Mariah Hamilton, PA-C's National Provider Identifier (NPI) is 1104393891, issued on Oct 31, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Mariah Hamilton, PA-C 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 Mariah Hamilton, PA-C's license?
NPPES lists Massachusetts license number PA6829, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Mariah Hamilton, PA-C prescribe under Medicare Part D?
In 2024, Mariah Hamilton, PA-C had 25 Medicare Part D claims; 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.