Gregory Thomas Marshall, M.D.
Surgery Physician · Farmington, ME
Gregory Thomas Marshall, M.D. is a surgery physician with a practice address in Farmington, Maine, and NPI 1225134174, issued on Sep 16, 2006. Check the license (Maine 013945, as entered in NPPES) on the Maine Board of Licensure in Medicine; the Medicare figures below come from public CMS files.
- Name
- Gregory Thomas Marshall
- Credential
- M.D.
- Primary taxonomy
- Surgery Physician 208600000X
- License number
- 013945 ME
Self-reported in NPPES; status is on the state search - Practice location
- 181 Franklin Health Commons, Farmington, ME 04938
- Phone
- (207) 778-6579
- Enumerated
- Sep 16, 2006
- Record last updated
- Jan 5, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (207) 778-6409
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 229 in Maine → Look up another NPI →
Also registered at 181 Franklin Health Commons
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Tara Aumand, M.DObstetrics & Gynecology Physician1265528863
- Jacques Belair, M.D.Obstetrics & Gynecology Physician1750312567
- Zachary BlakemanFoot & Ankle Surgery Podiatrist1669737748
- Joseph Caruso, MDSurgery Physician1720311293
- Gabriel Civiello, MDPediatrics Physician1568696326
- Dawn Elliott, MDObstetrics & Gynecology Physician1376529792
Verify Gregory Thomas Marshall in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaine Board of Licensure in Medicine
Search for license 013945Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The MIPS final score for 2023 (Medicare payment program): 98.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Gregory Thomas Marshall among 229 surgery physician records in Maine
Gregory Thomas Marshall, M.D. is one of 229 surgery physician records with a practice address in Maine. 68% 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 11% of them.
- NPI issued2006 · 11% of these records are older, 43% newer
- In a Medicare fileYes · 68% of these records are
- In the CMS Doctors and Clinicians fileNo · 53% of these records are
- Record last updated2012 · 66% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
9 surgery physician records list a practice address in Farmington
They are 9 of the 349 NPPES records with a practice address in Farmington, and 229 surgery physician records in Maine.
All 229 in Maine → Every provider in Farmington → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- Joseph Caruso, MDFarmington, ME 049381720311293
- Michael Damiani, DOFarmington, ME 049381265992184
- David Dixon, M.D.Farmington, ME 049381124124979
- Mohamed Elhag, MDFarmington, ME 049381932135829
- Anfin Erickson, M.D.Farmington, ME 049381174956742
- Eric Gunther, M.D.Farmington, ME 049381083710834
- R. Hayward, M.D.Farmington, ME 049381699858910
- Shane Lydon, M.D.Farmington, ME 049381497987945
Common questions
What is Gregory Thomas Marshall, M.D.'s NPI number?
Gregory Thomas Marshall, M.D.'s National Provider Identifier (NPI) is 1225134174, issued on Sep 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Thomas Marshall, M.D. located?
The NPPES record lists a practice address at 181 Franklin Health Commons, Farmington, ME, 04938. Phone: (207) 778-6579. Providers update this record themselves, so call before visiting.
How can I verify Gregory Thomas Marshall, M.D.'s license?
NPPES lists Maine license number 013945, as entered by the provider. Search the Maine Board of Licensure in Medicine at https://www.maine.gov/md/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is Gregory Thomas Marshall, M.D.'s MIPS final score?
The 2023 MIPS final score is 98.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.