Gregory A. Leach, MD
Hospitalist Physician · Biddeford, ME
Gregory A. Leach, MD is a hospitalist physician with a practice address in Biddeford, Maine, and NPI 1538246095, issued on Nov 1, 2006. Check the license (Maine 014595, as entered in NPPES) on the Maine Board of Licensure in Medicine; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Gregory A. Leach
- Credential
- MD
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- 014595 ME
Self-reported in NPPES; status is on the state search - Practice location
- 1 Medical Center Dr, Biddeford, ME 04005
- Phone
- (207) 283-7402
- Enumerated
- Nov 1, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (207) 283-7850
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 245 in Maine → Look up another NPI →
Also registered at 1 Medical Center Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Adedeji Ademiluyi, MDHospitalist Physician1467013268
- Brendan Allison, DOHospitalist Physician1679034136
- Kate Anderson, PT, DPTGeriatric Physical Therapist1205495330
- Fernanda Asel, PA-CPhysician Assistant1235080987
- Ryan Babinsky, CRNACertified Registered Nurse Anesthetist1578055687
- Anthony Bambara, M.D.Hospitalist Physician1104205293
Verify Gregory A. Leach in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaine Board of Licensure in Medicine
Search for license 014595Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Gregory A. Leach among 245 hospitalist physician records in Maine
Gregory A. Leach, MD is one of 245 hospitalist physician records with a practice address in Maine. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 3% of them.
- NPI issued2006 · 3% of these records are older, 71% newer
- In a Medicare fileNo · 90% of these records are
- In the CMS Doctors and Clinicians fileNo · 84% of these records are
- Record last updated2007 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
18 hospitalist physician records list a practice address in Biddeford
They are 18 of the 905 NPPES records with a practice address in Biddeford, and 245 hospitalist physician records in Maine. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 245 in Maine → Every provider in Biddeford → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Adedeji Ademiluyi, MDBiddeford, ME 040051467013268
- Brendan Allison, DOBiddeford, ME 040051679034136
- Anthony Bambara, M.D.Biddeford, ME 040051104205293
- William Cullen, MDBiddeford, ME 040051679531552
- Frank Green, DOBiddeford, ME 040051316024862
- Mark Grohman, D.O.Biddeford, ME 040051538393541
- Bonnie Patrick, MDBiddeford, ME 040051992856249
- Jenna Pearson, D.O.Biddeford, ME 040051528417375
Common questions
What is Gregory A. Leach, MD's NPI number?
Gregory A. Leach, MD's National Provider Identifier (NPI) is 1538246095, issued on Nov 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory A. Leach, MD located?
The NPPES record lists a practice address at 1 Medical Center Dr, Biddeford, ME, 04005. Phone: (207) 283-7402. Providers update this record themselves, so call before visiting.
How can I verify Gregory A. Leach, MD's license?
NPPES lists Maine license number 014595, 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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.