John D. Gage, M.D.
Emergency Medicine Physician · Belfast, ME
John D. Gage, M.D. is an emergency medicine physician with a practice address in Belfast, Maine, and NPI 1508921461, issued on Dec 22, 2006. Check the license (Maine 010651, 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
- John D. Gage
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 010651 ME
Self-reported in NPPES; status is on the state search - Practice location
- 118 Northport Ave, Belfast, ME 04915
- Phone
- (207) 338-2500
- Enumerated
- Dec 22, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (207) 338-9380
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 466 in Maine → Look up another NPI →
Also registered at 118 Northport Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Michael Barnes Lopez, M.A.Audiologist1477717304
Verify John D. Gage in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaine Board of Licensure in Medicine
Search for license 010651Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
John D. Gage among 466 emergency medicine physician records in Maine
John D. Gage, M.D. is one of 466 emergency medicine physician records with a practice address in Maine. 80% 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 2% of them.
- NPI issued2006 · 2% of these records are older, 62% newer
- In a Medicare fileNo · 80% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2007 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
5 emergency medicine physician records list a practice address in Belfast
They are 5 of the 393 NPPES records with a practice address in Belfast, and 466 emergency medicine physician records in Maine. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 466 in Maine → Every provider in Belfast → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Daniel Britton, MDBelfast, ME 049151902971294
- Camille Canova, M.D.Belfast, ME 049151124195102
- Douglas Clark, M.D.Belfast, ME 049151295801496
- Elmo Tucker, MDBelfast, ME 049151164402053
- Deep Acharya, M.D.Waterville, ME 049011427242940
- Michael Antoniello, M.D.Waterville, ME 049011568470953
- Sally Chapin, MDWaterville, ME 049011316906852
- Barbara Covey, MDWaterville, ME 049011710948138
Common questions
What is John D. Gage, M.D.'s NPI number?
John D. Gage, M.D.'s National Provider Identifier (NPI) is 1508921461, issued on Dec 22, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John D. Gage, M.D. located?
The NPPES record lists a practice address at 118 Northport Ave, Belfast, ME, 04915. Phone: (207) 338-2500. Providers update this record themselves, so call before visiting.
How can I verify John D. Gage, M.D.'s license?
NPPES lists Maine license number 010651, 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.