Callaghan Joseph Gillis, MD
Family Medicine Physician · Bangor, ME
Callaghan Joseph Gillis, MD is a family medicine physician with a practice address in Bangor, Maine, and NPI 1013534312, issued on Jul 2, 2020. Check the license (Maine MD23935, as entered in NPPES) on the Maine Board of Licensure in Medicine; the Medicare figures below come from public CMS files.
- Name
- Callaghan Joseph Gillis
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- MD23935 ME
Self-reported in NPPES; status is on the state search - Practice location
- 895 Union St Ste 12, Bangor, ME 04401
- Phone
- (207) 973-7979
- Enumerated
- Jul 2, 2020
- Record last updated
- Jul 10, 2023
- Fax
- (207) 947-9579
- Medicare enrollment
- Enrolled (PECOS I20230718001123); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 1,172 in Maine → Look up another NPI →
Also registered at 895 Union St Ste 12
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Callaghan Joseph Gillis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaine Board of Licensure in Medicine
Search for license MD23935Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average family medicine physician in 2024
404 Medicare Part D claims for 164 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 12 claims were for opioids.
Most prescribed
- Eliquis25 claims
- Metoprolol Succinate23 claims
- Furosemide20 claims
- Pantoprazole Sodium18 claims
- Clopidogrel16 claims
- Amoxicillin-Clavulanate Potass15 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
- Eastern Maine Medical CenterBangor, ME
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Callaghan Joseph Gillis among 1,172 family medicine physician records in Maine
Callaghan Joseph Gillis, MD is one of 1,172 family medicine physician records with a practice address in Maine. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 88% of them.
- NPI issued2020 · 88% of these records are older, 9% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2015 · median 2008 among the 668 with a school on file
- Record last updated2023 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
81 family medicine physician records list a practice address in Bangor
They are 81 of the 3,103 NPPES records with a practice address in Bangor, and 1,172 family medicine physician records in Maine.
All 1,172 in Maine → Every provider in Bangor → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- James Berry, M.D.Bangor, ME 044011013957141
- Jessica Bloom-Foster, MDBangor, ME 044011396734182
- Kathryn Bourgoin, MDBangor, ME 044011518914233
- Jeffery Bowers, MDBangor, ME 044011013958552
- Eric Brown, M.D.Bangor, ME 044011811937964
- Alexandra Craig, MDBangor, ME 044011063480200
- Tasha Hofmann, DOBangor, ME 044011942260492
- Ann Holland, MDBangor, ME 044011619957966
Common questions
What is Callaghan Joseph Gillis, MD's NPI number?
Callaghan Joseph Gillis, MD's National Provider Identifier (NPI) is 1013534312, issued on Jul 2, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Callaghan Joseph Gillis, MD located?
The NPPES record lists a practice address at 895 Union St Ste 12, Bangor, ME, 04401. Phone: (207) 973-7979. Providers update this record themselves, so call before visiting.
How can I verify Callaghan Joseph Gillis, MD's license?
NPPES lists Maine license number MD23935, 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.
How much does Callaghan Joseph Gillis, MD prescribe under Medicare Part D?
In 2024, Callaghan Joseph Gillis, MD had 404 Medicare Part D claims for 164 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.