NPPES file of Aug 9, 2026

William R. Horner, M.D.

Specialist · Bangor, ME

William R. Horner, M.D. is a specialist with a practice address in Bangor, Maine, and NPI 1942266416, issued on Apr 25, 2006. Check the license (Maine 006926, as entered in NPPES) with the Maine board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1942266416
Name
William R. Horner
Credential
M.D.
Primary taxonomy
Specialist 174400000X
License number
006926 ME
Self-reported in NPPES; status is on the state search
Practice location
417 State St, Bangor, ME 04401
Phone
(207) 947-5241
Enumerated
Apr 25, 2006
Record last updated
Jul 13, 2026
Fax
(207) 973-8880
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest specialist records → All 248 in Maine → Look up another NPI →

Also registered at 417 State St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Angela Bacchiocchi, PA-CSurgical Physician Assistant1457607244
  2. Erika Bailey, RPHPharmacist1033510318
  3. Lois Bergmans, MSN, CNMAdvanced Practice Midwife1487713012
  4. Kathleen Bernard, FNPFamily Nurse Practitioner1891902730
  5. Elizabeth Bollenbacher, DOPulmonary Disease Physician1417985508
  6. Erin BorgesSurgical Physician Assistant1992187199

Verify William R. Horner in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Maine board licenses this profession
    Search for license 006926    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Maine license search

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William R. Horner among 248 specialist records in Maine

William R. Horner, M.D. is one of 248 specialist records with a practice address in Maine. 16% 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 9% of them.

  • NPI issued2006 · 9% of these records are older, 60% newer
  • In a Medicare fileNo · 16% of these records are
  • In the CMS Doctors and Clinicians fileNo · 13% of these records are
  • Record last updated2026 · 87% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Specialist providers in Maine

There are 248 specialist records in Maine. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 248 in Maine → Every provider in Bangor → Specialist nationwide →

The 8 specialist records with the nearest ZIP codes

  1. John Bradford, M.D.Bangor, ME 044011093791964
  2. Orin Buetens, M.D.Bangor, ME 044011831115930
  3. Eric Cormier, MSPTBangor, ME 044011851347397
  4. Robert Gause, MDBangor, ME 044011861486052
  5. James Greene, MDBangor, ME 044011699769893
  6. Peter Huang, M.D.Bangor, ME 044011811953375
  7. Tracey Hughes, M.D.Bangor, ME 044011205870789
  8. Susie Marshall, MSPTBangor, ME 044011225077332

Common questions

What is William R. Horner, M.D.'s NPI number?

William R. Horner, M.D.'s National Provider Identifier (NPI) is 1942266416, issued on Apr 25, 2006. An NPI identifies a provider in billing; it is not a license.

Where is William R. Horner, M.D. located?

The NPPES record lists a practice address at 417 State St, Bangor, ME, 04401. Phone: (207) 947-5241. Providers update this record themselves, so call before visiting.

How can I verify William R. Horner, M.D.'s license?

NPPES lists Maine license number 006926, as entered by the provider. Search the Maine board that licenses this profession; the NPPES record confirms identity 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. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.