1. Home
  2. Directory
  3. Maine
  4. Bangor
  5. Specialist
  6. NPI Profile
Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

WILLIAM R HORNER M.D.
NPI 1942266416
Specialist in Bangor, ME

Active since April 25, 2006
417 STATE ST, SUITE 330, BANGOR, ME 04401(207) 947-5241(207) 973-8880 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About William R Horner M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

WILLIAM R HORNER M.D. (NPI 1942266416) is an individual specialist in Bangor, Maine, licensed in Maine (006926) and active in the NPI registry since April 2006.

NPPES Registry Identity

NPI1942266416
Entity TypeIndividualMale
Primary Taxonomy174400000X
Provider Legal NameWILLIAM R HORNERCredential: M.D.
Location Address417 STATE ST, SUITE 330Bangor, ME 04401-6630
Mailing Address417 State St, Suite 330Bangor, ME 04401-6630 · (207) 947-5241 · Fax (207) 973-8880
Phone(207) 947-5241
Fax(207) 973-8880
Sole ProprietorNo
Enumeration DateApril 25, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1942266416 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialistOther Service Providers
Taxonomy Code174400000X
License✔ Licensed in ME · 006926
Definition
An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.
417 STATE ST, Bangor, ME 04401
Open in Google Maps ↗

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. AMANDA GAIL QUERRY D.O.
Obstetrics & Gynecology
417 STATE ST, WEBBER WEST, SUITE 141
BANGOR, ME 04401
Penobscot County (207) 973-4670
MURRAY DANA LEBOWITZ M.D.
Obstetrics & Gynecology
417 STATE ST, WEBBER WEST SUITE 141
BANGOR, ME 04401
Penobscot County (207) 973-4670
CHUNG HO SHUM M.D., PH.D.
Pathology (Anatomic Pathology & Clinical Pathology)
417 STATE ST, WEBBER WEST 541
BANGOR, ME 04401
Penobscot County (207) 941-8200
MS. ERIKA LYNN BAILEY RPH
Pharmacist
417 STATE ST, SUITE 130
BANGOR, ME 04401
Penobscot County (207) 973-8888
TIMOTHY UNGER
Orthopaedic Surgery (Orthopaedic Trauma)
417 STATE ST
BANGOR, ME 04401
Penobscot County (207) 973-4949
KOBE MALIK HAMBY PA-C
Physician Assistant
417 STATE ST
BANGOR, ME 04401
Penobscot County (207) 973-9949
THOMAS RAJAN MD
Internal Medicine (Pulmonary Disease)
417 STATE ST, STE 400
BANGOR, ME 04401
Penobscot County (207) 973-8852
DR. FLAVIAN MARK LUPINETTI M.D.
Thoracic Surgery (Cardiothoracic Vascular Surgery)
417 STATE ST, SUITE 421
BANGOR, ME 04401
Penobscot County (207) 973-5293

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is William Horner's NPI number?

The NPI number for William Horner is 1942266416. It was assigned to this individual provider in the NPPES registry on April 25, 2006.

Where is William Horner located?

William Horner practices at 417 State St Suite 330, Bangor, ME 04401. The listed phone number is (207) 947-5241.

What is William Horner's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

When was this NPI record last updated?

The NPPES record for William Horner was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 37 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.