NPPES file of Aug 9, 2026

Robert I. Mosenfelder, MD

Obstetrics & Gynecology Physician · Houlton, ME

Robert I. Mosenfelder, MD is an obstetrics & gynecology physician with a practice address in Houlton, Maine, and NPI 1871688812, issued on Oct 4, 2006. Check the license (Maine MD12156, as entered in NPPES) on the Maine Board of Licensure in Medicine; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1871688812
Name
Robert I. Mosenfelder
Credential
MD
Primary taxonomy
Obstetrics & Gynecology Physician 207V00000X
License number
MD12156 ME
Self-reported in NPPES; status is on the state search
Practice location
22 Hartford St, Houlton, ME 04730
Phone
(207) 532-4017
Enumerated
Oct 4, 2006
Record last updated
Jun 2, 2017 (not updated in 9 years: call before relying on the address or phone)
Fax
(207) 532-4019
Medicaid ID
117260000 ME
Medicare enrollment
Enrolled (PECOS I20050722000047); accepts Medicare assignment
Medical or professional school
University Of Michigan Medical School, 1976
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 22 Hartford St

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

  1. Hassan Abouleish, MDInternal Medicine Physician1255300307
  2. Lee Bland, PA-CPhysician Assistant1831284918
  3. Matthew Cowan, PAMedical Physician Assistant1437185337
  4. Joseph Fahey, M.D.Pediatrics Physician1326227588
  5. Chester Husted, M.D.Specialist1538161476
  6. Kaitlin Koppel, MSN, FNP-CFamily Nurse Practitioner1023622560

Verify Robert I. Mosenfelder in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMaine Board of Licensure in Medicine
    Search for license MD12156
    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
Open the Maine license search

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66% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024

56 Medicare Part D claims for 25 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of claims.

  1. Robert Mosenfelder56
  2. Specialty average165

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.

One hospital affiliation

  1. Houlton Regional HospitalHoulton, ME · Critical Access Hospitals3 of 5 stars

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.

Robert I. Mosenfelder among 205 obstetrics & gynecology physician records in Maine

Robert I. Mosenfelder, MD is one of 205 obstetrics & gynecology physician records with a practice address in Maine. 70% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 11% of them.

  • NPI issued2006 · 11% of these records are older, 47% newer
  • In a Medicare fileYes · 70% of these records are
  • In the CMS Doctors and Clinicians fileYes · 58% of these records are
  • Graduated1976 · median 2007 among the 119 with a school on file
  • Record last updated2017 · 55% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Obstetrics & Gynecology Physician providers in Maine

There are 205 obstetrics & gynecology physician records in Maine.

The 8 obstetrics & gynecology physician records with the nearest ZIP codes

  1. Kimberly Mays De Perez, M.D.Houlton, ME 047301255531604
  2. Regen Gallagher, DOCaribou, ME 047361689682445
  3. Brian Wall, M.D.Caribou, ME 047361902874001
  4. Anne Soucy, MDFort Fairfield, ME 047421578659298
  5. Paul McBreairty, MDFort Kent, ME 047431326150467
  6. Ellen Michalowski, MDFort Kent, ME 047431548286156
  7. Joyce Hebert, MDPresque Isle, ME 047691871512657
  8. John Langley, MDPresque Isle, ME 047691275553984

Common questions

What is Robert I. Mosenfelder, MD's NPI number?

Robert I. Mosenfelder, MD's National Provider Identifier (NPI) is 1871688812, issued on Oct 4, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Robert I. Mosenfelder, MD located?

The NPPES record lists a practice address at 22 Hartford St, Houlton, ME, 04730. Phone: (207) 532-4017. Providers update this record themselves, so call before visiting.

How can I verify Robert I. Mosenfelder, MD's license?

NPPES lists Maine license number MD12156, 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 Robert I. Mosenfelder, MD prescribe under Medicare Part D?

In 2024, Robert I. Mosenfelder, MD had 56 Medicare Part D claims for 25 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. 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.