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Psychiatry

Allan Giesen, DO

Works at hospitals in Fall River, MA · Massachusetts

Summary

Dr. Allan Giesen, DO is a psychiatrist at 581 Faunce Corner Rd, Dartmouth, MA 02747. Phone: (508) 207-9800. May accept Medicare assignment. NPI 1538263991. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026.

  • Specialty: Psychiatrist (Medicare lists Psychiatry)
  • Address: 581 Faunce Corner Rd, Dartmouth, MA 02747 · Directions
  • Phone: (508) 207‑9800
  • Medicare: May accept Medicare assignment
  • Hospital: Southcoast Hospitals Group
  • Group practice: Northeast Behavioral Health LLC
  • Medical school: University Of New England, College Of Osteo Medicine · graduated 1994 (32 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Allan Giesen, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Allan Giesen accept Medicare assignment?
Medicare's clinician data says Allan Giesen may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
What is Allan Giesen's NPI number?
1538263991. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Allan Giesen works

Medicare's Facility Affiliation Data lists Allan Giesen at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Allan Giesen is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Allan Giesen as a member of this group (CMS data updated October 2, 2026).

  • Northeast Behavioral Health LLC17 clinicians in the group

Specialties

Find other Psychiatry doctors in Massachusetts →

Other psychiatrists in Dartmouth

Clinicians with the same Medicare primary specialty in Dartmouth, MA — not a recommendation.

All psychiatrists in Dartmouth →

Other clinicians in Northeast Behavioral Health LLC

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialDO
Medical schoolUniversity Of New England, College Of Osteo Medicine
Graduation year1994 (32 years since medical school)
Gender (as listed)Male
Medicare assignmentMay accept for some services
NPI (National Provider Identifier)1538263991
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  5. Medicare Care Compare — official Medicare tool to look up clinicians