Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Emergency Medicine

Duncan Thomas, MD

Works at hospitals in Dededo, GU · Guam

Summary

Duncan Thomas, MD (Emergency Medicine) is listed by Medicare at 1 hospital in Dededo, GU. NPI 1568948610. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Duncan Thomas, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Emergency MedicinePrimary specialty
YesAccepts Medicare assignment
13Years since medical school (graduated 2013)
MaleGender (as listed)
Guam Healthcare Development IncorporatedGroup practice

Quick answers

Which hospitals does Duncan Thomas work at?
Medicare's official clinician data lists Duncan Thomas at 1 hospital: Guam Regional Medical City. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Duncan Thomas see patients?
Medicare's clinician data lists 1 practice location in Dededo, GU. Call before your visit to confirm the address.
What is Duncan Thomas's specialty?
Medicare lists Emergency Medicine as the primary specialty.
Does Duncan Thomas accept Medicare assignment?
Yes. Medicare's clinician data says Duncan Thomas accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
What is the phone number for Duncan Thomas?
(671) 645-5500, as listed in official Medicare / NPI Registry data.
What is Duncan Thomas's NPI number?
1568948610. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Duncan Thomas works

Medicare's Facility Affiliation Data lists Duncan Thomas at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Duncan Thomas is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Duncan Thomas as a member of this group (CMS data updated 2026-10-02).

  • Guam Healthcare Development Incorporated207 clinicians in the group

Specialties

Find other Emergency Medicine doctors in Guam →

Other emergency medicine doctors in Dededo

Clinicians with the same Medicare primary specialty in Dededo, GU — not a recommendation.

All emergency medicine doctors in Dededo →

Clinician information

CredentialMD
Graduation year2013
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1568948610
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 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians