Quick answers
- Where does Duncan J. Williams see patients?
- Medicare's clinician data lists 1 practice location in Lake Havasu City, AZ. Call before your visit to confirm the address.
- What is Duncan J. Williams's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does Duncan J. Williams accept Medicare assignment?
- Yes. Medicare's clinician data says Duncan J. Williams 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 J. Williams?
- (928) 855-8185, as listed in official Medicare / NPI Registry data.
- What is Duncan J. Williams's NPI number?
- 1225730781. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Duncan J. Williams is enrolled with Medicare (CMS data updated 2026-10-02).
- 101 Civic Ctr LnLake Havasu City, AZ 86403 (928) 855‑8185
Group practices
Medicare enrollment lists Duncan J. Williams as a member of this group (CMS data updated 2026-10-02).
- Emergency Physicians Southwest PC98 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Lake Havasu City
Clinicians with the same Medicare primary specialty in Lake Havasu City, AZ — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Arizona College Of Osteopathic Medicine Mid Western University |
| Graduation year | 2023 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1225730781 |
| Corrections | Report 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
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians