Quick answers
- Which hospitals does William Munion work at?
- Medicare's official clinician data lists William Munion at 2 hospitals: Dignity Health - Arizona General Hospital and Petaluma Valley Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does William Munion see patients?
- Medicare's clinician data lists 4 practice locations, including Healdsburg, CA, Petaluma, CA and Laveen, AZ. Call before your visit to confirm the address.
- What is William Munion's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does William Munion accept Medicare assignment?
- Yes. Medicare's clinician data says William Munion 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 William Munion?
- (707) 431-6500, as listed in official Medicare / NPI Registry data.
- What is William Munion's NPI number?
- 1255829784. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where William Munion works
Medicare's Facility Affiliation Data lists William Munion at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Dignity Health - Arizona General HospitalLaveen, AZ · Acute Care Hospital · CCN 030136
- Petaluma Valley HospitalPetaluma, CA · Acute Care Hospital · CCN 050136
Practice locations
Addresses where William Munion is enrolled with Medicare (CMS data updated 2026-10-02).
- 1375 University StHealdsburg, CA 95448 (707) 431‑6500
- 400 N McDowell BlvdPetaluma, CA 94954 (707) 935‑5000
- 7171 S 51st AveLaveen, AZ 85339 (888) 732‑3317
- 9130 E Elliot RdMesa, AZ 85212 (888) 732‑3317
Group practices
Medicare enrollment lists William Munion as a member of these groups (CMS data updated 2026-10-02).
- Tec Emergency Physicians of Arizona, LLC153 clinicians in the group
- Sonoma Valley Emergency Physicians Medical Group, Inc6 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Healdsburg
Clinicians with the same Medicare primary specialty in Healdsburg, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Arizona College Of Medicine |
| Graduation year | 2018 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1255829784 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- 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