Quick answers
- Which hospitals does Michael D. Maggioncalda work at?
- Medicare's official clinician data lists Michael D. Maggioncalda at 1 hospital: Sonoma Valley Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Michael D. Maggioncalda see patients?
- Medicare's clinician data lists 1 practice location in Sonoma, CA. Call before your visit to confirm the address.
- What is Michael D. Maggioncalda's specialty?
- Medicare lists Family Practice as the primary specialty, and also Osteopathic Manipulative Medicine.
- Does Michael D. Maggioncalda accept Medicare assignment?
- Medicare's clinician data says Michael D. Maggioncalda may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is the phone number for Michael D. Maggioncalda?
- (707) 939-6070, as listed in official Medicare / NPI Registry data.
- What is Michael D. Maggioncalda's NPI number?
- 1043394042. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Michael D. Maggioncalda works
Medicare's Facility Affiliation Data lists Michael D. Maggioncalda at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Sonoma Valley HospitalSonoma, CA · Acute Care Hospital · CCN 050090
Practice locations
Addresses where Michael D. Maggioncalda is enrolled with Medicare (CMS data updated 2026-10-02).
- 19270 Hwy 12Sonoma, CA 95476 (707) 939‑6070
Group practices
Medicare enrollment lists Michael D. Maggioncalda as a member of this group (CMS data updated 2026-10-02).
- Sonoma Valley Community Health Center20 clinicians in the group
Specialties
Other family doctors in Sonoma
Clinicians with the same Medicare primary specialty in Sonoma, CA — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Philadelphia College Of Osteopathic Medicine |
| Graduation year | 1990 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1043394042 |
| 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