Quick answers
- Which hospitals does Guy Delorefice work at?
- Medicare's official clinician data lists Guy Delorefice at 3 hospitals: Providence Queen of the Valley Medical Center, Providence Santa Rosa Memorial Hospital and Sonoma Valley Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Guy Delorefice see patients?
- Medicare's clinician data lists 1 practice location in Sonoma, CA. Call before your visit to confirm the address.
- What is Guy Delorefice's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Guy Delorefice accept Medicare assignment?
- Yes. Medicare's clinician data says Guy Delorefice 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.
- Does Guy Delorefice offer telehealth?
- Medicare's clinician data says Guy Delorefice offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Guy Delorefice?
- (707) 938-1255, as listed in official Medicare / NPI Registry data.
- What is Guy Delorefice's NPI number?
- 1952426421. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Guy Delorefice works
Medicare's Facility Affiliation Data lists Guy Delorefice at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Providence Queen of the Valley Medical CenterNapa, CA · Acute Care Hospital · CCN 050009
- Providence Santa Rosa Memorial HospitalSanta Rosa, CA · Acute Care Hospital · CCN 050174
- Sonoma Valley HospitalSonoma, CA · Acute Care Hospital · CCN 050090
Practice locations
Addresses where Guy Delorefice is enrolled with Medicare (CMS data updated 2026-10-02).
- 370 Perkins StSonoma, CA 95476 (707) 938‑1255
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Sonoma
Clinicians with the same Medicare primary specialty in Sonoma, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Creighton University School Of Medicine |
| Graduation year | 1996 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1952426421 |
| 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