Guy Delorefice M.D. Inc.
NPI 1033446125 · Internal Medicine Physician · Sonoma, CA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Guy Delorefice M.D. Inc. is a Internal Medicine Physician organization in Sonoma, CA (NPI 1033446125).
Provider details
- NPI number
- 1033446125
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Guy Delorefice, Officer(707) 938-1255
- License
- A0689180 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
16 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-11-10
- Last updated
- 2018-12-04
Frequently asked questions
- What is Guy Delorefice M.D. Inc.'s NPI number?
- Guy Delorefice M.D. Inc.'s National Provider Identifier (NPI) is 1033446125, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Guy Delorefice M.D. Inc.?
- Guy Delorefice M.D. Inc. is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Guy Delorefice M.D. Inc. located?
- Guy Delorefice M.D. Inc.'s practice location on file with NPPES is 370 Perkins St, Sonoma, CA 95476-6827.
- What is Guy Delorefice M.D. Inc.'s phone number?
- The practice phone number listed in the NPPES registry for Guy Delorefice M.D. Inc. is (707) 938-1255.
- Does Guy Delorefice M.D. Inc. accept Medicare?
- Guy Delorefice M.D. Inc. is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Guy Delorefice M.D. Inc.?
- The authorized official listed on Guy Delorefice M.D. Inc.'s NPPES record is Guy Delorefice, Officer. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Guy Delorefice M.D. Inc.'s NPI active?
- Yes — Guy Delorefice M.D. Inc.'s NPI (1033446125) is active in the NPPES registry as of the last update on 2018-12-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.