Guy Delorefice, M.D.

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

A0689180 Issued in CA

Practice address

370 Perkins St
Sonoma, CA 95476-6827

Phone

(707) 938-1255

Fax

(707) 938-2321

NPI assigned

Mar 20, 2007

Last updated

Jun 18, 2026By the provider in NPPES

Sex

Male

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in CA

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Specialty

Internal Medicine

Education

Creighton University School of Medicine, 1996

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Practice addresses (Care Compare)

Hospital & facility affiliations

• Sonoma Valley Hospital Hospital, Sonoma, CA, CCN 050090
• Providence Santa Rosa Memorial Hospital Hospital, Santa Rosa, CA, CCN 050174
• Providence Queen of the Valley Medical Center Hospital, Napa, CA, CCN 050009

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Guy Delorefice M.D. Inc.

  • Internal Medicine Physician
  • Sonoma, CA
  • NPI 1033446125
  Medicare reassignment NPD Authorized official
• Santa Rosa Trauma Physicians Medical Group

  • Trauma Surgery Physician
  • Santa Rosa, CA
  • NPI 1184673162

  Internal Medicine

  NPD (past)
• St. Joseph Health Northern California, LLC

  dba Providence Santa Rosa Memorial Hospital

  • General Acute Care Hospital
  • Santa Rosa, CA
  • NPI 1134152549
  NPD (past)
• Sutter Bay Hospitals

  • General Acute Care Hospital
  • Santa Rosa, CA
  • NPI 1740413798
  NPD (past)

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Sonoma Valley Health Care District

  dba Sonoma Valley Hospital

  • General Acute Care Hospital
  • Sonoma, CA
  • NPI 1710063870
  Care Compare affiliation
• St. Joseph Health Northern California, LLC

  dba Providence Queen of the Valley Medical Center

  • General Acute Care Hospital
  • Napa, CA
  • NPI 1013080084
  Care Compare affiliation
• St. Joseph Health Northern California, LLC

  dba Providence Santa Rosa Memorial Hospital

  • General Acute Care Hospital
  • Santa Rosa, CA
  • NPI 1134152549
  Care Compare affiliation
• St. Joseph Health Northern California, LLC

  dba Providence Queen of the Valley Medical Center

  • General Acute Care Hospital
  • Napa, CA
  • NPI 1235218785
  Care Compare affiliation

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1174348800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1781740800000",
    "number": "1952426421",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "370 PERKINS ST",
            "city": "SONOMA",
            "state": "CA",
            "postal_code": "954766827",
            "telephone_number": "707-938-1255",
            "fax_number": "707-938-2321"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "370 PERKINS ST",
            "city": "SONOMA",
            "state": "CA",
            "postal_code": "954766827",
            "telephone_number": "707-938-1255",
            "fax_number": "707-938-2321"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "DELOREFICE",
        "first_name": "GUY",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-03-20",
        "last_updated": "2026-06-18",
        "certification_date": "2026-06-18",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "A0689180",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Elizabeth Louise Davis
• De Colores Arts
• Charles Francis De Torres, M.D.
• Decipher One Medical PC
• Darice Elaine Dekker, LMFT
• William Eastment Dempsey, DDS
• Department of Health Services
• Kristin Devincenzi, DDS
• Yarigtnetzilem Diez Gonzalez, O.D.
• Cleo Dillon

• Internal Medicine Physician in Sonoma, CA
• Providers in Sonoma, CA by specialty
• Internal Medicine Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 18, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.