Olivia Dempster

Primary specialty

Family Nurse PractitionerTaxonomy code 363LF0000X

License

95035827 Issued in CA

Practice address

1222 Pine St Ste a
Saint Helena, CA 94574-1830

Phone

(866) 268-4489

Fax

(707) 259-1779

NPI assigned

Jul 30, 2025

Sex

Female

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: No

Green means eligible to order or refer.

Enrollment records 1

Specialty

Nurse Practitioner

Education

Other, 2025

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

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 and National Provider Directory roles.

• Ole Health

  • Federally Qualified Health Center (FQHC)
  • Napa, CA
  • NPI 1700976503
  Medicare reassignment
• Ole Health

  • Federally Qualified Health Center (FQHC)
  • Fairfield, CA
  • NPI 1245043165
  NPD
• Ole Health

  • Federally Qualified Health Center (FQHC)
  • Napa, CA
  • NPI 1609170695
  NPD

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

{
    "created_epoch": "1753833600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1773619200000",
    "number": "1265315618",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "195 41ST ST UNIT 11321",
            "city": "OAKLAND",
            "state": "CA",
            "postal_code": "946117012",
            "telephone_number": "707-968-7645"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1222 PINE ST STE A",
            "city": "SAINT HELENA",
            "state": "CA",
            "postal_code": "945741830",
            "telephone_number": "866-268-4489",
            "fax_number": "707-259-1779"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "DEMPSTER",
        "first_name": "OLIVIA",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2025-07-30",
        "last_updated": "2026-03-16",
        "certification_date": "2026-03-16",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "CA",
            "license": "95035827",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Darleen H Hemerlin DDS Inc
• Janessa Daugherty
• DDX Medical Corporation
• Fidel Delgadillo, DDS
• Pauline Demetrakopulos, D.D.S.
• Jennifer L Dietrich, MD
• Monica S Divakaruni, MD
• Amanda Doherty, MD
• Holly Anne Dowling, MFT
• Timothy F Dowling, DO

• Family Nurse Practitioner in Saint Helena, CA
• Providers in Saint Helena, CA by specialty
• Family Nurse Practitioner in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 16, 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.