Heidi Natalie McMillin, FNP-C

Primary specialty

Family Nurse PractitionerTaxonomy code 363LF0000X

License

95035813 Issued in CA

Practice address

1040 Mangrove Ave
Chico, CA 95926-3509

Phone

(530) 345-0064

Fax

(855) 859-5485

NPI assigned

Sep 3, 2020

Last updated

Jun 22, 2026By the provider in NPPES

Sex

Female

Sole proprietor

No

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

Specialties & licenses 2

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

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Mangrove Medical GroupGroup PAC ID 0143260687, 10 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Butte Home Health and Hospice Home health agency, Chico, CA, CCN 057679
• Oroville Hospital Hospital, Oroville, CA, CCN 050030
• Enloe Health Hospital, Chico, CA, CCN 050039
• Adventist Health Clearlake Hospital, Clearlake, CA, CCN 051317

Medicare enrollment (NPD)

Enrolled

Credentials

Nurse Practitioner

State licenses

Interoperability endpoints

• Direct secure messaging: heidi.mcmillin.1@15385.direct.athenahealth.com

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.

• Mangrove Medical Group

  • Family Medicine Physician
  • Chico, CA
  • NPI 1326038381
  Medicare reassignment Care Compare group

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

• Adventist Health Clearlake Hospital Inc.

  dba Adventist Health Clear Lake

  • Critical Access Hospital
  • Clearlake, CA
  • NPI 1124018031
  Care Compare affiliation
• Butte Home Health Inc.

  • Home Health Agency
  • Chico, CA
  • NPI 1568492700
  Care Compare affiliation
• Enloe Medical Center

  • General Acute Care Hospital
  • Chico, CA
  • NPI 1417901091
  Care Compare affiliation
• Oroville Hospital

  • General Acute Care Hospital
  • Oroville, CA
  • NPI 1871606269
  Care Compare affiliation

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

{
    "created_epoch": "1599091200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1782086400000",
    "number": "1750995924",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1040 MANGROVE AVE",
            "city": "CHICO",
            "state": "CA",
            "postal_code": "959263509",
            "telephone_number": "530-345-0064",
            "fax_number": "530-345-0680"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1040 MANGROVE AVE",
            "city": "CHICO",
            "state": "CA",
            "postal_code": "959263509",
            "telephone_number": "530-345-0064",
            "fax_number": "855-859-5485"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MCMILLIN",
        "first_name": "HEIDI",
        "middle_name": "NATALIE",
        "credential": "FNP-C",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2020-09-03",
        "last_updated": "2026-06-22",
        "certification_date": "2026-06-22",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "CA",
            "license": "95035813",
            "primary": true
        },
        {
            "code": "163W00000X",
            "taxonomy_group": "",
            "desc": "Registered Nurse",
            "state": "CA",
            "license": "95189202",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Matt McLaughlin, MFT, LEP
• Morgan McLaughlin
• Martha Andrade McLemore, LCSW
• Leah Anne McMahon-Pierce, CNM
• Ann McMahon
• Samantha Chez Babcock McMullen, LMFT
• McNamar Residential
• Lauren McNamara, MS, RDN
• Corey McNamee, M.D.
• Kristi McNanie

• Family Nurse Practitioner in Chico, CA
• Providers in Chico, 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 Jun 22, 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.