Individual provider Active NPI

Melissa Gaines Wilson, CPNP-AC

  • Nurse Practitioner
  • San Francisco, CA
National Provider Identifier
1427873223
Registry record updated Dec 8, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Nurse PractitionerTaxonomy code 363L00000X
License
95025878 Issued in CA
Practice address
1825 4TH St FL 6
San Francisco, CA 94143-2350
Phone
(415) 476-9168
Fax
(415) 502-4372
NPI assigned
Nov 18, 2024
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Dec 8, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Nurse Practitioner 363L00000X 95025878 CA Primary
Registered Nurse 163W00000X 95112877 CA

Addresses

Primary practice location

1825 4TH St FL 6
San Francisco, CA 94143-2350

Mailing address

238 Putnam St
San Francisco, CA 94110-6223
Phone (209) 595-9558

Other practice location 1

725 Welch Rd
Palo Alto, CA 94304-1601
Phone (650) 497-8000

Other names 1

  • Melissa Emily Gaines Other name

Medicare participation

Medicare enrollment files
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

Enrollment IDStateProvider typePAC IDDetails
I20241220001595 CA Practitioner - Nurse Practitioner 2264969880 Reassigns benefits to 4 organizations

Care Compare profile

Medicare Care Compare
Specialty
Nurse Practitioner
Education
University of California, San Francisco School of Medicine, 2023
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
UCSF Medical Group Business ServicesGroup PAC ID 3779497870, 1,533 clinicians

Practice addresses (Care Compare)

400 Parnassus Ave
San Francisco, CA 94143-2202

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Nurse Practitioner

State licenses

LicenseStateTypeSpecialty
95025878CAMDPrimary Care Nurse Practitioner

Practice roles

OrganizationSpecialtyStatusNew patients
UCSF Dept of Surgery CurrentSince Dec 8, 2025 Accepting new patients
University of California San Francisco CurrentSince Dec 8, 2025 Accepting new patients
UCSF Medical Group Business Services CurrentSince Dec 8, 2025 Accepting new patients
University of California San Francisco CurrentSince Dec 8, 2025 Accepting new patients
UCSF Pediatrics Associates CurrentSince Dec 8, 2025 Accepting new patients
UCSF Medical Group Business Services Nurse Practitioner CurrentSince Dec 8, 2025 Accepting new patients
Stanford Health Care Current Accepting new patients

Locations

400 Parnassus Ave
#A632
San Francisco, CA 94143
Phone (415) 473-1000

1825 4th St
Fl 6
San Francisco, CA 94143
Phone (415) 353-7337

505 Parnassus Ave
San Francisco, CA 94143
Phone (415) 476-9058

2330 Post St
San Francisco, CA 94115
Phone (415) 502-4444

300 Pasteur Dr
Stanford, CA 94305
Phone (650) 498-5710

Organizations & group practices 8

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.

NPI Registry JSON

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

{
    "created_epoch": "1731888000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1765152000000",
    "number": "1427873223",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "238 PUTNAM ST",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941106223",
            "telephone_number": "209-595-9558"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1825 4TH ST FL 6",
            "city": "SAN FRANCISCO",
            "state": "CA",
            "postal_code": "941432350",
            "telephone_number": "415-476-9168",
            "fax_number": "415-502-4372"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "725 Welch Rd",
            "address_purpose": "LOCATION",
            "city": "Palo Alto",
            "state": "CA",
            "postal_code": "943041601",
            "country_code": "US",
            "telephone_number": "650-497-8000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "WILSON",
        "first_name": "MELISSA",
        "middle_name": "GAINES",
        "name_prefix": "Mrs.",
        "credential": "CPNP-AC",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2024-11-18",
        "last_updated": "2025-12-08",
        "certification_date": "2025-12-08",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363L00000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner",
            "state": "CA",
            "license": "95025878",
            "primary": true
        },
        {
            "code": "163W00000X",
            "taxonomy_group": "",
            "desc": "Registered Nurse",
            "state": "CA",
            "license": "95112877",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "MELISSA",
            "last_name": "GAINES",
            "middle_name": "EMILY",
            "code": "5",
            "type": "Other Name"
        }
    ]
}

Other providers in San Francisco, CA

Sources for this page

Verify at the official NPI Registry.