NPIMap

Individual provider Active NPI

Gene-Anne Holtzman, NP

  • Nurse Practitioner
  • Stanford, CA
National Provider Identifier
1750650289
Registry record updated Sep 10, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Nurse PractitionerTaxonomy code 363L00000X
License
19966 Issued in CA
Practice address
300 Pasteur Dr
Stanford, CA 94305-2200
Phone
(650) 723-4000
NPI assigned
Dec 29, 2011
Sex
Female
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Sep 10, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Gerontology Nurse Practitioner 363LG0600X AP60252121 WA
Nurse Practitioner 363L00000X 19966 CA Primary

Addresses

Primary practice location

300 Pasteur Dr
Stanford, CA 94305-2200

Mailing address

300 Pasteur Dr
Stanford, CA 94305-2200
Phone (650) 723-4000

Other practice location 1

1221 Madison St
#1220
Seattle, WA 98104-3588
Phone (206) 215-4250

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20250509000633 CA Practitioner - Nurse Practitioner 6204098551 Reassigns benefits to 4 organizations

Care Compare profile

Medicare Care Compare
Specialty
Nurse Practitioner
Education
Other, 2010
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
County of San MateoGroup PAC ID 9032023171, shared by 15 NPIs, 316 clinicians
Stanford Health CareGroup PAC ID 6709797491, 3,152 clinicians

Practice addresses (Care Compare)

22 W 39TH Ave
San Mateo, CA 94403-4364

222 W 39TH Ave
San Mateo, CA 94403-4364

300 Pasteur Dr
Stanford, CA 94305-2200
Phone (650) 723-4000

Hospital & facility affiliations

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
19966CAMDProfessional Counselor

Practice roles

OrganizationSpecialtyStatusNew patients
Stanford Health Care Current Accepting new patients
Stanford Health Care CurrentSince Jul 11, 2025 Accepting new patients
County of San Mateo CurrentSince Jan 15, 2025 Accepting new patients
County of San Mateo Current Accepting new patients
Stanford Health Care CurrentSince Jul 11, 2025 Accepting new patients
County of San Mateo CurrentSince Jan 15, 2025 Accepting new patients
LPCH Medical Group Div of Lucile CurrentSince Jul 11, 2025 Accepting new patients
County of San Mateo CurrentSince Jan 15, 2025 Accepting new patients

Locations

725 Welch Rd
Palo Alto, CA 94304
Phone (650) 497-8979

222 W 39th Ave
San Mateo, CA 94403
Phone (415) 573-2222

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

Interoperability endpoints

  • Direct secure messaging: gholtzmann253725@direct.stanfordhealthcare.org
  • Direct secure messaging: gholtzman25515@smch.direct-ci.com

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.

Hospital & facility affiliations 15

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

View all 15

NPI Registry JSON

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

{
    "created_epoch": "1325116800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757462400000",
    "number": "1750650289",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "300 PASTEUR DR",
            "city": "STANFORD",
            "state": "CA",
            "postal_code": "943052200",
            "telephone_number": "650-723-4000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "300 PASTEUR DR",
            "city": "STANFORD",
            "state": "CA",
            "postal_code": "943052200",
            "telephone_number": "650-723-4000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1221 Madison St",
            "address_2": "#1220",
            "address_purpose": "LOCATION",
            "city": "Seattle",
            "state": "WA",
            "postal_code": "981043588",
            "country_code": "US",
            "telephone_number": "206-215-4250",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "HOLTZMAN",
        "first_name": "GENE-ANNE",
        "credential": "NP",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2011-12-29",
        "last_updated": "2025-09-10",
        "certification_date": "2025-09-10",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LG0600X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Gerontology",
            "state": "WA",
            "license": "AP60252121",
            "primary": false
        },
        {
            "code": "363L00000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner",
            "state": "CA",
            "license": "19966",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Stanford, CA

Sources for this page

Verify at the official NPI Registry.