NPIMap

Individual provider Active NPI

Ariel Takayanagi, DO

  • Neurological Surgery Physician
  • Stanford, CA
National Provider Identifier
1023501582
Registry record updated Jul 21, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Neurological Surgery PhysicianTaxonomy code 207T00000X
License
20A17764 Issued in CA
Practice address
300 Pasteur Dr
Stanford, CA 94305-2200
Phone
(650) 721-6295
NPI assigned
Jun 10, 2018
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 21, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Neurological Surgery Physician 207T00000X 20A17764 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

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
I20250513003437 CA Practitioner - Neurosurgery 1456879535 Reassigns benefits to 3 organizations

Care Compare profile

Medicare Care Compare
Specialty
Neurosurgery
Education
Touro Un College of Osteopathic Medicine, Vallejo, 2018
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Stanford Health CareGroup PAC ID 6709797491, 3,152 clinicians
County of Santa ClaraGroup PAC ID 1254244973, 1,000 clinicians

Practice addresses (Care Compare)

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

751 S Bascom Ave
San Jose, CA 95128-2604

Hospital & facility affiliations

Procedures performed for Medicare patients

ProcedureNumber of procedures
Spinal fusion137
Laminectomy or laminotomy (partial removal of spine bones)41

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Osteopathy

State licenses

LicenseStateTypeSpecialty
20A17764CAMDNeurological Surgery Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Stanford Health Care Neurological Surgery CurrentSince Jul 1, 2025 Accepting new patients
Stanford Health Care CurrentSince Jul 1, 2025 Accepting new patients
County of Santa Clara CurrentSince Jul 1, 2025 Accepting new patients
County of Santa Clara CurrentSince Jul 1, 2025 Accepting new patients
County of Santa Clara Current Accepting new patients
LPCH Medical Group Div of Lucile CurrentSince Jul 1, 2025 Accepting new patients
Stanford Health Care Neurological Surgery Current Accepting new patients

Locations

7475 Camino Arroyo
Gilroy, CA 95020
Phone (408) 852-2400

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

1993 McKee Rd
San Jose, CA 95116
Phone (408) 254-6320

751 S Bascom Ave
San Jose, CA 95128
Phone (408) 885-5110

750 S Bascom Ave
San Jose, CA 95128
Phone (408) 885-2320

500 Tully Rd
San Jose, CA 95111
Phone (408) 817-1433

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

660 S Fair Oaks Ave
Sunnyvale, CA 94086
Phone (408) 885-7366

Interoperability endpoints

  • Direct secure messaging: atakayanagi234884@santaclaravalley.direct-ci.net

Organizations & group practices 7

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 9

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

NPI Registry JSON

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

{
    "created_epoch": "1528588800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1753056000000",
    "number": "1023501582",
    "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": "650-721-6295"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "TAKAYANAGI",
        "first_name": "ARIEL",
        "credential": "DO",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2018-06-10",
        "last_updated": "2025-07-21",
        "certification_date": "2025-07-21",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207T00000X",
            "taxonomy_group": "",
            "desc": "Neurological Surgery",
            "state": "CA",
            "license": "20A17764",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Stanford, CA

Sources for this page

Verify at the official NPI Registry.