NPIMap

Organization Active NPI

Golden State Orthopedics & Spine

  • Orthopaedic Surgery Physician
  • Fremont, CA
National Provider Identifier
1508701095
Registry record updated Apr 21, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Orthopaedic Surgery PhysicianTaxonomy code 207X00000X
Legal business name
GOLDEN STATE ORTHOPEDICS & SPINE
Practice address
39350 Civic Center Dr Ste 300
Fremont, CA 94538-2331
Phone
(510) 797-3933
Fax
(510) 797-5184
NPI assigned
Apr 21, 2026
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Apr 21, 2026

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

Authorized official

Name
Stephen Hammarstrom
Title
Ceo
Phone
(925) 256-2107

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Orthopaedic Surgery PhysicianGroup: 193200000X MULTI-SPECIALTY GROUP 207X00000X Primary

Addresses

Primary practice location

39350 Civic Center Dr Ste 300
Fremont, CA 94538-2331

Mailing address

PO Box 31396
Ste 300
Walnut Creek, CA 94598-8396
Phone (925) 939-8585

National Provider Directory

National Provider Directory
Tax ID family
Golden State Orthopedics S18 organizations share this tax ID, including this one

Other organizations with this tax ID 17

Organizations that report the same tax identification number in the National Provider Directory.

View all 17

NPI Registry JSON

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

{
    "created_epoch": "1776729600000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1776729600000",
    "number": "1508701095",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 31396",
            "address_2": "STE 300",
            "city": "WALNUT CREEK",
            "state": "CA",
            "postal_code": "945988396",
            "telephone_number": "925-939-8585",
            "fax_number": "925-933-2709"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "39350 CIVIC CENTER DR STE 300",
            "city": "FREMONT",
            "state": "CA",
            "postal_code": "945382331",
            "telephone_number": "510-797-3933",
            "fax_number": "510-797-5184"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "GOLDEN STATE ORTHOPEDICS & SPINE",
        "organizational_subpart": "NO",
        "enumeration_date": "2026-04-21",
        "last_updated": "2026-04-21",
        "certification_date": "2026-04-21",
        "status": "A",
        "authorized_official_last_name": "HAMMARSTROM",
        "authorized_official_first_name": "STEPHEN",
        "authorized_official_title_or_position": "CEO",
        "authorized_official_telephone_number": "925-256-2107"
    },
    "taxonomies": [
        {
            "code": "207X00000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Orthopaedic Surgery",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Fremont, CA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 21, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.