NPIMap

Organization Active NPI

Golden State Orthopedics & Spine

  • Orthopaedic Surgery Physician
  • San Jose, CA
National Provider Identifier
1245021401
Registry record updated May 15, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Orthopaedic Surgery PhysicianTaxonomy code 207X00000X
Legal business name
GOLDEN STATE ORTHOPEDICS & SPINE
Practice address
2115 The Alameda
San Jose, CA 95126-1141
Phone
(408) 293-7767
NPI assigned
May 15, 2025
Organization subpart
No

NPPES NPI Registry

Updated by the provider on May 15, 2025

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

2115 The Alameda
San Jose, CA 95126-1141

Mailing address

PO Box 31396
Walnut Creek, CA 94598-8396
Phone (925) 256-2107

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
O20031103000721 CA Part B Supplier - Clinic/Group Practice 8224940739 Receives reassigned benefits from 275 practitioners
21 other NPIs on this enrollment
This NPI is an additional NPI on the enrollment
Practice locations: Oakland, CA; San Francisco, CA; San Jose, CA; San Ramon, CA; Santa Clara, CA; Walnut Creek, CA; Watsonville, CA; Mountain View, CA…

Other NPIs on the same Medicare enrollment 21

NPIs listed together on one Medicare enrollment, typically parts of the same organization.

View all 21

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

Locations

350 John Muir Pkwy
Ste 100
Brentwood, CA 94513
Phone (925) 513-2483

3315 Broadway
Oakland, CA 94611
Phone (510) 486-2300

Practitioners & affiliated clinicians

Practitioners 274

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.

View all 274

NPI Registry JSON

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

{
    "created_epoch": "1747267200000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1747267200000",
    "number": "1245021401",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 31396",
            "city": "WALNUT CREEK",
            "state": "CA",
            "postal_code": "945988396",
            "telephone_number": "925-256-2107"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2115 THE ALAMEDA",
            "city": "SAN JOSE",
            "state": "CA",
            "postal_code": "951261141",
            "telephone_number": "408-293-7767"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "GOLDEN STATE ORTHOPEDICS & SPINE",
        "organizational_subpart": "NO",
        "enumeration_date": "2025-05-15",
        "last_updated": "2025-05-15",
        "certification_date": "2025-05-15",
        "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 San Jose, CA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 15, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.