Golden State Orthopedics & Spine
NPI 1073458568 · Orthopaedic Surgery Physician · Hayward, CA
Golden State Orthopedics & Spine is a Orthopaedic Surgery Physician organization in Hayward, CA (NPI 1073458568).
Provider details
- NPI number
- 1073458568
- Entity type
- Organization
- Primary specialty
- Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Stephen Hammarstrom, Ceo(925) 256-2107
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
Under 1 yr in registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2026-04-21
- Last updated
- 2026-04-21
- Certified
- 2026-04-21
Frequently asked questions
- What is Golden State Orthopedics & Spine's NPI number?
- Golden State Orthopedics & Spine's National Provider Identifier (NPI) is 1073458568, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Golden State Orthopedics & Spine?
- Golden State Orthopedics & Spine is classified in the NPPES registry as Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Golden State Orthopedics & Spine located?
- Golden State Orthopedics & Spine's practice location on file with NPPES is 27206 Calaroga Ave Ste 207, Hayward, CA 94545-4300.
- What is Golden State Orthopedics & Spine's phone number?
- The practice phone number listed in the NPPES registry for Golden State Orthopedics & Spine is (510) 300-9898.
- Who is the authorized official for Golden State Orthopedics & Spine?
- The authorized official listed on Golden State Orthopedics & Spine's NPPES record is Stephen Hammarstrom, Ceo. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Golden State Orthopedics & Spine's NPI active?
- Yes — Golden State Orthopedics & Spine's NPI (1073458568) is active in the NPPES registry as of the last update on 2026-04-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.