Quick answers
- Which hospitals does Steven A. Harrison work at?
- Medicare's official clinician data lists Steven A. Harrison at 1 hospital: Alta Bates Summit Medical Center - Alta Bates Camp…. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Steven A. Harrison see patients?
- Medicare's clinician data lists 1 practice location in Walnut Creek, CA. Call before your visit to confirm the address.
- What is Steven A. Harrison's specialty?
- Medicare lists Ophthalmology as the primary specialty.
- Does Steven A. Harrison accept Medicare assignment?
- Yes. Medicare's clinician data says Steven A. Harrison accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Steven A. Harrison?
- (925) 947-0505, as listed in official Medicare / NPI Registry data.
- What is Steven A. Harrison's NPI number?
- 1821023755. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Steven A. Harrison works
Medicare's Facility Affiliation Data lists Steven A. Harrison at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Alta Bates Summit Medical Center - Alta Bates Camp…Berkeley, CA · Acute Care Hospital · CCN 050305
Practice locations
Addresses where Steven A. Harrison is enrolled with Medicare (CMS data updated 2026-10-02).
- 1299 Newell Hill Pl, Suite 103Walnut Creek, CA 94596 (925) 947‑0505
Group practices
Medicare enrollment lists Steven A. Harrison as a member of this group (CMS data updated 2026-10-02).
- Steven a Harrison MD a Professional Corporation2 clinicians in the group
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Walnut Creek
Clinicians with the same Medicare primary specialty in Walnut Creek, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | New York University School Of Medicine |
| Graduation year | 1987 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1821023755 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians