Quick answers
- Which hospitals does Duane D. Stephens work at?
- Medicare's official clinician data lists Duane D. Stephens at 2 hospitals: Alta Bates Summit Medical Center and Alta Bates Summit Medical Center - Alta Bates Camp…. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Duane D. Stephens see patients?
- Medicare's clinician data lists 7 practice locations, including Orinda, CA, Berkeley, CA and Fremont, CA. Call before your visit to confirm the address.
- What is Duane D. Stephens's specialty?
- Medicare lists Cardiovascular Disease (Cardiology) as the primary specialty.
- Does Duane D. Stephens accept Medicare assignment?
- Yes. Medicare's clinician data says Duane D. Stephens 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 Duane D. Stephens?
- (925) 283-3300, as listed in official Medicare / NPI Registry data.
- What is Duane D. Stephens's NPI number?
- 1972526044. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Duane D. Stephens works
Medicare's Facility Affiliation Data lists Duane D. Stephens 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 CenterOakland, CA · Acute Care Hospital · CCN 050043
- Alta Bates Summit Medical Center - Alta Bates Camp…Berkeley, CA · Acute Care Hospital · CCN 050305
Practice locations
Addresses where Duane D. Stephens is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 7; the Medicare profile lists all.
- 15 Altarinda Rd, Suite 112Orinda, CA 94563 (925) 283‑3300
- 2450 Ashby AveBerkeley, CA 94705
- 2450 Ashby Ave, Rm 5505Berkeley, CA 94705 (510) 204‑4444
- 3200 Kearney StFremont, CA 94538 (510) 490‑1222
- 350 Hawthorne AveOakland, CA 94609
Group practices
Medicare enrollment lists Duane D. Stephens as a member of these groups (CMS data updated 2026-10-02).
- Sutter Bay Medical Foundation3,829 clinicians in the group
- Berkeley Cardiovascular Medical Group3 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in California →
Other cardiologists in Orinda
Clinicians with the same Medicare primary specialty in Orinda, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of California, Geffen School Of Medicine |
| Graduation year | 1974 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1972526044 |
| 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