Quick answers
- Where does Altaf H. Ansari see patients?
- Medicare's clinician data lists 5 practice locations, including Orinda, CA, Castro Valley, CA and Berkeley, CA. Call before your visit to confirm the address.
- What is Altaf H. Ansari's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does Altaf H. Ansari accept Medicare assignment?
- Yes. Medicare's clinician data says Altaf H. Ansari 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 Altaf H. Ansari?
- (510) 204-8180, as listed in official Medicare / NPI Registry data.
- What is Altaf H. Ansari's NPI number?
- 1700938297. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Altaf H. Ansari is enrolled with Medicare (CMS data updated 2026-10-02).
- 12 Camino EncinasOrinda, CA 94563 (510) 204‑8180
- 20101 Lake Chabot RdCastro Valley, CA 94546 (510) 886‑3400
- 20103 Lake Chabot RdCastro Valley, CA 94546 (510) 727‑3256
- 2500 Milvia StBerkeley, CA 94704 (510) 204‑5600
- 3200 Kearney StFremont, CA 94538 (510) 490‑1222
Group practices
Medicare enrollment lists Altaf H. Ansari as a member of this group (CMS data updated 2026-10-02).
- Sutter Bay Medical Foundation3,829 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Orinda
Clinicians with the same Medicare primary specialty in Orinda, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1976 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1700938297 |
| 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
- 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