Quick answers
- Which hospitals does Negar Sodeifi work at?
- Medicare's official clinician data lists Negar Sodeifi at 5 hospitals: Adventist Health Sierra Vista, Adventist Health Twin Cities, Henry Mayo Newhall Hospital, John Muir Medical Center - Concord Campus and John Muir Medical Center - Walnut Creek Campus. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Negar Sodeifi see patients?
- Medicare's clinician data lists 5 practice locations, including Templeton, CA, Alamo, CA and Walnut Creek, CA. Call before your visit to confirm the address.
- What is Negar Sodeifi's specialty?
- Medicare lists Neurology as the primary specialty.
- Does Negar Sodeifi accept Medicare assignment?
- Yes. Medicare's clinician data says Negar Sodeifi 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 Negar Sodeifi?
- (805) 434-3500, as listed in official Medicare / NPI Registry data.
- What is Negar Sodeifi's NPI number?
- 1437321429. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Negar Sodeifi works
Medicare's Facility Affiliation Data lists Negar Sodeifi at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Adventist Health Sierra VistaSan Luis Obispo, CA · Acute Care Hospital · CCN 050506
- Adventist Health Twin CitiesTempleton, CA · Acute Care Hospital · CCN 050633
- Henry Mayo Newhall HospitalValencia, CA · Acute Care Hospital · CCN 050624
- John Muir Medical Center - Concord CampusConcord, CA · Acute Care Hospital · CCN 050496
- John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA · Acute Care Hospital · CCN 050180
Practice locations
Addresses where Negar Sodeifi is enrolled with Medicare (CMS data updated 2026-10-02).
- 1100 Las Tablas RdTempleton, CA 93465 (805) 434‑3500
- 1505 Saint Alphonsus WayAlamo, CA 94507 (925) 932‑6330
- 1601 Ygnacio Valley RdWalnut Creek, CA 94598 (925) 947‑3336
- 365 Lennon LnWalnut Creek, CA 94598
- 575 Lennon LnWalnut Creek, CA 94598 (925) 378‑4512
Group practices
Medicare enrollment lists Negar Sodeifi as a member of this group (CMS data updated 2026-10-02).
- Bass Medical Group291 clinicians in the group
Specialties
- Neurologyprimary
Other neurologists in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1999 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1437321429 |
| 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