Quick answers
- Where does Atih A. Seif see patients?
- Medicare's clinician data lists 1 practice location in Irvine, CA. Call before your visit to confirm the address.
- What is Atih A. Seif's specialty?
- Medicare lists Psychiatry as the primary specialty.
- Does Atih A. Seif accept Medicare assignment?
- Yes. Medicare's clinician data says Atih A. Seif 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 Atih A. Seif?
- (949) 671-4673, as listed in official Medicare / NPI Registry data.
- What is Atih A. Seif's NPI number?
- 1821332099. 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 Atih A. Seif is enrolled with Medicare (CMS data updated 2026-10-02).
- 1000 FivepointIrvine, CA 92618 (949) 671‑4673
Group practices
Medicare enrollment lists Atih A. Seif as a member of this group (CMS data updated 2026-10-02).
- City of Hope Medical Foundation982 clinicians in the group
Specialties
- Psychiatryprimary
Other psychiatrists in Irvine
Clinicians with the same Medicare primary specialty in Irvine, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1998 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1821332099 |
| 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