Quick answers
- Which hospitals does Nisha Warikoo work at?
- Medicare's official clinician data lists Nisha Warikoo at 1 hospital: College Hospital Costa Mesa. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Nisha Warikoo see patients?
- Medicare's clinician data lists 2 practice locations, including Costa Mesa, CA and Chino, CA. Call before your visit to confirm the address.
- What is Nisha Warikoo's specialty?
- Medicare lists Psychiatry as the primary specialty.
- Does Nisha Warikoo accept Medicare assignment?
- Medicare's clinician data says Nisha Warikoo may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is the phone number for Nisha Warikoo?
- (949) 642-2734, as listed in official Medicare / NPI Registry data.
- What is Nisha Warikoo's NPI number?
- 1306164462. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Nisha Warikoo works
Medicare's Facility Affiliation Data lists Nisha Warikoo at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- College Hospital Costa MesaCosta Mesa, CA · Acute Care Hospital · CCN 050543
Practice locations
Addresses where Nisha Warikoo is enrolled with Medicare (CMS data updated 2026-10-02).
- 301 Victoria StCosta Mesa, CA 92627 (949) 642‑2734
- 5353 G StChino, CA 91710 (909) 590‑3700
Specialties
- Psychiatryprimary
Other psychiatrists in Costa Mesa
Clinicians with the same Medicare primary specialty in Costa Mesa, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2003 |
| Gender (as listed) | Female |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1306164462 |
| 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