Quick answers
- Which hospitals does Mehrdad Karimi work at?
- Medicare's official clinician data lists Mehrdad Karimi at 4 hospitals: Adventist Health Clearlake, Enloe Health, Orchard Hospital and Oroville Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mehrdad Karimi see patients?
- Medicare's clinician data lists 3 practice locations, including Irvine, CA, Duarte, CA and Chico, CA. Call before your visit to confirm the address.
- What is Mehrdad Karimi's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Mehrdad Karimi accept Medicare assignment?
- Yes. Medicare's clinician data says Mehrdad Karimi 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 Mehrdad Karimi?
- (949) 671-4673, as listed in official Medicare / NPI Registry data.
- What is Mehrdad Karimi's NPI number?
- 1528694403. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mehrdad Karimi works
Medicare's Facility Affiliation Data lists Mehrdad Karimi at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Adventist Health ClearlakeClearlake, CA · Critical Access Hospital · CCN 051317
- Enloe HealthChico, CA · Acute Care Hospital · CCN 050039
- Orchard HospitalGridley, CA · Critical Access Hospital · CCN 051311
- Oroville HospitalOroville, CA · Acute Care Hospital · CCN 050030
Practice locations
Addresses where Mehrdad Karimi is enrolled with Medicare (CMS data updated 2026-10-02).
- 1000 FivepointIrvine, CA 92618 (949) 671‑4673
- 1500 Duarte RdDuarte, CA 91010 (626) 256‑4673
- 1531 EsplanadeChico, CA 95926 (530) 332‑5557
Group practices
Medicare enrollment lists Mehrdad Karimi as a member of these groups (CMS data updated 2026-10-02).
- City of Hope Medical Foundation982 clinicians in the group
- Enloe Medical Center333 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Irvine
Clinicians with the same Medicare primary specialty in Irvine, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2020 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1528694403 |
| 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