Quick answers
- Which hospitals does Chris Tsimerekis work at?
- Medicare's official clinician data lists Chris Tsimerekis at 2 hospitals: Hoag Memorial Hospital Presbyterian and Memorialcare Orange Coast Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Chris Tsimerekis see patients?
- Medicare's clinician data lists 1 practice location in Fountain Valley, CA. Call before your visit to confirm the address.
- What is Chris Tsimerekis's specialty?
- Medicare lists Endocrinology as the primary specialty, and also Internal Medicine.
- Does Chris Tsimerekis accept Medicare assignment?
- Yes. Medicare's clinician data says Chris Tsimerekis 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.
- Does Chris Tsimerekis offer telehealth?
- Medicare's clinician data says Chris Tsimerekis offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Chris Tsimerekis?
- (714) 966-7200, as listed in official Medicare / NPI Registry data.
- What is Chris Tsimerekis's NPI number?
- 1942311832. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Chris Tsimerekis works
Medicare's Facility Affiliation Data lists Chris Tsimerekis at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Hoag Memorial Hospital PresbyterianNewport Beach, CA · Acute Care Hospital · CCN 050224
- Memorialcare Orange Coast Medical CenterFountain Valley, CA · Acute Care Hospital · CCN 050678
Practice locations
Addresses where Chris Tsimerekis is enrolled with Medicare (CMS data updated 2026-10-02).
- 17100 Euclid StFountain Valley, CA 92708 (714) 966‑7200
Specialties
- Endocrinologyprimary
- Internal Medicinealso
Other endocrinologists in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of California, Geffen School Of Medicine |
| Graduation year | 1993 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1942311832 |
| 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