Quick answers
- Which hospitals does Siddharth Singh work at?
- Medicare's official clinician data lists Siddharth Singh at 3 hospitals: Memorialcare Orange Coast Medical Center, Memorialcare Saddleback Medical Center and Riverside Community Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Siddharth Singh see patients?
- Medicare's clinician data lists 10 practice locations, including Irvine, CA, Los Angeles, CA and Glendale, CA. Call before your visit to confirm the address.
- What is Siddharth Singh's specialty?
- Medicare lists Anesthesiology as the primary specialty.
- Does Siddharth Singh accept Medicare assignment?
- Yes. Medicare's clinician data says Siddharth Singh 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 Siddharth Singh?
- (949) 671-4673, as listed in official Medicare / NPI Registry data.
- What is Siddharth Singh's NPI number?
- 1609134261. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Siddharth Singh works
Medicare's Facility Affiliation Data lists Siddharth Singh at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Memorialcare Orange Coast Medical CenterFountain Valley, CA · Acute Care Hospital · CCN 050678
- Memorialcare Saddleback Medical CenterLaguna Hills, CA · Acute Care Hospital · CCN 050603
- Riverside Community HospitalRiverside, CA · Acute Care Hospital · CCN 050022
Practice locations
Addresses where Siddharth Singh is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 10; the Medicare profile lists all.
- 1000 FivepointIrvine, CA 92618 (949) 671‑4673
- 1400 S Grand Ave, Suite 700Los Angeles, CA 90015 (213) 866‑1900
- 1420 S Central AveGlendale, CA 91204 (818) 502‑1900
- 14662 Newport AveTustin, CA 92780 (714) 619‑7700
- 1500 Duarte RdDuarte, CA 91010 (626) 256‑4673
Group practices
Medicare enrollment lists Siddharth Singh as a member of these groups (CMS data updated 2026-10-02).
- City of Hope Medical Foundation982 clinicians in the group
- Cep America - Anesthesia PC849 clinicians in the group
- Darin Rentz DO PC124 clinicians in the group
- Orange Coast Anesthesia Inc87 clinicians in the group
- Socal Anesthesia Solutions Inc46 clinicians in the group
- Sound Physicians Anesthesiology of California PC35 clinicians in the group
Specialties
- Anesthesiologyprimary
Other anesthesiologists in Irvine
Clinicians with the same Medicare primary specialty in Irvine, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2012 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1609134261 |
| 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