Quick answers
- Which hospitals does Larisa Zeltser work at?
- Medicare's official clinician data lists Larisa Zeltser at 1 hospital: Hoag Memorial Hospital Presbyterian. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Larisa Zeltser see patients?
- Medicare's clinician data lists 3 practice locations, including Irvine, CA and Aliso Viejo, CA. Call before your visit to confirm the address.
- What is Larisa Zeltser's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does Larisa Zeltser accept Medicare assignment?
- Yes. Medicare's clinician data says Larisa Zeltser 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 Larisa Zeltser?
- (949) 557-0000, as listed in official Medicare / NPI Registry data.
- What is Larisa Zeltser's NPI number?
- 1780622720. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Larisa Zeltser works
Medicare's Facility Affiliation Data lists Larisa Zeltser 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
Practice locations
Addresses where Larisa Zeltser is enrolled with Medicare (CMS data updated 2026-10-02).
- 16205 Sand Canyon Ave, Suite 100Irvine, CA 92618 (949) 557‑0000
- 26671 Aliso Creek Rd, Suite 101Aliso Viejo, CA 92656 (949) 791‑3107
- 49000 Barranca Pkwy, Suite 103Irvine, CA 92604 (949) 791‑3106
Group practices
Medicare enrollment lists Larisa Zeltser as a member of this group (CMS data updated 2026-10-02).
- HMTS Inc118 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Irvine
Clinicians with the same Medicare primary specialty in Irvine, CA — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 2003 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1780622720 |
| 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