Quick answers
- Which hospitals does Randall J. Cornateanu work at?
- Medicare's official clinician data lists Randall J. Cornateanu at 3 hospitals: PIH Health Downey Hospital, PIH Health Hospital-Whittier and UCI Health-Orange. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Randall J. Cornateanu see patients?
- Medicare's clinician data lists 3 practice locations, including Orange, CA, Whittier, CA and Placentia, CA. Call before your visit to confirm the address.
- What is Randall J. Cornateanu's specialty?
- Medicare lists General Surgery as the primary specialty.
- Does Randall J. Cornateanu accept Medicare assignment?
- Yes. Medicare's clinician data says Randall J. Cornateanu 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 Randall J. Cornateanu?
- (714) 634-5549, as listed in official Medicare / NPI Registry data.
- What is Randall J. Cornateanu's NPI number?
- 1043606429. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Randall J. Cornateanu works
Medicare's Facility Affiliation Data lists Randall J. Cornateanu at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- PIH Health Downey HospitalDowney, CA · Acute Care Hospital · CCN 050393
- PIH Health Hospital-WhittierWhittier, CA · Acute Care Hospital · CCN 050169
- UCI Health-OrangeOrange, CA · Acute Care Hospital · CCN 050348
Practice locations
Addresses where Randall J. Cornateanu is enrolled with Medicare (CMS data updated 2026-10-02).
- 101 the City Dr SOrange, CA 92868 (714) 634‑5549
- 12401 Washington Blvd, Suite 100Whittier, CA 90602 (562) 967‑2885
- 1325 N Rose Dr, Suite 102Placentia, CA 92870 (951) 314‑3088
Group practices
Medicare enrollment lists Randall J. Cornateanu as a member of these groups (CMS data updated 2026-10-02).
- PIH Health Physicians622 clinicians in the group
- University Surgeons of Orange a Medical Group116 clinicians in the group
- Ocean Surgical Inc2 clinicians in the group
Specialties
- General Surgeryprimary
Other general surgeons in Orange
Clinicians with the same Medicare primary specialty in Orange, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2015 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1043606429 |
| 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