Quick answers
- Which hospitals does Bonnie Balzer work at?
- Medicare's official clinician data lists Bonnie Balzer at 2 hospitals: Cedar-Sinai Marina del Rey Hospital and Cedars-Sinai Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Bonnie Balzer see patients?
- Medicare's clinician data lists 2 practice locations, including Irvine, CA and Santa Maria, CA. Call before your visit to confirm the address.
- What is Bonnie Balzer's specialty?
- Medicare lists Pathology as the primary specialty.
- Does Bonnie Balzer accept Medicare assignment?
- Yes. Medicare's clinician data says Bonnie Balzer 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 Bonnie Balzer?
- (949) 333-3661, as listed in official Medicare / NPI Registry data.
- What is Bonnie Balzer's NPI number?
- 1649247602. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Bonnie Balzer works
Medicare's Facility Affiliation Data lists Bonnie Balzer at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Cedar-Sinai Marina del Rey HospitalMarina del Rey, CA · Acute Care Hospital · CCN 050740
- Cedars-Sinai Medical CenterLos Angeles, CA · Acute Care Hospital · CCN 050625
Practice locations
Addresses where Bonnie Balzer is enrolled with Medicare (CMS data updated 2026-10-02).
- 1 Technology Dr, Suite C523Irvine, CA 92618 (949) 333‑3661
- 1400 E Church StSanta Maria, CA 93454 (805) 739‑3000
Group practices
Medicare enrollment lists Bonnie Balzer as a member of these groups (CMS data updated 2026-10-02).
- Cedars-Sinai Medical Care Foundation1,692 clinicians in the group
- Diagnostic Pathology Services of the Central Coast13 clinicians in the group
Specialties
- Pathologyprimary
Other pathologists in Irvine
Clinicians with the same Medicare primary specialty in Irvine, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Stanford University School Of Medicine |
| Graduation year | 2000 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1649247602 |
| 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