Quick answers
- Where does Ian Gerszewski see patients?
- Medicare's clinician data lists 2 practice locations, including Mission Viejo, CA and Torrance, CA. Call before your visit to confirm the address.
- What is Ian Gerszewski's specialty?
- Medicare lists Qualified Audiologist as the primary specialty.
- Does Ian Gerszewski accept Medicare assignment?
- Yes. Medicare's clinician data says Ian Gerszewski 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 Ian Gerszewski?
- (949) 855-7898, as listed in official Medicare / NPI Registry data.
- What is Ian Gerszewski's NPI number?
- 1295183978. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Ian Gerszewski is enrolled with Medicare (CMS data updated 2026-10-02).
- 26302 La Paz Rd, Suite 107Mission Viejo, CA 92691 (949) 855‑7898
- 3734 Sepulveda BlvdTorrance, CA 90505 (310) 375‑6161
Group practices
Medicare enrollment lists Ian Gerszewski as a member of this group (CMS data updated 2026-10-02).
- South Bay Hearing and Balance Center Inc.5 clinicians in the group
Specialties
- Qualified Audiologistprimary
Other audiologists in Mission Viejo
Clinicians with the same Medicare primary specialty in Mission Viejo, CA — not a recommendation.
Clinician information
| Graduation year | 2016 |
|---|---|
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1295183978 |
| 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
- 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