Quick answers
- Where does William A. Kosik see patients?
- Medicare's clinician data lists 1 practice location in Carlsbad, CA. Call before your visit to confirm the address.
- What is William A. Kosik's specialty?
- Medicare lists Physical Therapist in Private Practice as the primary specialty.
- Does William A. Kosik accept Medicare assignment?
- Medicare's clinician data says William A. Kosik may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is the phone number for William A. Kosik?
- (760) 444-0102, as listed in official Medicare / NPI Registry data.
- What is William A. Kosik's NPI number?
- 1083662456. 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 William A. Kosik is enrolled with Medicare (CMS data updated 2026-10-02).
- 6070 Avenida Encinas, Suite 100Carlsbad, CA 92011 (760) 444‑0102
Group practices
Medicare enrollment lists William A. Kosik as a member of this group (CMS data updated 2026-10-02).
- Proactive Physical Therapy and Sports Medicine Inc55 clinicians in the group
Specialties
Find other clinicians: Physical Therapist in Private Practice, California →
Other physical therapists in Carlsbad
Clinicians with the same Medicare primary specialty in Carlsbad, CA — not a recommendation.
Clinician information
| Credential | PT |
|---|---|
| Medical school | University Of California, San Francisco School Of Medicine |
| Graduation year | 1999 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1083662456 |
| 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