William A. Kosik, P.T.
Physical Therapist · La Jolla, CA
William A. Kosik, P.T. is a physical therapist with a practice address in La Jolla, California, and NPI 1083662456, issued on May 5, 2006. Check the license (California PT 24845, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- William A. Kosik
- Credential
- P.T.
- Primary taxonomy
- Physical Therapist 225100000X
- License number
- PT 24845 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4150 Regents Park Row, La Jolla, CA 92037
- Phone
- (858) 657-8199
- Enumerated
- May 5, 2006
- Record last updated
- Jul 13, 2026
- Fax
- (858) 657-8170
- Medicare enrollment
- Enrolled (PECOS I20071023000546); may accept Medicare assignment
- Medical or professional school
- University Of California, San Francisco School Of Medicine, 1999
- Entity
- Type 1 · individual
8 nearest physical therapist records → All 22,531 in California → Look up another NPI →
Also registered at 4150 Regents Park Row
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Stephanie Hassibi, P.T.Physical Therapist1205010048
- Stephen Lockwood, D.M.D., M.A.G.D.General Practice Dentistry1184837932
Verify William A. Kosik in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PT 24845Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The MIPS final score for 2023 (Medicare payment program): 60.8 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Proactive Physical Therapy And Sports Medicine IncCarlsbad, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William A. Kosik among 22,531 physical therapist records in California
William A. Kosik, P.T. is one of 22,531 physical therapist records with a practice address in California. 32% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 2% of them.
- NPI issued2006 · 2% of these records are older, 84% newer
- In a Medicare fileYes · 32% of these records are
- In the CMS Doctors and Clinicians fileYes · 34% of these records are
- Graduated1999 · median 2017 among the 7,751 with a school on file
- Record last updated2026 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 225100000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
64 physical therapist records list a practice address in La Jolla
They are 64 of the 3,648 NPPES records with a practice address in La Jolla, and 22,531 physical therapist records in California.
All 22,531 in California → Every provider in La Jolla → Physical Therapist nationwide →
The 8 physical therapist records with the nearest ZIP codes
- Guadalupe Bertino, MPTLa Jolla, CA 920371942285820
- Yvonne Body, PTLa Jolla, CA 920371306822507
- Renee Carlson, P.T.La Jolla, CA 920371164515177
- Gloria Creamer, RPTLa Jolla, CA 920371356381875
- Kevin Donnellan, MSPTLa Jolla, CA 920371710082011
- Ranae Hause, P.T.La Jolla, CA 920371841253721
- Douglas Hoeck, P.T.La Jolla, CA 920371700825213
- Julie Hom, P.T.La Jolla, CA 920371457434631
Common questions
What is William A. Kosik, P.T.'s NPI number?
William A. Kosik, P.T.'s National Provider Identifier (NPI) is 1083662456, issued on May 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William A. Kosik, P.T. located?
The NPPES record lists a practice address at 4150 Regents Park Row, La Jolla, CA, 92037. Phone: (858) 657-8199. Providers update this record themselves, so call before visiting.
How can I verify William A. Kosik, P.T.'s license?
NPPES lists California license number PT 24845, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
What is William A. Kosik, P.T.'s MIPS final score?
The 2023 MIPS final score is 60.8 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.