Alexander Kosker, D.C.
Chiropractor · Toluca Lake, CA
Alexander Kosker, D.C. is a chiropractor with a practice address in Toluca Lake, California, and NPI 1285417311, issued on Aug 14, 2023. Check the license (California DC36721, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Alexander Kosker
- Credential
- D.C.
- Primary taxonomy
- Chiropractor 111N00000X
- License number
- DC36721 CA
Self-reported in NPPES; status is on the state search - Practice location
- 10142 Riverside Dr, Toluca Lake, CA 91602
- Phone
- (818) 505-9977
- Enumerated
- Aug 14, 2023
- Record last updated
- Aug 14, 2023
- Entity
- Type 1 · individual
8 nearest chiropractor records → All 11,498 in California → Look up another NPI →
Also registered at 10142 Riverside Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mark Kosker, D.C.Chiropractor1396892675
Verify Alexander Kosker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license DC36721Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Alexander Kosker among 11,498 chiropractor records in California
Alexander Kosker, D.C. is one of 11,498 chiropractor records with a practice address in California. 7% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2023, is newer than 91% of them.
- NPI issued2023 · 91% of these records are older, 7% newer
- In a Medicare fileNo · 7% of these records are
- In the CMS Doctors and Clinicians fileNo · 25% of these records are
- Record last updated2023 · 77% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 111N00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
12 chiropractor records list a practice address in Toluca Lake
They are 12 of the 108 NPPES records with a practice address in Toluca Lake, and 11,498 chiropractor records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 11,498 in California → Every provider in Toluca Lake → Chiropractor nationwide →
The 8 chiropractor records with the nearest ZIP codes
- Patrick Bennett, D.C.Studio City, CA 916021538291778
- Elizabeth Carpenter, D.C.Toluca Lake, CA 916021972574804
- Leland Carroll, D.C.Studio City, CA 916021396817359
- Alyce Easterline, DCNorth Hollywood, CA 916021679608087
- Carl Howard, DCNorth Hollywood, CA 916021972662815
- Mark Kosker, D.C.Toluca Lake, CA 916021396892675
- Michele Longoria, D.C.North Hollywood, CA 916021871532028
- Golan Nissim, D.C., A.R.T., Q.M.E.Toluca Lake, CA 916021932270147
Common questions
What is Alexander Kosker, D.C.'s NPI number?
Alexander Kosker, D.C.'s National Provider Identifier (NPI) is 1285417311, issued on Aug 14, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Alexander Kosker, D.C. located?
The NPPES record lists a practice address at 10142 Riverside Dr, Toluca Lake, CA, 91602. Phone: (818) 505-9977. Providers update this record themselves, so call before visiting.
How can I verify Alexander Kosker, D.C.'s license?
NPPES lists California license number DC36721, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.