John E. Bosak, D.M.D.
General Practice Dentistry · Granada Hills, CA
John E. Bosak, D.M.D. is a general practice dentistry with a practice address in Granada Hills, California, and NPI 1164441838, issued on Jul 19, 2006. Check the license (California 38260, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- John E. Bosak
- Credential
- D.M.D.
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- License number
- 38260 CA
Self-reported in NPPES; status is on the state search - Practice location
- 10727 White Oak Ave Ste 213, Granada Hills, CA 91344
- Phone
- (818) 368-5676
- Enumerated
- Jul 19, 2006
- Record last updated
- Jun 30, 2015 (not updated in 11 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest general practice dentistry records → All 17,852 in California → Look up another NPI →
Verify John E. Bosak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 38260Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
72% fewer Medicare Part D claims than the average general practice dentistry in 2024
23 Medicare Part D claims for 20 beneficiaries, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Amoxicillin18 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
John E. Bosak among 17,852 general practice dentistry records in California
John E. Bosak, D.M.D. is one of 17,852 general practice dentistry records with a practice address in California. 57% 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 3% of them.
- NPI issued2006 · 3% of these records are older, 71% newer
- In a Medicare fileYes · 57% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2015 · 79% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223G0001X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
30 general practice dentistry records list a practice address in Granada Hills
They are 30 of the 671 NPPES records with a practice address in Granada Hills, and 17,852 general practice dentistry records in California.
All 17,852 in California → Every provider in Granada Hills → General Practice Dentistry nationwide →
The 8 general practice dentistry records with the nearest ZIP codes
- Karen Baghdasaryan, DDSGranada Hills, CA 913441518983931
- Alexander Basch, D.D.S.Granada Hills, CA 913441639226327
- Howard Cho, D.D.S.Granada Hills, CA 913441679639280
- Mustafa Dabbagh, DDSGranada Hills, CA 913441013087782
- Roger Joe, D.D.S.Granada Hills, CA 913441194802728
- William KimGranada Hills, CA 913441760541114
- Thomas Lee, DDSGranada Hills, CA 913441144230657
- Robert Luszczak, DDSGranada Hills, CA 913441063599694
Common questions
What is John E. Bosak, D.M.D.'s NPI number?
John E. Bosak, D.M.D.'s National Provider Identifier (NPI) is 1164441838, issued on Jul 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John E. Bosak, D.M.D. located?
The NPPES record lists a practice address at 10727 White Oak Ave Ste 213, Granada Hills, CA, 91344. Phone: (818) 368-5676. Providers update this record themselves, so call before visiting.
How can I verify John E. Bosak, D.M.D.'s license?
NPPES lists California license number 38260, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does John E. Bosak, D.M.D. prescribe under Medicare Part D?
In 2024, John E. Bosak, D.M.D. had 23 Medicare Part D claims for 20 beneficiaries; the average among general practice dentistry prescribers was 83. Part D covers Medicare prescriptions 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. 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.