John Phillip Ducar, D.D.S.
Periodontics · Torrance, CA
John Phillip Ducar, D.D.S. is a periodontics with a practice address in Torrance, California, and NPI 1720083397, issued on Jun 20, 2005. Check the license (California 35488, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- John Phillip Ducar
- Credential
- D.D.S.
- Primary taxonomy
- Periodontics 1223P0300X
- License number
- 35488 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4201 Torrance Blvd, Torrance, CA 90503
- Phone
- (310) 540-1415
- Enumerated
- Jun 20, 2005
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (310) 540-1423
- Entity
- Type 1 · individual
8 nearest periodontics records → All 929 in California → Look up another NPI →
Also registered at 4201 Torrance Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ellyn Ashida, MDAllergy & Immunology Physician1245201516
- Sunny Beltran, BA, HAHearing Instrument Specialist1740670298
- Roy Blumenstrauch, M.D.Specialist1639175409
- Kenneth Bradley, MDPain Medicine Physician1558479352
- David Butsumyo, D.D.S.Endodontics1760496640
- Peter Chen, DDSGeneral Practice Dentistry1508887100
Verify John Phillip Ducar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 35488Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
47% more Medicare Part D claims than the average periodontics in 2024
407 Medicare Part D claims for 151 beneficiaries, against an average of 277 among the 4,191 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Chlorhexidine Gluconate143 claims
- Amoxicillin107 claims
- Ibuprofen82 claims
- Azithromycin18 claims
- Sodium Fluoride17 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 Phillip Ducar among 929 periodontics records in California
John Phillip Ducar, D.D.S. is one of 929 periodontics records with a practice address in California. 69% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 97% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2007 · 78% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223P0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Periodontics providers in California
There are 929 periodontics records in California.
All 929 in California → Every provider in Torrance → Periodontics nationwide →
The 8 periodontics records with the nearest ZIP codes
- Sharon Phamduong, DDS, MSTorrance, CA 905031477785103
- Christopher Acone, DDSTorrance, CA 905051659576551
- Arta Farahmand, DDSTorrance, CA 905051598845976
- Micael Hilario, D.D.S.Torrance, CA 905011073935128
- Alan Igasaki, DDSTorrance, CA 905051538260195
- Jinnu Kim, DMD MSTorrance, CA 905011851185920
- Perry Klokkevold, D.D.S., M.S.Torrance, CA 905051982920955
- Shen Ling, D.M.DTorrance, CA 905051003029927
Common questions
What is John Phillip Ducar, D.D.S.'s NPI number?
John Phillip Ducar, D.D.S.'s National Provider Identifier (NPI) is 1720083397, issued on Jun 20, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John Phillip Ducar, D.D.S. located?
The NPPES record lists a practice address at 4201 Torrance Blvd, Torrance, CA, 90503. Phone: (310) 540-1415. Providers update this record themselves, so call before visiting.
How can I verify John Phillip Ducar, D.D.S.'s license?
NPPES lists California license number 35488, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does John Phillip Ducar, D.D.S. prescribe under Medicare Part D?
In 2024, John Phillip Ducar, D.D.S. had 407 Medicare Part D claims for 151 beneficiaries; the average among periodontics prescribers was 277. 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.