Claudia O'Connor, DDS
General Practice Dentistry · Fountain Valley, CA
Claudia O'Connor, DDS is a general practice dentistry with a practice address in Fountain Valley, California, and NPI 1528167020, issued on Sep 21, 2006. Check the license (California D42598, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Claudia O'Connor
- Credential
- DDS
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- License number
- D42598 CA
Self-reported in NPPES; status is on the state search - Practice location
- 11059 Warner Ave, Fountain Valley, CA 92708
- Phone
- (714) 418-1974
- Enumerated
- Sep 21, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (714) 418-1969
- Entity
- Type 1 · individual
8 nearest general practice dentistry records → All 17,852 in California → Look up another NPI →
Also registered at 11059 Warner Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Joseph O'Connor, DDSDentist1326147000
Verify Claudia O'Connor in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license D42598Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
73% fewer Medicare Part D claims than the average general practice dentistry in 2024
22 Medicare Part D claims for 19 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
- Amoxicillin16 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.
Claudia O'Connor among 17,852 general practice dentistry records in California
Claudia O'Connor, DDS 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 updated2007 · 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).
43 general practice dentistry records list a practice address in Fountain Valley
They are 43 of the 2,190 NPPES records with a practice address in Fountain Valley, and 17,852 general practice dentistry records in California.
All 17,852 in California → Every provider in Fountain Valley → General Practice Dentistry nationwide →
The 8 general practice dentistry records with the nearest ZIP codes
- Hagop Babikian, DDSFountain Valley, CA 927081326151614
- Steven Chan, D.D.S.Fountain Valley, CA 927081396748240
- Robert Childs, D.D.S.Fountain Valley, CA 927081518963966
- Vernon Chinen, D.D.S.Fountain Valley, CA 927081528089091
- Gary Chow, D.D.S.Fountain Valley, CA 927081902824907
- Peter Hagen, DDSFountain Valley, CA 927081457448441
- Loan Huynh, DDSFountain Valley, CA 927081982614483
- Lisa Kato, D.D.S.Fountain Valley, CA 927081881798825
Common questions
What is Claudia O'Connor, DDS's NPI number?
Claudia O'Connor, DDS's National Provider Identifier (NPI) is 1528167020, issued on Sep 21, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Claudia O'Connor, DDS located?
The NPPES record lists a practice address at 11059 Warner Ave, Fountain Valley, CA, 92708. Phone: (714) 418-1974. Providers update this record themselves, so call before visiting.
How can I verify Claudia O'Connor, DDS's license?
NPPES lists California license number D42598, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Claudia O'Connor, DDS prescribe under Medicare Part D?
In 2024, Claudia O'Connor, DDS had 22 Medicare Part D claims for 19 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.