Paul Arthur Diercks, DDS
Dentist · San Mateo, CA
Paul Arthur Diercks, DDS is a dentist with a practice address in San Mateo, California, and NPI 1326055005, issued on Aug 2, 2006. Check the license (California 45679, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Paul Arthur Diercks
- Credential
- DDS
- Primary taxonomy
- Dentist 122300000X
- License number
- 45679 CA
Self-reported in NPPES; status is on the state search - Practice location
- 320 N San Mateo Dr, San Mateo, CA 94401
- Phone
- (650) 342-7401
- Enumerated
- Aug 2, 2006
- Record last updated
- Mar 20, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (650) 342-6003
- Entity
- Type 1 · individual
8 nearest dentist records → All 14,729 in California → Look up another NPI →
Also registered at 320 N San Mateo Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Li-Chu Chen, DDSGeneral Practice Dentistry1982790861
- Fred Diercks, DDSDentist1215943071
- Tze-Foun Tsiang, DDS,MSDGeneral Practice Dentistry1780801886
Verify Paul Arthur Diercks in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 45679Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
79% fewer Medicare Part D claims than the average dentist in 2024
18 Medicare Part D claims for 15 beneficiaries, against an average of 86 among the 51,021 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
Paul Arthur Diercks among 14,729 dentist records in California
Paul Arthur Diercks, DDS is one of 14,729 dentist records with a practice address in California. 56% 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, 82% newer
- In a Medicare fileYes · 56% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2012 · 73% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 122300000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
69 dentist records list a practice address in San Mateo
They are 69 of the 3,909 NPPES records with a practice address in San Mateo, and 14,729 dentist records in California.
All 14,729 in California → Every provider in San Mateo → Dentist nationwide →
The 8 dentist records with the nearest ZIP codes
- Vincent Asai, DDSSan Mateo, CA 944011265502645
- Ricci Chan, D.M.DSan Mateo, CA 944011447267950
- Fred Diercks, DDSSan Mateo, CA 944011215943071
- Lynn Gitlin, DDSSan Mateo, CA 944011952460883
- Balfour Kay, DDSSan Mateo, CA 944011699851816
- Oanh Le, DDSSan Mateo, CA 944011437362399
- Wanda Leong, D.D.S.San Mateo, CA 944011154481976
- Kehan Li, DDSSan Mateo, CA 944011215002969
Common questions
What is Paul Arthur Diercks, DDS's NPI number?
Paul Arthur Diercks, DDS's National Provider Identifier (NPI) is 1326055005, issued on Aug 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Paul Arthur Diercks, DDS located?
The NPPES record lists a practice address at 320 N San Mateo Dr, San Mateo, CA, 94401. Phone: (650) 342-7401. Providers update this record themselves, so call before visiting.
How can I verify Paul Arthur Diercks, DDS's license?
NPPES lists California license number 45679, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Paul Arthur Diercks, DDS prescribe under Medicare Part D?
In 2024, Paul Arthur Diercks, DDS had 18 Medicare Part D claims for 15 beneficiaries; the average among dentist prescribers was 86. 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.