Mark F. Simkins, DDS
General Practice Dentistry · Antioch, CA
Mark F. Simkins, DDS is a general practice dentistry with a practice address in Antioch, California, and NPI 1447566369, issued on Aug 30, 2010. Check the license (California 59709, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mark F. Simkins
- Credential
- DDS
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- License number
- 59709 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2730 Lone Tree Way Ste 2, Antioch, CA 94509
- Phone
- (925) 757-5000
- Enumerated
- Aug 30, 2010
- Record last updated
- Jun 20, 2012 (not updated in 14 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 Mark F. Simkins in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 59709Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
80% fewer Medicare Part D claims than the average general practice dentistry in 2024
17 Medicare Part D claims, 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.
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.
Mark F. Simkins among 17,852 general practice dentistry records in California
Mark F. Simkins, 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 2010, is newer than 68% of them.
- NPI issued2010 · 68% of these records are older, 30% 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 updated2012 · 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).
39 general practice dentistry records list a practice address in Antioch
They are 39 of the 2,184 NPPES records with a practice address in Antioch, and 17,852 general practice dentistry records in California.
All 17,852 in California → Every provider in Antioch → General Practice Dentistry nationwide →
The 8 general practice dentistry records with the nearest ZIP codes
- David Brown, D.D.S.Antioch, CA 945091467506303
- Daniel Burk, D.D.S.Antioch, CA 945091396894432
- David Campos, DDSAntioch, CA 945091073615167
- Mounir Guirguis, DDSAntioch, CA 945091134458177
- Farooq Khan, D.D.S.Antioch, CA 945091487716510
- Dennis Lamb, D.D.S.Antioch, CA 945091659422756
- David Leong, D.M.D.Antioch, CA 945091801015813
- William Morrice, DDSAntioch, CA 945091386761781
Common questions
What is Mark F. Simkins, DDS's NPI number?
Mark F. Simkins, DDS's National Provider Identifier (NPI) is 1447566369, issued on Aug 30, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Mark F. Simkins, DDS located?
The NPPES record lists a practice address at 2730 Lone Tree Way Ste 2, Antioch, CA, 94509. Phone: (925) 757-5000. Providers update this record themselves, so call before visiting.
How can I verify Mark F. Simkins, DDS's license?
NPPES lists California license number 59709, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Mark F. Simkins, DDS prescribe under Medicare Part D?
In 2024, Mark F. Simkins, DDS had 17 Medicare Part D claims; 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.