Mark Richard Koenen, DDS
General Practice Dentistry · Danville, CA
Mark Richard Koenen, DDS is a general practice dentistry with a practice address in Danville, California, and NPI 1023111952, issued on Sep 6, 2006. Check the license (California 36780, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mark Richard Koenen
- Credential
- DDS
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- License number
- 36780 CA
Self-reported in NPPES; status is on the state search - Practice location
- 520 LA Gonda Way, Danville, CA 94526
- Phone
- (925) 837-6318
- Enumerated
- Sep 6, 2006
- Record last updated
- Nov 7, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (925) 837-4992
- Entity
- Type 1 · individual
8 nearest general practice dentistry records → All 17,852 in California → Look up another NPI →
Also registered at 520 LA Gonda Way
A shared address usually means a shared clinic or building; it does not show who employs whom.
- James Giblin, D.D.S.General Practice Dentistry1609896141
- David Graham, DDSGeneral Practice Dentistry1861502957
- Robert Miranda, D.M.D.Endodontics1285743815
- Joey Nguyen, DDSDentist1720503923
- John O'Grady, D.M.D.General Practice Dentistry1861459539
- David Partrite, D.D.S.Dentist1174809230
Verify Mark Richard Koenen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 36780Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
82% fewer Medicare Part D claims than the average general practice dentistry in 2024
15 Medicare Part D claims for 12 beneficiaries, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D.
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 Richard Koenen among 17,852 general practice dentistry records in California
Mark Richard Koenen, 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 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).
34 general practice dentistry records list a practice address in Danville
They are 34 of the 897 NPPES records with a practice address in Danville, and 17,852 general practice dentistry records in California.
All 17,852 in California → Every provider in Danville → General Practice Dentistry nationwide →
The 8 general practice dentistry records with the nearest ZIP codes
- Cheryl Allan, DDSDanville, CA 945261396854923
- James Giblin, D.D.S.Danville, CA 945261609896141
- David Graham, DDSDanville, CA 945261861502957
- Dino Javaheri, D.D.SDanville, CA 945261366457111
- James Kobayashi, D.D.S.Danville, CA 945261942391909
- Melanie Koehler, DDSDanville, CA 945261265538334
- Douglas Lins, D.D.S.Danville, CA 945261407942964
- Robert Morrish, DDSDanville, CA 945261346332673
Common questions
What is Mark Richard Koenen, DDS's NPI number?
Mark Richard Koenen, DDS's National Provider Identifier (NPI) is 1023111952, issued on Sep 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark Richard Koenen, DDS located?
The NPPES record lists a practice address at 520 LA Gonda Way, Danville, CA, 94526. Phone: (925) 837-6318. Providers update this record themselves, so call before visiting.
How can I verify Mark Richard Koenen, DDS's license?
NPPES lists California license number 36780, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Mark Richard Koenen, DDS prescribe under Medicare Part D?
In 2024, Mark Richard Koenen, DDS had 15 Medicare Part D claims for 12 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.