Mark Allen Cooper, DDS
Dentist · Clearlake, CA
Mark Allen Cooper, DDS is a dentist with a practice address in Clearlake, California, and NPI 1912926411, issued on Jul 18, 2006. Check the license (California 23996, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Mark Allen Cooper
- Credential
- DDS
- Primary taxonomy
- Dentist 122300000X
- License number
- 23996 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3560 Old Highway 53, Clearlake, CA 95422
- Phone
- (707) 994-9414
- Enumerated
- Jul 18, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (707) 994-6328
- Entity
- Type 1 · individual
8 nearest dentist records → All 14,729 in California → Look up another NPI →
Also registered at 3560 Old Highway 53
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Thomas Hewlett, DDSDentist1144237264
- James Kinsel, DDSDentist1679589618
Verify Mark Allen Cooper in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 23996Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Mark Allen Cooper among 14,729 dentist records in California
Mark Allen Cooper, 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 not. Its NPI, issued in 2006, is newer than 2% of them.
- NPI issued2006 · 2% of these records are older, 82% newer
- In a Medicare fileNo · 56% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2007 · 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).
4 dentist records list a practice address in Clearlake
They are 4 of the 321 NPPES records with a practice address in Clearlake, and 14,729 dentist records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 14,729 in California → Every provider in Clearlake → Dentist nationwide →
The 8 dentist records with the nearest ZIP codes
- Thomas Hewlett, DDSClearlake, CA 954221144237264
- James Kinsel, DDSClearlake, CA 954221679589618
- Siamak Sahand, DMDClearlake, CA 954221609479567
- Audrey Duong, DDSCloverdale, CA 954251437636701
- Kevin Garvin, DDSCloverdale, CA 954251487605747
- Craig Emerson, DDSCovelo, CA 954281194923078
- Toni Mann, DDSBoonville, CA 954151780723981
- Ronald Miller, DDSSonoma, CA 954311497781553
Common questions
What is Mark Allen Cooper, DDS's NPI number?
Mark Allen Cooper, DDS's National Provider Identifier (NPI) is 1912926411, issued on Jul 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark Allen Cooper, DDS located?
The NPPES record lists a practice address at 3560 Old Highway 53, Clearlake, CA, 95422. Phone: (707) 994-9414. Providers update this record themselves, so call before visiting.
How can I verify Mark Allen Cooper, DDS's license?
NPPES lists California license number 23996, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity 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. 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.