Mark Workman, CADC-II
Addiction (Substance Use Disorder) Counselor · Oak View, CA
Mark Workman, CADC-II is an addiction (substance use disorder) counselor with a practice address in Oak View, California, and NPI 1407709454, issued on Feb 18, 2026. Check the license (California A053681218, 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 Workman
- Credential
- CADC-II
- Primary taxonomy
- Addiction (Substance Use Disorder) Counselor 101YA0400X
- License number
- A053681218 CA
Self-reported in NPPES; status is on the state search - Practice location
- 158 Rockaway RD, Oak View, CA 93022
- Phone
- (805) 273-8798
- Enumerated
- Feb 18, 2026
- Entity
- Type 1 · individual
Also registered at 158 Rockaway RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Maria Ayala, RADTCase Manager/Care Coordinator1790636215
- Jennifer Cruz, SUDRCBehavior Technician1932070364
- Kristina FosterPeer Specialist1992687974
- Charlotte GrantSocial Worker1386132892
- Tuesday HightLicensed Vocational Nurse1760346969
- Mattthew Malloy, CADC-IIAddiction (Substance Use Disorder) Counselor1982596318
Verify Mark Workman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license A053681218Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
3 addiction (substance use disorder) counselor records list a practice address in Oak View
They are 3 of the 38 NPPES records with a practice address in Oak View, and 27,741 addiction (substance use disorder) counselor records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 3 in Oak View → All 27,741 in California → Every provider in Oak View →
Other addiction (substance use disorder) counselor records in California
- Sean A Jerome, CADCIICosta Mesa, CA1831884550
- Carrie AamodtVisalia, CA1932661311
- Emory Aaron, CCAPP C4321214Los Angeles, CA1073980801
- Lisa Aaron, CASACCulver City, CA1356090849
- Michael Abacherli, JD, RADTSan Jacinto, CA1235826983
- Victor AbadEl Cajon, CA1205562238
- Sean AbairTaft, CA1174084347
- Maira AbalosDelano, CA1508452038
- Jazmine AbanicoVentura, CA1851964613
- Israel Abarca, CAADESan Francisco, CA1114126950
Common questions
What is Mark Workman, CADC-II's NPI number?
Mark Workman, CADC-II's National Provider Identifier (NPI) is 1407709454, issued on Feb 18, 2026. An NPI identifies a provider in billing; it is not a license.
Where is Mark Workman, CADC-II located?
The NPPES record lists a practice address at 158 Rockaway RD, Oak View, CA, 93022. Phone: (805) 273-8798. Providers update this record themselves, so call before visiting.
How can I verify Mark Workman, CADC-II's license?
NPPES lists California license number A053681218, 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), loaded Aug 27, 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) 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 27, 2026.