Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Thomas C Messner, CAS

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1619144250

Thomas C Messner, CAS is an Addiction (Substance Use Disorder) Counselor in Antioch, California. Licensed in California. Registered with an NPI since 2008.

Licensed in
CA
In the registry since
2008

Practice location Address checks out

1408 A St
Antioch, CA 94509-2331
Phone: (925) 978-2873
Fax: (925) 757-0411
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Addiction (Substance Use Disorder) Counselor (primary) Taxonomy 101YA0400X · Licence 02-021220 (CA)

Record details

NPI number1619144250
Entity typeIndividual (Type 1)
GenderMale
Credentials CAS
Sole proprietorNo
NPI enumeratedMay 13, 2008
Last updated in NPPESMay 13, 2008
Mailing address1408 A St, Antioch, CA 94509-2331

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