Thomas Messner, CAS
NPI 1619144250 · Addiction (Substance Use Disorder) Counselor · Antioch, CA
Thomas Messner, CAS is a Addiction (Substance Use Disorder) Counselor provider in Antioch, CA (NPI 1619144250).
Provider details
- NPI number
- 1619144250
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Credential
- CAS
- Sex
- Male
- Sole proprietor
- No
- License
- 02-021220 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-05-13
- Last updated
- 2008-05-13
Frequently asked questions
- What is Thomas Messner's NPI number?
- Thomas Messner's National Provider Identifier (NPI) is 1619144250, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Messner's specialty?
- Thomas Messner is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Thomas Messner located?
- Thomas Messner's practice location on file with NPPES is 1408 a St, Antioch, CA 94509-2331.
- What is Thomas Messner's phone number?
- The practice phone number listed in the NPPES registry for Thomas Messner is (925) 978-2873.
- Is Thomas Messner's NPI active?
- Yes — Thomas Messner's NPI (1619144250) is active in the NPPES registry as of the last update on 2008-05-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.