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

Mr. James Clark Gessner, ADDICTIONSPECIALIST

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1225199227

Mr. James Clark Gessner, ADDICTIONSPECIALIST is an Addiction (Substance Use Disorder) Counselor in Clearlake, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2006

Practice location Address checks out

7000 S Center Dr
Clearlake, CA 95422-7000
Phone: (707) 994-6414
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 G0402270902 (CA)

Record details

NPI number1225199227
Entity typeIndividual (Type 1)
GenderMale
Credentials ADDICTIONSPECIALIST
Sole proprietorYes
NPI enumeratedDecember 13, 2006
Last updated in NPPESJuly 8, 2007

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