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

Gregory Donald Isom

Individual provider Counselor · NPI 1619674868

Gregory Donald Isom is a Counselor in Vallejo, California. Registered with an NPI since 2023.

In the registry since
2023
Specialties on file
4

Practice location Address checks out

160 Glen Cove Marina Rd E
Vallejo, CA 94591-7290
Phone: (707) 648-2000
Show map & directions

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

Specialties & licences

Day Training/Habilitation Specialist (primary) Taxonomy 373H00000X
Counselor Taxonomy 101Y00000X
Mental Health Counselor Taxonomy 101YM0800X
Community Health Worker Taxonomy 172V00000X

Record details

NPI number1619674868
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedFebruary 8, 2023
Last updated in NPPESAugust 14, 2025
Certification dateAugust 14, 2025
Mailing address801 Greenmont Dr, Vallejo, CA 94591-7642

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