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

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1144805011

Marvin Darnell Graddy is an Addiction (Substance Use Disorder) Counselor in Antioch, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2021
Specialties on file
3
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Practice location Address checks out

1320 Rockspring Way
Antioch, CA 94531-8397
Phone: (925) 334-9906
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Addiction (Substance Use Disorder) Psychologist (primary) Taxonomy 103TA0400X · Licence 101YA0400X (CA)
Addiction (Substance Use Disorder) Counselor Taxonomy 101YA0400X · Licence 101YA0400X (CA)
Mental Health Counselor Taxonomy 101YM0800X · Licence 101YA0400X (CA)

Record details

NPI number1144805011
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorYes
NPI enumeratedMarch 12, 2021
Last updated in NPPESMarch 12, 2021
Certification dateMarch 12, 2021
Mailing address3707 Sunset Ln, Antioch, CA 94509-6101

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