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

Gregory Ronald Armstrong Sr.

Individual provider Case Manager/Care Coordinator · NPI 1780392548

Gregory Ronald Armstrong Sr. is a Case Manager/Care Coordinator in Oakland, California. Registered with an NPI since 2022.

In the registry since
2022

Practice location Address checks out

9925 International Blvd
Oakland, CA 94603-2558
Phone: (510) 777-1177
Fax: (510) 550-2644
Show map & directions

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

Specialties & licences

Case Manager/Care Coordinator (primary) Taxonomy 171M00000X

Record details

NPI number1780392548
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedNovember 10, 2022
Last updated in NPPESNovember 10, 2022
Certification dateNovember 10, 2022
Mailing address9925 International Blvd, Oakland, CA 94603-2558

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