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Gregory Armstrong
NPI 1780392548 · Case Manager/Care Coordinator · Oakland, CA
Gregory Armstrong is a Case Manager/Care Coordinator provider in Oakland, CA (NPI 1780392548).
Provider details
- NPI number
- 1780392548
- Entity type
- Individual
- Primary specialty
- Case Manager/Care CoordinatorOther Service Providers
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Other Service Providers
Profile Score
Established profile(53/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
3 yrs in NPPES registry
- Profile completeness38% of score
83% 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
9925 International Blvd
Oakland, CA 94603-2558
Phone: (510) 777-1177
Fax: (510) 550-2644
Street-level locationGet directions
Mailing address
9925 International Blvd
Oakland, CA 94603-2558
Registry dates
- Enumerated
- 2022-11-10
- Last updated
- 2022-11-10
- Certified
- 2022-11-10
Frequently asked questions
- What is Gregory Armstrong's NPI number?
- Gregory Armstrong's National Provider Identifier (NPI) is 1780392548, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Armstrong's specialty?
- Gregory Armstrong is listed in the NPPES registry with a primary specialty of Case Manager/Care Coordinator (Other Service Providers).
- Where is Gregory Armstrong located?
- Gregory Armstrong's practice location on file with NPPES is 9925 International Blvd, Oakland, CA 94603-2558.
- What is Gregory Armstrong's phone number?
- The practice phone number listed in the NPPES registry for Gregory Armstrong is (510) 777-1177.
- Is Gregory Armstrong's NPI active?
- Yes — Gregory Armstrong's NPI (1780392548) is active in the NPPES registry as of the last update on 2022-11-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.