Grant Greenberg, L.C.S.W
NPI 1528490075 · Clinical Social Worker · Portsmouth, VA
Enrolled with Medicare as Order and Referring Only - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Grant Greenberg, L.C.S.W is a Clinical Social Worker provider in Portsmouth, VA (NPI 1528490075).
Provider details
- NPI number
- 1528490075
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- L.C.S.W
- Sex
- Male
- Sole proprietor
- Yes
- License
- SW130180 (PA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
12 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Mailing address
Additional practice locations (1)
- Farenholt Ave Bldg 50Agana Heights, GU 69610Phone: (671) 339-3205
Registry dates
- Enumerated
- 2013-08-07
- Last updated
- 2025-01-30
- Certified
- 2025-01-30
Frequently asked questions
- What is Grant Greenberg's NPI number?
- Grant Greenberg's National Provider Identifier (NPI) is 1528490075, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Grant Greenberg's specialty?
- Grant Greenberg is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Grant Greenberg located?
- Grant Greenberg's practice location on file with NPPES is 620 John Paul Jones Cir, Portsmouth, VA 23708-2111.
- What is Grant Greenberg's phone number?
- The practice phone number listed in the NPPES registry for Grant Greenberg is (757) 953-5000.
- Does Grant Greenberg accept Medicare?
- Grant Greenberg is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Grant Greenberg's NPI active?
- Yes — Grant Greenberg's NPI (1528490075) is active in the NPPES registry as of the last update on 2025-01-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.