Gregory Washington
NPI 1174259329 · Group Psychotherapy Psychologist · Flossmoor, IL
Gregory Washington is a Group Psychotherapy Psychologist provider in Flossmoor, IL (NPI 1174259329).
Provider details
- NPI number
- 1174259329
- Entity type
- Individual
- Primary specialty
- Group Psychotherapy PsychologistBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
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
4 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
Mailing address
Registry dates
- Enumerated
- 2022-07-29
- Last updated
- 2022-07-29
- Certified
- 2022-07-29
Frequently asked questions
- What is Gregory Washington's NPI number?
- Gregory Washington's National Provider Identifier (NPI) is 1174259329, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Washington's specialty?
- Gregory Washington is listed in the NPPES registry with a primary specialty of Group Psychotherapy Psychologist (Behavioral Health & Social Service Providers).
- Where is Gregory Washington located?
- Gregory Washington's practice location on file with NPPES is 1417 Lawrence Cres, Flossmoor, IL 60422-1716.
- What is Gregory Washington's phone number?
- The practice phone number listed in the NPPES registry for Gregory Washington is (773) 544-8221.
- Is Gregory Washington's NPI active?
- Yes — Gregory Washington's NPI (1174259329) is active in the NPPES registry as of the last update on 2022-07-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.