Gary Greenberg, PH.D.
NPI 1801942016 · Clinical Psychologist · Northbrook, IL
Gary Greenberg, PH.D. is a Clinical Psychologist provider in Northbrook, IL (NPI 1801942016).
Provider details
- NPI number
- 1801942016
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PH.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 71-1084 (IL)
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
19 yrs in NPPES registry
- Profile completeness38% of score
100% 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
- 2007-01-28
- Last updated
- 2007-07-09
Frequently asked questions
- What is Gary Greenberg's NPI number?
- Gary Greenberg's National Provider Identifier (NPI) is 1801942016, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gary Greenberg's specialty?
- Gary Greenberg is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Gary Greenberg located?
- Gary Greenberg's practice location on file with NPPES is 1500 Shermer Rd, Northbrook, IL 60062-5340.
- What is Gary Greenberg's phone number?
- The practice phone number listed in the NPPES registry for Gary Greenberg is (847) 205-1955.
- Is Gary Greenberg's NPI active?
- Yes — Gary Greenberg's NPI (1801942016) is active in the NPPES registry as of the last update on 2007-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.