Gillian Messinger, PH.D.
NPI 1134350846 · Psychologist · Kildeer, IL
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gillian Messinger, PH.D. is a Psychologist provider in Kildeer, IL (NPI 1134350846).
Provider details
- NPI number
- 1134350846
- Entity type
- Individual
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Credential
- PH.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 071.007113 (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
16 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
- 2009-07-29
- Last updated
- 2015-04-10
Frequently asked questions
- What is Gillian Messinger's NPI number?
- Gillian Messinger's National Provider Identifier (NPI) is 1134350846, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gillian Messinger's specialty?
- Gillian Messinger is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
- Where is Gillian Messinger located?
- Gillian Messinger's practice location on file with NPPES is 22440 Prairie Ln, Kildeer, IL 60047-9764.
- What is Gillian Messinger's phone number?
- The practice phone number listed in the NPPES registry for Gillian Messinger is (847) 989-3965.
- Does Gillian Messinger accept Medicare?
- Gillian Messinger is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gillian Messinger's NPI active?
- Yes — Gillian Messinger's NPI (1134350846) is active in the NPPES registry as of the last update on 2015-04-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.