Gregory Brenneisen, LCSW
NPI 1548327422 · Clinical Social Worker · Manteno, IL
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gregory Brenneisen, LCSW is a Clinical Social Worker provider in Manteno, IL (NPI 1548327422).
Provider details
- NPI number
- 1548327422
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Male
- Sole proprietor
- No
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
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
- 2007-01-02
- Last updated
- 2007-07-08
Frequently asked questions
- What is Gregory Brenneisen's NPI number?
- Gregory Brenneisen's National Provider Identifier (NPI) is 1548327422, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Brenneisen's specialty?
- Gregory Brenneisen is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Gregory Brenneisen located?
- Gregory Brenneisen's practice location on file with NPPES is 1 Veterans Drive, Manteno, IL 60950.
- What is Gregory Brenneisen's phone number?
- The practice phone number listed in the NPPES registry for Gregory Brenneisen is (815) 468-6581.
- Does Gregory Brenneisen accept Medicare?
- Gregory Brenneisen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gregory Brenneisen's NPI active?
- Yes — Gregory Brenneisen's NPI (1548327422) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.