Brett Barrett, D.O.
NPI 1124465877 · Pediatric Endocrinology Physician · Oak Lawn, IL
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Brett Barrett, D.O. is a Pediatric Endocrinology Physician provider in Oak Lawn, IL (NPI 1124465877).
Provider details
- NPI number
- 1124465877
- Entity type
- Individual
- Primary specialty
- Pediatric Endocrinology PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- MT210713 (PA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
13 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
- 2013-06-03
- Last updated
- 2021-12-21
- Certified
- 2021-12-21
Frequently asked questions
- What is Brett Barrett's NPI number?
- Brett Barrett's National Provider Identifier (NPI) is 1124465877, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Brett Barrett's specialty?
- Brett Barrett is listed in the NPPES registry with a primary specialty of Pediatric Endocrinology Physician (Allopathic & Osteopathic Physicians).
- Where is Brett Barrett located?
- Brett Barrett's practice location on file with NPPES is 9555 S 52nd Ave, Oak Lawn, IL 60453-3054.
- What is Brett Barrett's phone number?
- The practice phone number listed in the NPPES registry for Brett Barrett is (708) 684-5437.
- Does Brett Barrett accept Medicare?
- Brett Barrett is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Brett Barrett's NPI active?
- Yes — Brett Barrett's NPI (1124465877) is active in the NPPES registry as of the last update on 2021-12-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.