Elizabeth O Brien, MD
NPI 1831276427 · Pediatrics Physician · Chesterfield, MO
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Elizabeth O Brien, MD is a Pediatrics Physician provider in Chesterfield, MO (NPI 1831276427).
Provider details
- NPI number
- 1831276427
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- R9J85 (MO)
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
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
- 2006-11-01
- Last updated
- 2007-07-08
Frequently asked questions
- What is Elizabeth O Brien's NPI number?
- Elizabeth O Brien's National Provider Identifier (NPI) is 1831276427, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Elizabeth O Brien's specialty?
- Elizabeth O Brien is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Elizabeth O Brien located?
- Elizabeth O Brien's practice location on file with NPPES is 16216 Baxter Rd, Chesterfield, MO 63017.
- What is Elizabeth O Brien's phone number?
- The practice phone number listed in the NPPES registry for Elizabeth O Brien is (636) 530-9999.
- Does Elizabeth O Brien accept Medicare?
- Elizabeth O Brien is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Elizabeth O Brien's NPI active?
- Yes — Elizabeth O Brien's NPI (1831276427) 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.