Gillian Long, DO
NPI 1831849868 · Pediatrics Physician · St Louis, MO
Enrolled with Medicare as Order and Referring Only - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gillian Long, DO is a Pediatrics Physician provider in St Louis, MO (NPI 1831849868).
Provider details
- NPI number
- 1831849868
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- No
- License
- 2025032346 (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
4 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
- 2022-03-24
- Last updated
- 2026-06-03
- Certified
- 2026-06-03
Frequently asked questions
- What is Gillian Long's NPI number?
- Gillian Long's National Provider Identifier (NPI) is 1831849868, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gillian Long's specialty?
- Gillian Long is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Gillian Long located?
- Gillian Long's practice location on file with NPPES is 1 Childrens Pl Msc 8208-0016-06, St Louis, MO 63110.
- What is Gillian Long's phone number?
- The practice phone number listed in the NPPES registry for Gillian Long is (314) 454-6124.
- Does Gillian Long accept Medicare?
- Gillian Long is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gillian Long's NPI active?
- Yes — Gillian Long's NPI (1831849868) is active in the NPPES registry as of the last update on 2026-06-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.