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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. ANNA ELIZABETH GERST MD
NPI 1649955535
Pediatrics in O Fallon, MO

Active since June 19, 2023
9979 WINGHAVEN BLVD STE 206, O FALLON, MO 63368(636) 561-5291(636) 561-5290 Get Directions Write a Review

NPPES record last updated: July 31, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jul 31, 2026, Jul 23, 2023, Jun 19, 2023 (3 updates tracked since 2023).

About Dr. Anna Elizabeth Gerst Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. ANNA ELIZABETH GERST MD (NPI 1649955535) is an individual pediatrics provider in O Fallon, Missouri, licensed in Missouri (2026036180) and active in the NPI registry since June 2023.

NPPES Registry Identity

NPI1649955535
Entity TypeIndividualFemale
Primary Taxonomy208000000X
Provider Legal NameDR. ANNA ELIZABETH GERSTCredential: MD
Location Address9979 WINGHAVEN BLVD STE 206O Fallon, MO 63368-3628
Mailing AddressPo Box 419052Saint Louis, MO 63141-9052 · (314) 851-1000
Phone(636) 561-5291
Fax(636) 561-5290
Sole ProprietorNo
Enumeration DateJune 19, 2023
Last NPPES UpdateJuly 31, 20263 updates tracked since enumeration
NPPES CertifiedJuly 31, 2026
✔ NPI 1649955535 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in MO · 2026036180
Definition
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
9979 WINGHAVEN BLVD STE 206, O Fallon, MO 63368
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Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MELISSA ROEWE DO
Pediatrics
9979 WINGHAVEN BLVD STE 206
O FALLON, MO 63368
St. Charles County (636) 561-5291

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Anna Gerst's NPI number?

The NPI number for Anna Gerst is 1649955535. It was assigned to this individual provider in the NPPES registry on June 19, 2023.

Where is Anna Gerst located?

Anna Gerst practices at 9979 Winghaven Blvd Ste 206, O Fallon, MO 63368. The listed phone number is (636) 561-5291.

What is Anna Gerst's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

When was this NPI record last updated?

The NPPES record for Anna Gerst was last updated on July 31, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.