Dr. Anna Elizabeth Gerst , MD
Pediatrics β’ O Fallon, MO
9979 Winghaven Blvd Ste 206
O Fallon, MO 633683628
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
Practice Location & Contact Primary Location
9979 Winghaven Blvd Ste 206
O Fallon, MO 633683628
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
Pediatrics: NPPES taxonomy is a reported classification, not proof of board certification.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2019β2025.
NPI first issued
2023
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, βDoes your provider accept Medicare as full payment?β
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Compared with the same specialty in O Fallon and Missouri
20 active clinicians are listed under Pediatrics with a practice address in O Fallon, MO (1,562 in Missouri).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in O Fallon
0% of these 20 clinicians have the CMS telehealth indicator.
0% of these 20 clinicians are listed by CMS as accepting Medicare assignment.
Sources: CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo Β· Report an error.
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2026-07-31NUCC Taxonomy Code: 208000000X
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.
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 9979 WINGHAVEN BLVD STE 206, O FALLON, MO 633683628 (Tel: 6365615291)
Registered at PO BOX 419052, SAINT LOUIS, MO 631419052 (Tel: 3148511000)
Pediatrics (license number reported to NPPES: MO 2026036180)
NPI status registered as active in NPPES database
Registered at 1 CHILDRENS PL, SAINT LOUIS, MO 631101081 (Tel: 3144546006)
Registered at 660 S EUCLID AVE STE 3S34, SAINT LOUIS, MO 631101010 (Tel: 3144546006)
Recorded as ANNA GERST, MD
Pediatrics (license number reported to NPPES: MO 2023021916)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Pediatrics Specialists in O Fallon
Healthcare providers in O FallonMailing Address
Po Box 419052
Saint Louis, MO 631419052
Phone: 3148511000