Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Internal Medicine

Anna E. Bailey, MD

Works at hospitals in Saint Peters, MO · Saint Louis, MO · Missouri

Summary

Anna E. Bailey, MD (Internal Medicine) is listed by Medicare at 5 hospitals in Saint Peters, MO and Saint Louis, MO. NPI 1811482250. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Anna E. Bailey, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Internal MedicinePrimary specialty
YesAccepts Medicare assignment
YesOffers telehealth
8Years since medical school (graduated 2018)
FemaleGender (as listed)
Mercy Clinic East CommunitiesGroup practice (+1 more)

Quick answers

Which hospitals does Anna E. Bailey work at?
Medicare's official clinician data lists Anna E. Bailey at 5 hospitals: Barnes-Jewish St Peters Hospital, Christian Hospital Northeast, Mercy Hospital South, Mercy Hospital St Louis and SSM Health St Mary's Hospital - St Louis. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Anna E. Bailey see patients?
Medicare's clinician data lists 2 practice locations, including O Fallon, MO and Saint Louis, MO. Call before your visit to confirm the address.
What is Anna E. Bailey's specialty?
Medicare lists Internal Medicine as the primary specialty.
Does Anna E. Bailey accept Medicare assignment?
Yes. Medicare's clinician data says Anna E. Bailey accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
Does Anna E. Bailey offer telehealth?
Medicare's clinician data says Anna E. Bailey offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for Anna E. Bailey?
(636) 240-5454, as listed in official Medicare / NPI Registry data.
What is Anna E. Bailey's NPI number?
1811482250. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Anna E. Bailey works

Medicare's Facility Affiliation Data lists Anna E. Bailey at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Anna E. Bailey is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Anna E. Bailey as a member of these groups (CMS data updated 2026-10-02).

  • Mercy Clinic East Communities571 clinicians in the group
  • Physician Groups LC521 clinicians in the group

Specialties

Find other Internal Medicine doctors in Missouri →

Other internal medicine doctors in O Fallon

Clinicians with the same Medicare primary specialty in O Fallon, MO — not a recommendation.

All internal medicine doctors in O Fallon →

Clinician information

CredentialMD
Graduation year2018
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1811482250
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians