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Dr. Thomas C. Bailey, MD

Infectious Disease (Infectious Disease Physician)

  • Medicare participating

At a glance

Years since graduation
42
In the NPI registry since
2006
Medicare patients seen, 2024
96

The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is

Education and training

  • 1984Medical school: Washington University School of Medicine
  • 2006Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier

Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).

Specialties and state licenses

  • Infectious Disease Physician primary
    MO license R6F31

As reported to the NPI registry. To confirm a license is current, check the state medical board.

Map: Infectious Disease per capita by county →

Where they work

Hospitals

Medical groups

Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.

Medicare patients and services

Medicare patients, 2024
96
Services billed
185
Patients’ average age
68
Most frequent Medicare services, 2023
ServiceTimesPatients
Established patient office or other outpatient visit, 30-39 minutes5634
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes4341
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes4019
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes1919
Established patient office or other outpatient visit, 20-29 minutes1311

Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.

Medicare prescriptions

Most prescribed drugs, Medicare Part D 2024
DrugPrescriptions
Ethambutol Hcl95
Azithromycin
Other prescribers in Saint Louis, MO
81
Rifampin54
Rifabutin42
Amikacin Sulfate33
Ceftriaxone (ceftriaxone sodium)
Other prescribers in Saint Louis, MO
23
Cefepime Hcl16
Nuzyra (omadacycline tosylate)15

Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.

Other Infectious Disease clinicians in Saint Louis

Sources

NPI registry (CMS NPPES, November 2026; record last updated April 15, 2025), Medicare Care Compare, Medicare Physician & Other Practitioners (2024), Medicare Part D Prescribers (2024) and Open Payments (2025). Information is self-reported or billed data and may be out of date; call before visiting.

NPI 1538187349. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.