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Dr. William B. Baker III, M.D.

Emergency Medicine (Emergency Medicine Physician)

  • Medicare participating

At a glance

Years since graduation
17
In the NPI registry since
2009
Medicare patients seen, 2024
471

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. What an NPI is

Education and training

  • 2009Medical school: University of Arkansas College of Medicine
  • 2009Registered with an NPI (national billing number; not a license date)

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

  • Emergency Medicine Physician primary
    AR license E-6678 · MO license 2012037984

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

Map: Emergency Medicine 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
471
Services billed
519
Patients’ average age
75
Most frequent Medicare services, 2023
ServiceTimesPatients
Emergency department visit with moderate level of medical decision making271261
Emergency department visit with high level of medical decision making264248
Emergency department visit with low level of medical decision making189179
Critical care, first 30-74 minutes2727
Emergency department visit with straightforward medical decision making2222

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
Hydrocodone-Acetaminophen (hydrocodone/acetaminophen)
Other prescribers in Jonesboro, AR
16

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

Other Emergency Medicine clinicians in Jonesboro

Sources

NPI registry (CMS NPPES, November 2026; record last updated November 7, 2012), 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 1942442900. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.