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Dr. Gregory J. Baker, DO

Neurology (Neurology Physician)

  • Medicare participating

At a glance

Years since graduation
26
In the NPI registry since
2006
Medicare patients seen, 2024
473

Licensed in Texas since 2023, according to the Texas Medical Board. We show license dates only for the states that publish them in bulk; see which states do. For other states, check the state medical board.

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

  • 2000Medical school: Michigan State University College of Osteopathic 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

  • Neurology Physician primary
    NV license DO1473 · AZ license 005134 · FL license TPOS607 · FL license OS20365 · IN license OS20365 · MS license 31889 · TN license 5330 · TX license U4060 (first issued 2023; active) · WV license 4170

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

Map: Neurology per capita by county →

Where they work

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
473
Services billed
508
Patients’ average age
76
Most frequent Medicare services, 2023
ServiceTimesPatients
Telehealth consultation, emergency department or initial inpatient, typically 50 minutes communicating with the patient via telehealth150150
Measurement of brain wave activity (eeg), awake and drowsy6558
Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes2626
Follow-up inpatient consultation, complex, physicians typically spend 35 minutes communicating with the patient via telehealth2218
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes2114
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes1515

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.

Other Neurology clinicians in Las Vegas

Sources

NPI registry (CMS NPPES, November 2026; record last updated October 11, 2026), 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 1497775522. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.