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Dr. Gregory W. Cotter, M.D.

Radiation Oncology (Radiation Oncology Physician)

4950 Essen Ln Ste 500
Baton Rouge, LA 70809

Who else practices at this address →

East Baton Rouge Parish includes primary care (46% of residents) shortage areas. About shortage areas

Call (225) 767-0847

  • Medicare participating

At a glance

Years since graduation
46
In the NPI registry since
2005
Medicare patients seen, 2024
93

Licensed in Alabama since 1981, according to the Alabama Board of Medical Examiners and Medical Licensure Commission. 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

  • 1980Medical school: University of South Alabama College of Medicine
  • 2005Registered 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

  • Radiation Oncology Physician primary
    LA license 308265 · AL license 9773 (first issued 1981; active) · MS license 15829 · SC license 11773 · TN license 47775

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

Map: Radiation Oncology 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
93
Services billed
3,556
Patients’ average age
74
Most frequent Medicare services, 2023
ServiceTimesPatients
Ct guidance for insertion of radiation therapy fields60745
Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session21922
Radiation treatment management, 5 treatment sessions18551
Calculation of radiation therapy dose12232
Design and construction of complex radiation treatment device11353
Established patient office or other outpatient visit, 20-29 minutes6663
Continuing radiation therapy consultation per week5220
Established patient office or other outpatient visit, 30-39 minutes3535
New patient office or other outpatient visit, 60-74 minutes3232
Obtaining data needed to develop the optimal radiation treatment, 1 treatment area2217

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 Baton Rouge, LA
25
Tamsulosin Hcl
Other prescribers in Baton Rouge, LA
25

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

Other Radiation Oncology clinicians in Baton Rouge

Sources

NPI registry (CMS NPPES, November 2026; record last updated February 6, 2024), 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 1659363067. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.