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Dr. Robert T. Kizer, MD

Gastroenterology (Gastroenterology Physician)

  • Medicare participating

At a glance

Years since graduation
25
In the NPI registry since
2006
Medicare patients seen, 2024
324

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

  • 2001Medical school: University of Nebraska College 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

  • Gastroenterology Physician primary
    NE license 23215 · IA license MD-39902

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

Map: Gastroenterology 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
324
Services billed
528
Patients’ average age
74
Most frequent Medicare services, 2023
ServiceTimesPatients
Removal of polyps or growths of large bowel using an endoscope with mechanical snare109108
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes8458
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope6663
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes5656
Established patient office or other outpatient visit, 30-39 minutes3532
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes3333
Established patient office or other outpatient visit, 20-29 minutes2928
Biopsy of large bowel using a flexible endoscope2121
Insertion of guide wire with dilation of esophagus using a flexible endoscope1918
New patient office or other outpatient visit, 30-44 minutes1414

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
Gavilyte-G (peg3350/sod sulf,bicarb,cl/kcl)
Other prescribers in Omaha, NE
131
Omeprazole
Other prescribers in Omaha, NE
115
Peg-3350 And Electrolytes (peg3350/sod sulf,bicarb,cl/kcl)
Other prescribers in Omaha, NE
70
Stelara (ustekinumab)32
Sod Sulf-Potass Sulf-Mag Sulf (sodium, potassium,mag sulfates)
Other prescribers in Omaha, NE
29
Pantoprazole Sodium
Other prescribers in Omaha, NE
19
Clenpiq (sod picosulf/mag ox/citric ac)15
Peg 3350-Electrolyte (sodium chloride/nahco3/kcl/peg)14
Nortriptyline Hcl
Other prescribers in Omaha, NE
13

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

Payments from drug and device companies

In 2025, 12 companies reported 34 payments worth $677 in total to this clinician.

By type
Food and Beverage$567
Education$109

What the payments were for

Largest payments other than meals
DateCompanyWhat it was forAmount
Jun 26, 2025Janssen Biotech, Inc.
Jun 26, 2025
Education
TREMFYA · Immunology · in-kind
$99.00
Apr 29, 2025Janssen Pharmaceuticals, Inc
Apr 29, 2025
Education
in-kind
$10.48

Each payment as the company reported it, with the products it named. Meals are counted in the totals above but not listed one by one.

From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.

Who received the most in Nebraska →

Industry-funded research

Named as a principal investigator on 3 industry-funded studies in 2025, from 1 companies. The companies reported $1,505 in research payments for these studies, mostly to the institutions running them.

From CMS Open Payments research payments, where companies name up to five principal investigators per payment. Research payments usually go to hospitals, universities and research sites, not to the investigator personally. A payment is not evidence of wrongdoing.

Other Gastroenterology clinicians in Omaha

Sources

NPI registry (CMS NPPES, November 2026; record last updated July 28, 2023), 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 1770500514. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.