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Dr. Michael Vaezi, MD, PHD

Gastroenterology (Gastroenterology Physician)

  • Medicare participating

At a glance

Years since graduation
34
In the NPI registry since
2006
Medicare patients seen, 2024
243

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

  • 1992Medical school: University of Alabama 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

  • Gastroenterology Physician primary
    TN license MD40379

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
243
Services billed
556
Patients’ average age
72
Most frequent Medicare services, 2023
ServiceTimesPatients
Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope154114
Dilation of esophagus144101
Balloon dilation of esophagus, stomach, and/or upper small bowel using a flexible endoscope, less than 3.0 cm14385
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope8277
Established patient office or other outpatient visit, 10-19 minutes4646
Study of esophagus to assess movement3131
New patient office or other outpatient visit, 30-44 minutes3030
Monitoring and recording of esophageal function through a capsule attached to the esophagus wall2121
Established patient office or other outpatient visit, 20-29 minutes1818
Biopsy of large bowel using a flexible endoscope1212

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

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

Industry-funded research

Named as a principal investigator on 2 industry-funded studies in 2025, from 2 companies. The companies reported $85,231 in research payments for these studies, mostly to the institutions running them.

  • A Phase 3, Multi-Center, Multi-National, Open-Label Extension Study to Evaluate the Long Term Efficacy and Safety of CC-93538 in Adult and Adolescent Subjects with Active Eosinophilic Esophagitis.
    Celgene Corporation
  • A Phase 3, Multi-Center, Multi-National, Open-Label Extension Study to Evaluate the Long Term Efficacy and Safety of CC-93538 in Adult and Adolescent Subjects with Active Eosinophilic Esophagitis.
    E.r. Squibb & Sons, L.l.c.

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 Nashville

Sources

NPI registry (CMS NPPES, November 2026; record last updated March 14, 2022), 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 1861576977. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.