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Dr. Harmony V. Allison, MD

Gastroenterology (Gastroenterology Physician)

  • Medicare participating

At a glance

Years since graduation
23
In the NPI registry since
2006
Medicare patients seen, 2024
266

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

  • 2003Medical school: University of Vermont 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
    MA license 226967

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
266
Services billed
462
Patients’ average age
68
Most frequent Medicare services, 2023
ServiceTimesPatients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes7740
Established patient office or other outpatient visit, 20-29 minutes7162
Established patient office or other outpatient visit, 30-39 minutes5149
Biopsy of large bowel using a flexible endoscope4949
Removal of polyps or growths of large bowel using an endoscope with mechanical snare4646
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope3938
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes2626
Hospital discharge day management, 30 minutes or less1414
New patient office or other outpatient visit, 45-59 minutes1414
Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope1414

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.

Other Gastroenterology clinicians in Boston

Sources

NPI registry (CMS NPPES, November 2026; record last updated July 21, 2010), 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 1245240704. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.