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Dr. Stuart W. Allyn, DDS, MD

General Surgery (Surgery Physician)

Medicare and federal program status

Opted out of Medicare from February 12, 2025 through February 12, 2027. Medicare does not pay for this clinician’s services: patients with Medicare sign a private contract and pay the clinician directly.

Source: CMS Medicare Opt Out Affidavits (record last updated April 15, 2025). Opting out is a legal choice many clinicians make, often to run a cash or concierge practice.

At a glance

In the NPI registry since
2018

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. What an NPI is

Education and training

  • 2018Registered with an NPI (national billing number; not a license date)

Medicare’s Care Compare data doesn’t list this clinician’s medical school. 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

  • Surgery Physician primary
    MT license 144637
  • Oral and Maxillofacial Surgery (Dentist)
    MT license DEN-DEN-LIC-28338

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

Map: General Surgery per capita by county →

Medicare prescriptions

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

Other General Surgery clinicians in Missoula

Sources

NPI registry (CMS NPPES, November 2026; record last updated October 15, 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 Information is self-reported or billed data and may be out of date; call before visiting.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 1073016028. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.