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Anesthesiology

Zachary R. Hesse, MD

Works at hospitals in Billings, MT · Bozeman, MT · Montana

Summary

Dr. Zachary R. Hesse, MD is an anesthesiologist at 925 Highland Blvd, Suite 1180, Bozeman, MT 59715. Phone: (406) 587-8631. Accepts Medicare assignment. In 2024, Zachary R. Hesse had 191 Original Medicare patients and 228 services. NPI 1922363092. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

From official Medicare data

This page shows what Medicare's official clinician data says about Zachary R. Hesse, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Zachary R. Hesse accept Medicare assignment?
Yes. Medicare's clinician data says Zachary R. Hesse accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Zachary R. Hesse see?
In 2024, CMS data shows 191 Original Medicare patients and 228 services for Zachary R. Hesse. This counts Original Medicare only and measures volume, not quality.
What is Zachary R. Hesse's NPI number?
1922363092. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Zachary R. Hesse, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients191
Services billed to Medicare228
Different services or procedures56
Participating Medicare providerYes
Average age of these patients73

Most frequent services

  1. Anesthesia for lens surgery (00142)26 services
  2. Anesthesia for exam of colon using an endoscope (00812)24 services
  3. Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)18 services
  4. Anesthesia for other procedure on large bowel using an endoscope (00811)17 services
  5. Anesthesia for procedure for total knee joint replacement (01402)15 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High cholesterol59%
  • High blood pressure58%
  • Arthritis55%
  • Depression20%
  • Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)18%
  • Anxiety17%

Hospitals where Zachary R. Hesse works

Medicare's Facility Affiliation Data lists Zachary R. Hesse at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Zachary R. Hesse is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Zachary R. Hesse as a member of this group (CMS data updated October 2, 2026).

  • Gallatin Valley Anesthesia Associates PC35 clinicians in the group

Specialties

Find other Anesthesiology doctors in Montana →

Other anesthesiologists in Bozeman

Clinicians with the same Medicare primary specialty in Bozeman, MT — not a recommendation.

All anesthesiologists in Bozeman →

Other clinicians in Gallatin Valley Anesthesia Associates PC

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Graduation year2012 (14 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1922363092
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians