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Family Practice

Stefanie K. Lange, MD

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

Summary

Dr. Stefanie K. Lange, MD is a family doctor at 10 4th St W, Suite B, Hardin, MT 59034. Phone: (406) 665-4103. May accept Medicare assignment. In 2024, Stefanie K. Lange had 18 Original Medicare patients and 34 services. NPI 1609800788. 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.

  • Specialty: Family doctor (Medicare lists Family Practice)
  • Address: 10 4th St W, Suite B, Hardin, MT 59034 · Directions (3 more locations)
  • Phone: (406) 665‑4103
  • Medicare: May accept Medicare assignment
  • Hospitals: Bozeman Health Deaconess Hospital, Livingston Healthcare
  • Group practice: Bighorn Valley Health Center Incorporated (+1 more)
  • Medical school: Tulane University School Of Medicine · graduated 2004 (22 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Stefanie K. Lange, 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 Stefanie K. Lange accept Medicare assignment?
Medicare's clinician data says Stefanie K. Lange may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
How many Medicare patients does Stefanie K. Lange see?
In 2024, CMS data shows 18 Original Medicare patients and 34 services for Stefanie K. Lange. This counts Original Medicare only and measures volume, not quality.
What is Stefanie K. Lange's NPI number?
1609800788. 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 Stefanie K. Lange, 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 patients18
Services billed to Medicare34
Different services or procedures8
Participating Medicare providerYes
Average age of these patients69

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 blood pressure72%
  • Diabetes61%

Hospitals where Stefanie K. Lange works

Medicare's Facility Affiliation Data lists Stefanie K. Lange 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.

  • Bozeman Health Deaconess HospitalBozeman, MT · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 270057
  • Livingston HealthcareLivingston, MT · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 271317

Practice locations

Addresses where Stefanie K. Lange is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Stefanie K. Lange as a member of these groups (CMS data updated October 2, 2026).

  • Bighorn Valley Health Center Incorporated79 clinicians in the group
  • Community Health Partners Inc31 clinicians in the group

Specialties

Find other Family Practice doctors in Montana →

Other family doctors in Hardin

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

All family doctors in Hardin →

Other clinicians in Bighorn Valley Health Center Incorporated

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

Clinician information

CredentialMD
Medical schoolTulane University School Of Medicine
Graduation year2004 (22 years since medical school)
Gender (as listed)Female
Medicare assignmentMay accept for some services
NPI (National Provider Identifier)1609800788
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