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Orthopedic Surgery

Galen Mills, MD

Works at hospitals in Billings, MT · Cody, WY · Lovell, WY … · Montana, Wyoming

Summary

Dr. Galen Mills, MD is an orthopedic surgeon at 2702 8th Ave N, Billings, MT 59101. Phone: (406) 238-5254. Accepts Medicare assignment. In 2024, Galen Mills had 211 Original Medicare patients and 2,535 services. NPI 1528565561. 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 Galen Mills, 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 Galen Mills accept Medicare assignment?
Yes. Medicare's clinician data says Galen Mills 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 Galen Mills see?
In 2024, CMS data shows 211 Original Medicare patients and 2,535 services for Galen Mills. This counts Original Medicare only and measures volume, not quality.
What is Galen Mills's NPI number?
1528565561. 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 Galen Mills, 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 patients211
Services billed to Medicare2,535
Different services or procedures63
Participating Medicare providerYes
Average age of these patients73

Most frequent services

  1. Injection, bupivicaine, not otherwise specified, 0.5 mg (J0665)1,500 services
  2. Injection, methylprednisolone acetate, 1 mg (J1010)570 services
  3. Injection, triamcinolone acetonide, not otherwise specified, 10 mg (J3301)64 services
  4. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)59 services
  5. New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)49 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).

  • Arthritis75%
  • High cholesterol63%
  • High blood pressure62%
  • Diabetes26%
  • Depression22%
  • Anxiety18%

Hospitals where Galen Mills works

Medicare's Facility Affiliation Data lists Galen Mills 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.

  • Billings Clinic HospitalBillings, MT · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 270004
  • Cody Regional HealthCody, WY · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 531312
  • North Big Horn Hospital DistrictLovell, WY · Critical Access Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 531309
  • Powell Valley HospitalPowell, WY · Critical Access Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 531310
  • South Big Horn County HospitalBasin, WY · Critical Access Hospital · Emergency services: listed by Medicare · CCN 531301

Practice locations

Addresses where Galen Mills is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Galen Mills as a member of this group (CMS data updated October 2, 2026).

  • Billings Clinic Specialty Supplies and Services, LLC824 clinicians in the group

Specialties

Find other Orthopedic Surgery doctors in Montana →

Other orthopedic surgeons in Billings

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

All orthopedic surgeons in Billings →

Other clinicians in Billings Clinic Specialty Supplies and Services, LLC

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

Clinician information

CredentialMD
Graduation year2018 (8 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1528565561
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