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Family Practice

Joanna Billings, DO

Works at hospitals in Missoula, MT · Ronan, MT · Montana

Summary

Dr. Joanna Billings, DO is a family doctor at 126 6th Ave SW, Ronan, MT 59864. Phone: (406) 676-3600. Accepts Medicare assignment. In 2024, Joanna Billings had 42 Original Medicare patients and 123 services. NPI 1447630868. 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 Joanna Billings, 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 Joanna Billings accept Medicare assignment?
Yes. Medicare's clinician data says Joanna Billings 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 Joanna Billings see?
In 2024, CMS data shows 42 Original Medicare patients and 123 services for Joanna Billings. This counts Original Medicare only and measures volume, not quality.
What is Joanna Billings's NPI number?
1447630868. 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 Joanna Billings, 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 patients42
Services billed to Medicare123
Different services or procedures11
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)39 services
  2. Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)32 services
  3. Hospital discharge day management, more than 30 minutes (99239)20 services
  4. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)14 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 blood pressure75%
  • High cholesterol60%
  • Arthritis48%
  • Atrial fibrillation45%
  • COPD40%
  • Depression38%

Hospitals where Joanna Billings works

Medicare's Facility Affiliation Data lists Joanna Billings 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 Joanna Billings is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

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

  • St Lukes Community Hospital60 clinicians in the group

Specialties

Find other Family Practice doctors in Montana →

Other family doctors in Ronan

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

All family doctors in Ronan →

Other clinicians in St Lukes Community Hospital

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

Clinician information

CredentialDO
Medical schoolWashington College Of Physicians And Surgeons
Graduation year2015 (11 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1447630868
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