Summary

Dr. Joan McMahon is an internal medicine physician who also specializes in hospital medicine and pediatrics. She earned her medical degree from St. Louis University School of Medicine and completed her residency at Charleston Area Medical Center. With three decades of medical practice, Dr. McMahon brings extensive experience to her comprehensive approach to patient care.

Dr. McMahon practices at Vista Plains Health and Central Montana Medical Center, with locations in Lewistown and Harlowton, Montana. She focuses on treating patients with chronic lung conditions such as COPD and other breathing disorders that may occur alongside additional health concerns. Her practice also includes breast cancer screening services and coordinating physical therapy for patients who need rehabilitative care. Patients consistently rate Dr. McMahon highly, giving her an average rating of 5.0 on Vitals.

AI-generated from data on this provider profile.

Quick Facts

  • accepting new patients
  • 5
  • 30 years of experience
  • Charleston Area Medical Center
  • 1 written review
  • 3 specialties
  • 5 areas of expertise
  • 3 board certifications
  • 2 hospital affiliations
  • 3 office locations
  • Female

Office Locations

Dr. Joan Marie Mcmahon has 3 locations

Central Montana Medical Center

408 Wendell AveLewistown, MT 59457

Cmmc Clinic Physicians

408 Wendell Ave Ste 1Lewistown, MT 59457
Mon8:00 am - 5:00 pm
Tue8:00 am - 5:00 pm
Wed8:00 am - 5:00 pm
Thu8:00 am - 5:00 pm
Fri8:00 am - 5:00 pm
SatClosed
SunClosed

Wheatland Memorial Healthcare

530 3rd St NwHarlowton, MT 59036

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Dr. Joan Marie Mcmahon, MD
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Dr. Joan Marie Mcmahon, MDDr. Jessica Lynn Genninger Patterson, MDDr. Richard N Taylor, MDDr. Edward Donnall Thomas Jr, MD
Internal MedicinePediatricsInternal MedicineInternal Medicine
Accepts New Patients
30 Years of Experience 12 Years of Experience 53 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option
Speaks English, German
Lewistown , MTPhiladelphia , PALewistown , MTLewistown , MT
Med School: St Louis University School Of Medicine Med School: Columbia University College Of Physicians & Surgeons Med School: University Of Virginia School Of Medicine
Current Profile
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Insurance Plans Accepted by Dr. Joan Marie Mcmahon

Be sure to verify insurance information directly with your doctor's office, as it may undergo frequent changes.

Medical Specialties

Dr. Joan Marie Mcmahon has the following 3 specialties

Specialty Expertise

Dr. Joan Marie Mcmahon has the following 5 areas of expertise

  • Accidents
  • Hospital Medicine
  • Injury
  • Pediatrics
  • Trauma

Certifications, License, & Education

30 Years Experience

MEDICAL LICENSE

Medical Doctor, Montana, 2026, Expired

EDUCATION & TRAINING

Residency

Charleston Area Medical Center

Medical School

St Louis University School Of MedicineGraduated in 1996

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Frequently Asked Questions

Which hospitals is Dr. Joan Mcmahon affiliated with?
Dr. Joan Mcmahon is affiliated with Vista Plains Health and Central Montana Medical Center.
Where is Dr. Joan Mcmahon's office located?
Dr. Joan Mcmahon's office is located at 408 Wendell Ave, Lewistown, MT, 59457.
Does Dr. Joan Mcmahon accept my insurance?
You can see the insurance plans that Dr. Joan Mcmahon accepts on their Vitals profile.
Is Dr. Joan Mcmahon accepting new patients?
Dr. Joan Mcmahon is accepting new patients on Vitals. View Dr. Joan Mcmahon's profile on Vitals to make an appointment.
Does Dr. Joan Mcmahon accept virtual/telehealth appointments?
Dr. Joan Mcmahon has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.

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