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Megan M. Petersen

Megan M. Petersen, MD

Gynecologic Oncology

Accepting New Patients
Need help scheduling? Call 406-901-2440

Highlights

Age Groups Seen

  • Adult 19-64

Gender

Female

Hospital Affiliation

  • St. Vincent Regional Hospital

About Megan M. Petersen

About The Provider

Dr. Petersen was born and raised in Arvada, Colorado. She earned her undergraduate degree from the University of Colorado - Boulder and her Doctor of Medicine from the University of Colorado Health Sciences Center in Denver. Dr. Petersen completed an Internal Medicine Internship with the University of Utah – Salt Lake City and an Obstetrics and Gynecology Residency with Banner Good Samaritan Medical Center in Phoenix, Arizona. She completed a Gynecologic Oncology Fellowship with the University of California, Davis Medical Center. A board-certified provider, Dr. Petersen’s clinical interests include treating and preventing cervical, endometrial, ovarian, vaginal, and vulvar cancers, targeted treatments, minimally invasive surgery, complementary and alternative medicine incorporation into Western Medicine, and holistic oncology care.

“I will be with you during the hard times and celebrate the successes. You will be cared for. I am passionate about shared decision-making. Empowering you with as much information as you would like and any additional information I think you should know. I believe in Individualized patient care and listening to what my patients need.”

When not in the office, Dr. Petersen enjoys spending her time in the mountains with her family.

Video

Locations

  1. Intermountain Health West End Clinic Gynecologic Oncology
    • phone: 406-901-2440
    • fax: 406-206-6203
  2. Intermountain Health West End Clinic Gynecologic Oncology Missoula
  3. Intermountain Health Gynecologic Oncology - Sidney
  4. Intermountain Health West End Clinic Gynecologic Oncology Butte
  5. Intermountain Health West End Clinic Gynecologic Oncology Helena
  6. Cody Clinic - Gynecologic Oncology Outreach
    • 424 Yellowstone Avenue, Ste 310, Suite 310, Cody, WY 82414
    • Get Directions
    • phone: 406-901-2440
    • fax: 406-206-6203
  7. Gallatin Clinic - Gynecologic Oncology Outreach

Expertise

Education

  • Fellowship: University of California Davis, Gynecologic Oncology, 2016
  • Residency: Banner University Medical Center Phoenix, Obstetrics & Gynecology, 2013
  • Internship: University of Utah Health Program, Internal Medicine, 2009
  • Medical School: University of Colorado Health Sciences Center, 2007

Board Certifications

  • Gynecologic Oncology: American Board of Obstetrics and Gynecology, 2019
  • Obstetrics and Gynecology: American Board of Obstetrics and Gynecology, 2015

Insurance

Please contact the doctor's office directly to confirm acceptance of insurance.
Search plans
  • 6 Degrees Health
  • Aetna
  • Alignetworks
  • Allegiance Provider Direct
  • Americas Choice Provider Network
  • Banner Health System
  • BCBS
  • Cigna
  • City of Billings Employee Health Plan
  • Community Health Network
  • FedMed Network
  • First Choice Health Network
  • First Choice of the Midwest
  • First Health/Coventry
  • Fortified Provider Network
  • Humana
  • Humana Medicare Advantage
  • Interwest
  • Logistics Health Incorporated
  • Montana Health Systems
  • Mountain Health Co-op
  • Pacific Steel & Recycling
  • PacificSource
  • Preferred One
  • Sibanye Stillwater Health Partners
  • Three Rivers Provider Network
  • Tricare
  • TriWest
  • United Healthcare
  • VA Montana Health System

Ratings & Reviews

4.9 out of 5

178 ratings, 31 reviews

The Patient Satisfaction Rating is an average of all responses to the care provider related questions shown below from our survey. Patients that are treated in outpatient or hospital environments may receive different surveys, and the volume of responses will vary by question.

Search reviews
    5 out of 5 stars
    Reviewed on 2/8/2026

    She is careing, and a amazing doctor and very easy to talk too

    5 out of 5 stars
    Reviewed on 2/7/2026

    Caring about my experience and on top of treatment options

    5 out of 5 stars
    Reviewed on 1/26/2026

    Dr Peterson is an amazing Dr and I am very lucky to have her as my GynOnc! I followed her from Billings Clinic because I trust her entirely!

    5 out of 5 stars
    Reviewed on 12/21/2025

    She is a good doctor

    5 out of 5 stars
    Reviewed on 12/21/2025

    I couldn't be more pleased with the care she gave me and follow up appointment.

    5 out of 5 stars
    Reviewed on 12/20/2025

    I very much appreciate her many years of experience and her wonderful sense of humor!

    5 out of 5 stars
    Reviewed on 12/12/2025

    Great doctor. She listens!

    5 out of 5 stars
    Reviewed on 12/7/2025

    Dr. Petersen took the time to listen to every question and concern I had. She was compassionate toward my story and never made me feel embarrassed or ashamed. She communicated clearly and concisely, and I appreciated that she treated me as an individual rather than comparing me to other patients. I truly felt understood and respected.

    5 out of 5 stars
    Reviewed on 11/26/2025

    she was very professional and personable and explained the procedure in a way a nonmedical person would understand. I am so grateful for talents and skill.

    5 out of 5 stars
    Reviewed on 11/25/2025

    She is the best. I trust her.

    5 out of 5 stars
    Reviewed on 11/25/2025

    Thank you, Dr. Petersen, for your exceptional care and kindness. I truly felt supported every step of the way, and I’m so grateful for the comfort and confidence you brought to this experience.

    5 out of 5 stars
    Reviewed on 11/21/2025

    She is a very caring person who is easy to talk with. I appreciate her approach to patients which makes it comfortable to talk to her about anything. It was very impressive that she did not seem rushed or in a hurry to move onto the next appointment.

    5 out of 5 stars
    Reviewed on 11/20/2025

    Great respect and confidence in the medical doctors and staff.

    5 out of 5 stars
    Reviewed on 11/12/2025

    Dr. Petersen shared with me clearly my condition and continued care both I need to do as well as her follow up.

    5 out of 5 stars
    Reviewed on 10/31/2025

    I am looking forward to having Dr. Petersen laparoscopicly remedy the problem I am having.

    5 out of 5 stars
    Reviewed on 10/19/2025

    I appreciate my care being accelerated as much as possible. Dr Petersen listens and communicates well. She and her team want the best for me.

    5 out of 5 stars
    Reviewed on 9/29/2025

    She seems on top of it and is looking at options from further lab testing and radiologist before recommending specific treatment needed.

    5 out of 5 stars
    Reviewed on 9/24/2025

    She was absolutely fantastic! Dr. Petersen upheld her medical professionalism combined with through explanations and is truly kind, caring and compassionate. I would 100% recommend to family and friends.

    5 out of 5 stars
    Reviewed on 8/23/2025

    I liked her very much much. Her concerns were genuine.

    5 out of 5 stars
    Reviewed on 8/23/2025

    She is one of the best cancer doctor in Billings

    5 out of 5 stars
    Reviewed on 8/23/2025

    She is perfect

    5 out of 5 stars
    Reviewed on 8/19/2025

    Great Doctor. Very knowledgeable and kind.

    5 out of 5 stars
    Reviewed on 8/18/2025

    She is the best!

    5 out of 5 stars
    Reviewed on 8/1/2025

    I appreciate her positive outlook and her thoroughly explaining anything as well as not feeling rushed when asking questions. I also feel her care and coverage of essential concerns are carefully done and gives me confidence she hasn't overlooked anything

  • No RatingReviewed on 7/5/2025

    She is fun and funny, it’s not easy dealing with problems in that area but she makes it that way.

    5 out of 5 stars
    Reviewed on 7/1/2025

    I trust Dr. Petersen with my care completely. She's a bright personable doctor. You are lucky to have her!

    5 out of 5 stars
    Reviewed on 5/31/2025

    I loved her.

    5 out of 5 stars
    Reviewed on 5/29/2025

    Very thorough, kind, explained everything, listened and acknowledged my needs, surgery went very well

    5 out of 5 stars
    Reviewed on 5/22/2025

    I love the doctor, she explains very well.

    5 out of 5 stars
    Reviewed on 5/9/2025

    I could never say enough or the right words to explain how well I was treated or cared for. It was wonderful.

    5 out of 5 stars
    Reviewed on 4/29/2025

    very friendly