Dr. David F. Christianson

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. Dr. Petersen is highly rated in 17 conditions, according to our data. Her top areas of expertise are Neuroendocrine Carcinoma of the Cervix, Cervical Cancer, Ovarian Carcinosarcoma, Colonoscopy, and Bladder Reconstruction.

Dr. Connor completed an undergraduate degree in Biochemistry at the University of Virginia and later earned her Medical Doctorate at the University of Virginia School of Medicine. She then completed her Obstetrics & Gynecology Residency training at Brown University and Gynecologic Oncology fellowship training at the Cleveland Clinic. She is board-certified in both obstetrics and gynecology and gynecologic oncology. Her clinical interests include preventing, diagnosing, and treating ovarian, uterine, cervical, vaginal and vulvar cancers. Dr. Connor moved to Montana to ensure comprehensive access to gynecologic oncology services in the region.�I care deeply for my patients and work hard for them to have the highest level of care and autonomy in their care.�When not seeing patients, Dr. Connor spends her time with her husband, two children, and two family dogs. They spend most of their time outside, whether skiing, hiking, or catching a soccer game. Dr. Connor is highly rated in 14 conditions, according to our data. Her top areas of expertise are Ovarian Carcinosarcoma, Sertoli-Leydig Cell Tumor, Endometrial Cancer, Bladder Reconstruction, and Hysterectomy.

Sajeve Thomas is a Hematologist and an Oncologist in Billings, Montana. Dr. Thomas is highly rated in 36 conditions, according to our data. His top areas of expertise are Melanoma, Neuroendocrine Tumor, Fibrosarcoma, and Undifferentiated Pleomorphic Sarcoma.