Dr. Thomas Olson

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 12 conditions, according to our data. Her top areas of expertise are Cervical Cancer, Ovarian Carcinosarcoma, Sertoli-Leydig Cell Tumor, Colonoscopy, and Bladder Reconstruction.

Chad Abbey is an Obstetrics and Gynecologist in Billings, Montana. Dr. Abbey is highly rated in 6 conditions, according to our data. His top areas of expertise are Premature Infant, Gestational Diabetes, Menorrhagia, Painful Menstrual Periods, and Intrauterine Device Insertion. Dr. Abbey is currently accepting new patients.

Giovanni Sisti is a Neonatologist and an Obstetrics and Gynecologist in Billings, Montana. Dr. Sisti has been practicing medicine for over 18 years is highly rated in 4 conditions, according to our data. His top areas of expertise are HELLP Syndrome, Ectopic Pregnancy, Preeclampsia, Vulvectomy, and Lymphadenectomy.