About Us

Medical Director

Arnold Petersen, MD

Dr. Petersen earned his medical degree with A.O.A. Honors at Loma Linda University in 1966. He completed a rotation internship at Portland Adventist Hospital and Medical Center, then a mission term at Davis Memorial Hospital in Guyana, South America. He then completed his OB/GYN residency at White Memorial Hospital and Medical Center. He was board-certified in OB/GYN by the American Board of Obstetrics and Gynecology in 1974.

He has earned special certificates as a preceptor in Pelvic Endoscopic Surgery, CO2 Laser, Advanced Endoscopic and Open Abdominal KTP/YAG Laser, and Operative Hysteroscopy. Dr. Petersen is a course director and instructor in Neonatal Resuscitation and Advanced Life Support in Obstetrics. He has served as the chairman of OB/GYN at Portland Adventist Medical Center and chairman of its Laser (surgery) Committee. He was also a member of the Physicians Advisory Council and is a current member of the OB Task Force on Medical Malpractice for NPMIC.

He is committed to continuing his medical education and stays current with the latest developments in his field.

Program Director

Stacey Perry

Dr. Petersen’s patients who wish to participate in Dr. Simeon’s hCG program for weight loss will be guided through the hCG program by Stacey Perry. Stacey was trained at the International Symposium of hCG Treatment of Obesity and Associated Morbidities in October 2008. She has completed the hCG program herself and has independently and successfully counseled hundreds of patients in their weight loss endeavors over the last 8 years.

Stacey has been trained and has experienced Viora’s exciting results and will consult with each patient before they start their treatments here at our clinic.

Stacey Perry has a Bachelor of Science Degree in psychology from the University of Oregon. Her counseling background includes an internship at a grief counseling center and working for two years in a counseling office. Stacey also worked for three years as a nursing home administrator, where she gained more experience in management and business administration. Her training and success with Dr. Simeon’s hCG program for weight loss personally and as a counselor have been invaluable assets to Dr. Petersen’s patients.

Viora Technician

Rosa Anderson

Rosa has been a Medical Assistant for 36 years. She has worked in ENT, Urgent Care and the past 29 years has worked in OB/GYN. She has advanced training in all of the Viora Reaction treatments to tighten, smooth and slim the skin with precision.

Rosa is bilingual in English and Spanish and has used her ability to translate throughout her medical career. She lives with her husband and son and love quilting comfort quilts for cancer patients, cake decorating for kids and learning to play guitar in her spare time.

Medical Assistant

Liz Cook

Liz is an AAMA certified Medical Assistant who has been working at our clinic for 4 years and loves what she does. She is an invaluable part of our team.