Meet Our Team
Dr. Joseph P Stapleton is an Interventional Pain Specialist who is board certified by the American Board of Pain Medicine in Pain Medicine and by the American Board of Anesthesiology in Anesthesia. He has practiced medicine in Portland for over 28 years and is a member of the Spinal Intervention Society, North America Neuromodulation Society and American Society of Interventional Pain Practitioners.
David J. Klarberg, FNP is a nurse practitioner with experience in chronic pain management, infectious disease, and primary care. Originally hailing from Houston, Texas, he has been board certified by the American Nurses Credentialing Center since 2012.
Danilyn Allen, FNP is a nurse practitioner with a wide range of experience and a passion for helping patients in pain. She has a Master of Science degree in Nursing and is board certified by the American Academy of Nurse Practitioners.
Barb Troxel, ANP-BC is a nurse practitioner who has specialized in pain management for many years. She graduated from the University of Portland with a master’s degree in nursing and minor in business administration. Barb is nationally certified as an adult nurse practitioner and is a member of the American Nurses’ Association and Nurse Practitioners of Oregon.