The Napa Pain Institute was founded in 1992 by Dr. Eric Grigsby, a national leader in the field of Pain Management who has devoted his life to advancing techniques and treatment methods to alleviate chronic pain. At the Napa Pain Institute, our providers seek a thorough understanding of the origin of patients’ pain issues and offer the latest techniques for the treatment of chronic pain. Through integrated clinical practice, research, and education, our caring, committed team are your partners in whole-patient health care, offering world-class treatment and support for those suffering from a range of debilitating chronic illnesses that result in ongoing pain.
At the Napa Pain Institute, our mission is to inspire hope and contribute to the health and well-being of our community here in the Bay Area by bringing more than two decades of experience in whole-patient care to the management of chronic pain. Our work is driven by our core value: the needs of our patients come first.
Eric Grigsby, MD, MBA
Dr. Eric Grigsby enjoys a national reputation for excellence in the field of Pain Management. He has a background as a researcher, teacher and clinician, and brings over 25 years of clinical experience to the Napa Pain Institute. Dr. Grigsby attended elementary and secondary school in his hometown of Knoxville, Tennessee, and received a Bachelors Degree in Biology and Economics from Brown University in Providence, Rhode Island. He formed an interest in Pain Management as a career while working at Boston Children’s Hospital in the Department of Orthopedic Surgery.
After graduating from Boston University Medical School in 1984, Dr. Grigsby trained in General Surgery, Anesthesiology, and Pain Management at the Mayo Clinic in Rochester, Minnesota. He was then invited to join the Medical Staff and teach at the Mayo Medical School until moving to California in 1989. The Dean of the University of California at Davis Medical Center then invited Dr. Grigsby to establish their first Pain Management Center, where he served as Medical Director until 1992. Following his post at UC Davis, Dr. Grigsby established his private Pain Management practice in Napa, California.
Today, he and his staff of over 50 professionals consult with patients from throughout Northern California and the western United States, and now Kauai and the Hawaiian Islands. More recently, Dr Grigsby completed his Masters in Business Administration from Duke University’s Fuqua School of Business. He speaks nationally on topics such as non-operative treatment of spinal disorders, the safe use of medications for treatment of pain, and the legal and regulatory issues relating to proper treatment of patients with chronic illness.
Dr. Melanie D. Johansson, MD, FACEP
Dr. Johansson will be joining the Napa Pain Institute team March 2023.
Dr. Johansson comes to us as a fellowship-trained and board-certified pain management specialist with well over a decade of experience. She completed her fellowship training at Walter Reed National Military Medical Center in Bethesda, MD where she then became the associate program director of the pain medicine fellowship and an assistant professor of military and emergency medicine. She graduated from the Virginia Commonwealth University School of Medicine in Richmond, Virginia, was Pre-medicine at San Diego State University, and received her BSN from Marquette University in Milwaukee, Wisconsin.
Her breadth of experience comes from a full career of serving in the United States Navy where she was the recipient of multiple academic and military service awards including a Meritorious Service Medal, three Navy Commendation Medals, and numerous other individual, unit, and campaign awards. She has multiple published works and is the founding member of a military Pain Medicine Special Interest Group with the America Society of Regional Anesthesia.
In her free time, Dr. Johansson enjoys traveling, is newly married, loves dogs, and enjoys cooking and baking, as well as other creative pursuits. She has a particular interest in advanced procedural techniques for chronic pain relief and the effects of lifestyle on pain and healing. She looks forward to continuing our mission of providing our patients with the best care, every day.
Gordon Iwasaki, PA
Gordon Iwasaki is a physician assistant with over twenty years of experience. He began his career in orthopaedics and industrial medicine. He has been working in pain management over the past seven years.
Mr. Iwasaki was raised in South San Jose and attended UC San Diego for his undergraduate degree. Later, he attended Charles Drew University in Los Angeles for his physician assistant studies and obtained his master’s from University of Nebraska. He has been residing throughout Southern California in Los Angeles, Riverside, and San Diego counties. He returns to Northern California to be closer to his family.
He remains a diehard 49ers and SF Giants fan and enjoys exercising and spending time with his canine companions and listening to music.
Andrew T. Wilson, PA-C
Andrew joins the Napa Pain Institute team as a Physician’s Assistant.
He recently graduated from the University of California at Davis and spent time studying orthopedic surgery at UC Davis Medical Center, plastic surgery, and inpatient cardiology.
Prior to this, Andrew was an EMT in San Leandro and has lived in Australia.
As your treatment at the Napa Pain Institute continues, we may ask you to provide us with more information, or share information with you — find more forms and information on the Patient Resources page.