As a member of St. Joseph Health Medical Group’s network of health care providers, Redwood Pain Institute proudly works alongside over 225 healthcare practitioners to provide whole-patient care and a personalized treatment plan that is compassionate and comprehensive. Our work is driven by our core value: the needs of our patients come first.

Our Story

The Redwood Pain Institute was founded in 2017 by Dr. Eric Grigsby and is a part of Neurovations, a patient care and innovation company. Neurovations provides the best care for every patient we see- every day.  Today, we are a national leader in medical device and pharmaceutical innovation, clinical research, pain, and neuroscience education, and community health through our non-profit Foundation, HealthRoots. Our unwavering mission is to inspire hope and to contribute to health and well-being of our patients and communities through integrated clinical practice, research, and education.

Eric Grigsby, MD, MBA

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 Redwood 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 25 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.

Avinash Ramchandani, MD, MBA

Avinash Ramchandani, MD, MBA

Dr. Avinash Ramchandani is a native Californian who is board certified in physical medicine and rehabilitation and pain management. He received his B.A. Molecular in Cell Biology from UC Berkeley. After he completed his undergraduate degree, he attained his M.S. in 2001 and M.D. in 2005 from the Rosalind Franklin University, the Chicago Medical School. He did his internship at St. Mary’s Medical Center in San Francisco, California, and residency in Physical Medicine and Rehabilitation from Stanford University in Palo Alto, CA. After residency, he completed his fellowship in Pain Medicine at the Oregon Health and Science University in Portland, Oregon. Dr. Ramchandani completed dual Master degrees in Business Administration from the Johnson Business School at Cornell University and Queens University in Kingston, Ontario, Canada.

Dr. Ramchandani incorporates pain procedures, nutrition, exercises, and medications to customize treatment options for patients in pain. He enjoys being on the cutting edge of proven treatments for pain management and believes in optimizing the functional being so that pain is controlled and people may live with the highest degree of dignity.

Dr. Ramchandani is married and has two young children who he enjoys spending time with. He is an avid baseball and football fan and loves the San Francisco Giants and 49ers. He has an interest in writing and is published in several journals and national and international periodicals. He also enjoys running, golf, swimming and exercising.

Bashar K. Ahmed, MD, D.ABA

Bashar K. Ahmed, MD, D.ABA

Dr. Bashar K Ahmed joins the team at Redwood Pain Institute as a double board-certified Anesthesiologist and an Interventional Pain Management specialist from Glendale, Arizona.

Dr. Ahmed completed his Pain Medicine Fellowship ​at the University of California Davis Medical Center and his Anesthesiology Residency ​at Banner University Medical Center. He completed his Internal Medicine Internship ​at the University of Arizona Medical Center and the University of Arizona College of Medicine hospitals.

He initially received his Bachelor of Science (B.S.) ​in Biology with Honors,​ ​Summa Cum Laude Barrett Honors College, and College of Liberal Arts and Sciences at Arizona State University.

As your treatment at the Redwood 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.

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