Our Providers

Oleg Maksimov, MD

Oleg Maksimov

Dr. Maksimov is President of Columbia Pain and Spine Institute. His primary focus is to provide high quality diagnosis and treatment of painful spinal conditions, pain relief and functional restoration. Dr. Maksimov is a board certified physician by the American Board of Physical Medicine and Rehabilitation. He completed his physiatry residency at the University of Rochester, Rochester, NY. He continued sub-specialty studies at the prestigious University of Pennsylvania Interventional Spine fellowship. Dr. Maksimov practices evidence based algorithms using physical modalities, medications and minimally invasive spine procedures for diagnosing and treating back and neck pain disorders.

Howard Grattan, MD

Howard Grattan

Dr. Grattan is a fellowship trained and double board certified pain management and physical medicine and rehabilitation physician. His training was completed at Loma Linda University known for a focus on whole person care. He uses this training to address the multiple facets of the patients’ lives that are contributing to their suffering. Dr. Grattan uses multiple diagnostic and treatment modalities to accomplish functional improvements above and beyond pain control, including NCS/EMG, fluoroscopically guided injections and radiofrequency ablation to name a few. He is comfortable treating all painful conditions and works to minimize opioid pain medications.

Jordan Garman, DO

Jordan Garman

Dr. Garman is board eligible in pain medicine and physical medicine and rehabilitation. He uses his training and considerable experience to treat patients in a compassionate and evidence based manner.  Dr. Garman uses multiple modalities including medication, physical rehab, and minimally invasive injections for diagnosis and treatment of pain disorders.

His aim is to attain maximum functional improvement in every patient.

Susan Ring, PA-C

Susan Ring

Susan Ring is a Physician Assistant. She is certified by the National Commission on Certification of Physician Assistants (NCCPA), and a member of the American Academy of Physician Assistants, Oregon Medical Association and Oregon Society of Physician Assistants. She graduated from Loma Linda University with a master’s of science degree in Physician Assistant Studies. She works synergistically with our doctors to provide multimodal, whole patient care in treating chronic pain conditions. She has previously worked in medical research, education, family medicine and chronic pain management.

Laarnie Chaco, PA-C

Laarnie Chaco

Laarnie Chaco, PA-C, is a Physician Assistant at Columbia Pain and Spine Institute. She is certified by the National Commission on Certification of Physician Assistants (NCCPA) and a member of Oregon Medical Association (OMA). She graduated from Stanford School of Medicine Primary Care Associate Program and obtained her Master's Degree in Medical Science from St. Francis University. She has several years of providing care to patients in a variety of fields including Oncology, Urgent Care and Family Practice.