Lorne Cross, MD knew he wanted to spend his life helping people, and with an early fascination in the medical sciences, a career in healthcare was simply inevitable. Lorne pursued a bachelor’s degree in biology, and then completed his medical degree and residency with the hope of entering the field of medicine and making a difference in the lives of his patients. He worked for seventeen years as a board certified anesthesiologist — during which time he was published in the Canadian Journal of Anesthesiology — before transitioning into the field of Addiction Medicine.

Dr. Cross works for Acadia Healthcare, serving in two distinct roles within the specialty of addiction medicine. He is the Medical Director of Willamette Valley Treatment Center, a Medication-Assisted Treatment program that specializes in treating Opioid Use Disorder. And he is the Medical Director of a new Opioid Treatment Program in Yamhill County Jail in McMinnville, Oregon, that treats inmates struggling with Opioid Use Disorder.

Through his work in the Yamhill County Jail, Lorne Cross, MD is treating opiate addiction at one if its most vulnerable and undertreated areas: the inmate population. By offering Medication-Assisted Treatment, he and his team are helping to decrease the rate of overdose, prevent relapse, and decrease the rate of recidivism in the jail population.

Throughout his career Dr. Cross has held a number of leadership positions, including Anesthesia Department Chairman and Anesthesia Surgical Services Medical Director at Legacy Mt. Hood. Prior to his work in Addiction Medicine, Dr. Cross worked in private practice anesthesia locations in Texas, California, and Washington. He also served in the U.S. Army Reserve, and in his role as an anesthesiologist he served from 1995-2005 in Madigan Army Hospital and Darnall Army Hospital.

Lorne Cross, MD attended Southwestern Adventist College where he earned his Bachelor of Science in Biology, graduating Magna cum laude. He then went on to attend Loma Linda University School of Medicine where he earned his Medical Degree, graduating in the top third of his class. He also completed both his medicine internship and anesthesia residency at Loma Linda University Medical Center.

Past Positions

Medical Director | Willamette County Treatment Center

Since 2015, Lorne Cross, MD has been serving as the Medical Director at Willamette Valley Treatment Center, an Acadia Healthcare Addiction Medicine Clinic. Here, his primary role is the management of Medication Assisted Treatment of opioid addiction.

Medical Director | Yamhill County Prison Opioid Treatment Program

Recently, Lorne Cross, MD has begun moving his work in opioid treatment into the prison population, an area that’s extremely vulnerable to exposure and relapse. By offering Medication Assisted Treatment to help combat Opioid Use Disorder, Lorne is hoping to decrease the rate of overdose among the jail population and decrease recidivism overall.

Anesthesiologist | Oregon Anesthesiology Group

Before moving into addiction medicine, Lorne Cross, MD worked for 17 years in anesthesiology, during which time he served as a Staff Anesthesiologist with Oregon Anesthesiology Group, PD, where he also served in management roles as the Anesthesia Medical Director of Surgical Services as well as Department Chairman at Legacy Mount Hood Medical Center.


  • Medical School Class Standing – upper one-third
  • Senior Medical School Class Officer
  • Scholastic Honors Program Graduate, Southwestern Adventist College
  • John Philip Sousa Award, Southwestern Adventist College, 1988

Research & Publications

During his residency, Lorne Cross, MD conducted research with Dan Cole, MD at Loma Linda University Medical Center in the Department of Anesthesiology. Here they compared the cerebral protective effects of thiopentone, methohexital, and pentobarbital in the rat model of focal cerebral ischemia.

  • Findings published in Canadian Journal of Anesthesia, vol. 48:8, pp. 807-814

Lorne Cross, MD also worked with Eloy Schultz, MD, at Loma Linda University Medical Center in the Department of Nuclear Medicine. Here they investigated the influence that fluoride has on the density of vertebral cortex vs. the trabeculae in osteoporotic patients.

  • Findings published in Clinical Research, vol. 39, p. 100




Lorne Cross, MD knew his entire life that the healthcare was in his future. With a caring, compassionate nature and the drive to help other people, it called to him from a young age. Upon graduating high school and entering college, he chose to pursue a degree in the medical field through a degree in biology. Lorne attended Southwestern Adventist University from 1985 to 1989 where he earned his Bachelor’s Degree in Biology and the Biological Sciences. Following his undergraduate degree, Lorne decided to pursue his medical degree. He attended Loma Linda University School of Medicine where he earned his Doctor of Medicine (M.D.) in Anesthesiology in 1993.

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