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Kristina Harrington, MD

Dr. Harrington is the Medical Director of Omega Health Services in Boise, ID. She started Omega in 1998. She received her medical education at Loma Linda University in California (1991) and completed her psychiatry residency and fellowship at the University of Southern California, Los Angeles (1996). Dr. Harrington is Board Certified in Adult Psychiatry and Addiction Medicine.

In 2009, Dr. Harrington co-founded MidValley Healthcare in Meridian, ID. MidValley specializes in Addiction Recovery and Behavioral Health treatment utilizing Transcranial Magnetic Stimulation (TMS) therapy. Visit Midvalley Healthcare.

Dr. Harrington provides outpatient services and medication management at both locations, as well as inpatient services at Intermountain Hospital and Lifeways, Boise.

Jeffrey L. Johnson, Pharm-D, PA-C

Jeffery Johnson, PA-C, Pharm-D graduated with a Doctorate in Pharmacy from Idaho State University in 2000 and worked as a community pharmacist for two years before becoming a Physician Assistant. Jeff earned his Physician Assistant degree from Idaho State University in 2002. He practiced Emergency Medicine in a busy Emergency Department in Pocatello, ID for several years. In 2011 he became a Clinical Assistant Professor at ISU, teaching in the Physician Assistant Program.

Jeff started at Omega Health Services in 2011, focusing his practice on mental health and working in our Walk-in Clinic. His experience in the Emergency Department aided his success in our Walk-in Clinic and daily scheduled clinic. Jeff enjoys spending time with his wife and family, as well as his yearly trips to the Dominican Republic for Medical Mission work.

Jeff accepts clients of all ages and takes most insurance plans, including Medicare and Medicaid, private insurance, and self-pay patients. If you are interested in scheduling an appointment with Jeff, please contact our office at (208) 853-0071 to schedule an appointment.

Rachel Jessen, MSW, LCSW

Rachel Jessen, MSW, LCSW obtained her Bachelor in Social Work from Brigham Young University (1991) and her Master in Social Work from New Mexico State University (1996). Rachel has been a social worker for nearly 30 years, and has been practicing in a clinical setting for nearly 20. Her practice settings have included community mental health, family preservation services, and addiction treatment.

Rachel has been with Omega Health Services since 2002. She provides individual psychotherapy services, as well as group therapy services at Omega to adults and adolescents. Rachel specializes in treating mood and anxiety disorders, as well as addiction issues. She uses primarily Cognitive Behavioral Therapy (CBT), brief and solution-focused therapy, and acceptance and commitment therapy. Rachel also practices at MidValley Healthcare, where she offers group therapy.

Rachel loves spending time with her husband, children, and dogs. She also enjoys studying comparative religion, history, and psychology; and perfecting favorite recipes.

Rachel sees patients ranging in ages from 15 years old and older. Rachel takes most EAP plans, as well as Medicare, private insurances, and self-pay patients. If you are interested in scheduling a therapy appointment with Rachel, please contact our office at (208) 853-0071.

Janet Strong, FNP-C

Janet Strong, FNP-C received her Bachelor in Nursing degree from Emory University in Atlanta, GA (1982). She worked for many years as a nurse in a wide variety of hospitals, clinics, and oversees areas. Janet earned her Master of Science degree from Idaho State University (2005), becoming a Nurse Practitioner, after which she decided to pursue psychiatry as her specialty.

Janet began working at Omega Health Services in 2005, providing psychiatric evaluations and medication management. She specializes in diagnosis and management of all areas of mental illness. She offers a supportive, knowledgeable style of care to all ages of clients. Janet spends her personal time gardening, reading, and spending time with her grandson. She is also a Chaplin, and travels with an organization that offer crisis relief all over the world.

If you are interested in making an appointment with Janet, please call our office at (208) 853-0071.

Cali Bradberry, MMS, PA-C

Cali Bradberry, PA-C, MMS received her Bachelor of Science in Psychology from the University of Idaho (2007) and worked in the field of mental health for several years before going to graduate school. She obtained her Master of Medical Science degree and her Physician Assistant Degree from Red Rocks Physician Assistant program in Denver, CO (2011). After finishing graduate school, she moved back to Boise and began practicing at Omega Health Services.

Since 2011 Cali has specialized in diagnosis and management of a variety of mental health disorders at Omega. She offers psychiatric evaluations and medication management on a daily basis through Omega. Cali is passionate about the outdoors and loves to cook and travel. She is married and has two dogs she spends her downtime with.

If you are interested in scheduling with Cali, please contact our office at (208) 853-0071.

Chris Chandler, MPAS, PA-C

Chris is a native of Upstate New York and a retired Army officer. He is a graduate of one the country’s premier physician assistant training programs at the University of Utah. He is married and has two daughters. He has previous clinical experience in internal medicine, urgent care, family medicine, and sleep medicine. He has additional clinical interests in PTSD, and Veterans health. His interests outside of work include skiing, mountaineering, motorcycling, history, international affairs, playing guitar, and supporting his beloved Syracuse University Orange and all professional teams from Boston.

He and his family are very happy to call Boise their home, and he is excited to be a part of Omega Health Services.

Angela Grant, DNP, FNP-C

Angela Grant, DNP, FNP-C is a native of Idaho and has been in the Treasure Valley for the past 20 years. She is a nurse practitioner and obtained her Doctor of Nursing Practice from Idaho State University and her Bachelor of Science in Nursing from Boise State University. Her background is family practice and has a passion for caring for the mental health needs of patients of all ages. She is excited to be a part of the Omega team. While not at work she enjoys spending time with her family and two dogs.

Angela is currently accepting new patients and if you would like to make an appointment please contact our office at (208) 853-0071.

Stuart Coldsnow, PA-C

Stuart Coldsnow, PA-C

Stuart is a medication management provider who started with Omega in 2020. Before attending graduate school, he gained extensive experience in both the inpatient and outpatient behavioral health setting. He received his Master of Science in Physician Assistant Studies degree from Sullivan University with the goal in mind to practice psychiatry. At Omega, Stu specializes in diagnosing and managing all areas of mental illness for all age groups. He takes pride in providing care with the utmost compassion and empathy for anyone that presents to him.

Stu is originally from Lawrence, Kansas (Rock Chalk Jayhawk) but is now proud to call Boise home. He spends his free time exercising, spending time with family, and teaching himself how to play the piano.

Stu accepts most insurance plans including Medicare and Medicaid, private insurance, and self-pay patients. If you are interested in scheduling an appointment, please contact our office at (208) 853-0071.

Zana Delic, PA-C

Zana Delic, PA-C

Zana obtained her Masters Degree as a PA-C from Barry University in Florida. For about 2 years she worked for a Family Practice/Urgent Care. She found she really enjoyed helping patients with mental health and behavioral health issues, so she decided to specialize in Psychiatry.

She speaks English and Bosnian (Serbo-Croatian). She enjoys spending time with her husband, two daughters, and two dogs. She enjoys walking, reading, and dancing.

Zana provides psychiatric evaluations and medication management for children and adults. Zana accepts most insurances, including Medicare and Medicaid, private insurance, and self-pay patients. If you are interested in scheduling an appointment, please contact our office at (208) 853-0071.

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Omega Health Services has been serving the Treasure Valley community with quality mental healthcare since 1997. It has been our endeavor to bring to you the best psychiatric services available at affordable costs during hours that accommodate your schedule.

Boise Mental Health


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Our mental health professionals can provide care to individuals experiencing virtually any mental health condition. If you or a loved one is dealing with life altering mental health symptoms we have treatments that can help. Contact our office for an appointment.