Physicians and Providers


montagueMichael Montague, PA-C, MPAS – Chief Medical Officer

Michael Montague serves as the Chief Medical Officer at Morton Comprehensive Health Services. In his role, he provides leadership and oversite for all medical and related clinical services in for Morton’s locations across northeast Oklahoma.

Montague has served as a full scope family practice and primary care provider and in a number of leadership positions on the organization’s executive team for over 14 years.

He has consistently worked to assure primary cares services for those most in need and to help eliminate health disparities in Oklahoma communities.

Montague is a licensed Physician Assistant, and previously served in the U.S. Navy as an Independent Duty Hospital Corpsman, working in both clinical and military settings. He has a bachelor’s degree of Science-Physician Assistant from the College of Health Sciences in Roanoke, VA, and a master’s degree of Physician Assistant Studies from the University of Nebraska.

Montague is also an active member of the American Academy of Physician Assistants and the Oklahoma Academy of Physician Assistants.

Mehnert-KaySusan Mehnert-Kay, M.D. – Chief of Family Medicine and Teaching Health Center Director

Dr. Susan Mehnert–Kay oversees all family medicine services at Morton Comprehensive Health Services. In her position, she directs the Community Health Center’s Teaching Health Center (THC) for family practice residents in coordination with the University of Oklahoma School of Community Medicine in Tulsa. Morton’s receipt of the award from the THC Health Resources and Services Administration of the U.S. Department of Health and Human Services is one of the first in the region.

She graduated from Oklahoma State University with a bachelor’s degree in Biomedical Science and received a medical doctorage degree from the University of Oklahoma. She completed a three-year residency in Family Medicine at the University of Oklahoma in Tulsa, serving as chief resident.

During the first 21 years of her career, Dr. Mehnert-Kay served as a professor at OU’s Family Medicine residency program, as she saw patients in a private practice in the now University of Oklahoma’s School of Community Medicine in Tulsa.

Dr. Mehnert-Kay is Board-certified in Family Medicine, a member of American Academy of Family Physicians, American Medical Association, Oklahoma Academy of Family Physicians and Tulsa County Medical Society. Additionally, she has served as the volunteer medical director of the SANE program in Tulsa for over 20 years.

Harris-BeattyCalysta Harris-Beatty, DDS – Dental Director

Dr. Calysta Beatty is director of the Dental Department. She supervises and directs the dental operations and its personnel at Morton Comprehensive Health Services.

Before joining Morton, Dr. Beatty served as dental chair of operations at Crusader Community College Health in Rockford, Ill, and dental director at Southern Dominion Health System in Victoria, Va.

She is licensed to practice in Illinois, Oklahoma and Virginia. Dr. Beatty is a member of the American Dental Association and a graduate of ADA’s Institute of Diversity in Leadership, and is a member of the National Network for Oral Health Access and the National Oral Health Council.

CoppChris Copp, O.D. – Optometry Director

Dr. Copp is the director of optometry. He directs the operations of the department and the services ranging from eye exams to comprehensive diabetic and hypertensive dilated exams to onsite optical frame selections among other services.

Prior to joining Morton, he was a clinical professor at the Cherokee Nation Rural Health Clinic, an optometrist at Loving Eye Care and TLC Laser Eye Center.

He is a honor graduate for the Advanced Individual Training in Fort Sill, Okla., and was a Battalion Soldier of the Month and Soldier of the Quarter, and was the Top Colt in 2001 with the highest individual score on the written exam.

Dr. Copp is a graduate Northeastern State University receiving his doctor of optometry and undergraduate degree in business administration. He also has an associate degree in liberal arts from Tulsa Community College.

Additional Morton Physicians and Providers:

Laurie Hamilton, D.O./OBGYN

Abel Lau, M.D.

Stephen Martin, D.O.

Sharonda Morton, D.O.

Richard Raines, M.D.

Mina Rizwan, M.D.

Tatenta Goronga, M.D. Resident

Ezekiel Onigbinde, M.D. Resident

Young Trieu, M.D. Resident

Tamara Woleston, M.D. Resident


David Scheuerman, DDS

Thomas Williams, DDS


Libby Cooper, PA

Tim Greenwood, LCSW

Emily Hill, LPC

Lisa Keller, RD, LD, RDN

Teresa Passmore, APRN

Mindi Price, MS, APRN

Emily Spencer, NP

Anita Williams, CNP