Mason Clinic - Primary Care - Olympic Physicians

Within Mason Clinic's Primary Care services we provide quality, cost-effective primary health care to the residents of our community on behalf of the District, now known as Mason Health. These health care services shall be provided with specific attention to the personal, physical, emotional and spiritual needs of the patients and their families.

Mason Clinic - Primary Care (Olympic Physicians)

  • Mon-Fri: 7:30 am to 5 pm

About Mason Clinic - Primary Care (Olympic Physicians)

Mason Clinic - Olympic Physicians has been recognized for our involvement and leadership in Quality Improvement. We have partnered with the Washington State Department of Health and Qualis Health to develop and maintain a program that helps our diabetic patients improve the lives they lead. This program includes a computer registry that allows us to follow up with our patients and give feedback to our providers about the care they are giving compared to their piers. Olympic Physicians was chosen by our partners because of our success and was published in the attached article on Quality Improvement.

Arriving on time for your scheduled appointment is important in addressing your healthcare needs. Please notify Mason Health as soon as you know you will need to change or cancel your appointment. You are required to cancel your appointment at least one business day prior to your scheduled appointment because of high patient demands. Your ability to schedule future appointments will change because of missed appointments or cancellations.

If you have questions about our No-Show and Cancellation policy, please call the clinic or download a copy of the No-Show and Cancellation Policy as indicated below.

Clinic Providers

KC Graham, PA-C
Primary Care

KC Graham, PA-C, is a certified physician assistant who obtained his Master’s degree in Physician Assistant Studies (M.P.A.S.) from Idaho State University in 2014.

Katie Hackney, PA-C
Primary Care

Katie received her Master of Medical Science degree from Barry University Physician Assistant Program in 2003. She enjoyed practicing medicine in Shelton before taking time off to start a family and is excited to return to patient care.

Rebecca K. Hendryx, M.D.
Primary Care

Dr. Hendryx enjoys working with individuals and families to promote optimal health and well being throughout all stages of life.

Erin Martinache, LICSW
Behavioral Health

Erin K. Martinache joined Mason Health in November of 2015. Prior to that, she worked as a Mental Health Therapist, offering individual and group therapy to adults at a local community mental health clinic, since June of 2006.

Jennifer A Nelson, ARNP
Primary Care

Jennifer Nelson, A.R.N.P., is a board-certified family nurse practitioner licensed by the state of Washington, and also board-certified with the American Association of Nurse Practitioners (AANP).

Mark L. Schlauderaff, M.D.
Internal Medicine

Dr. Schlauderaff has a special interest in diabetes and teaches classes through the diabetes education program at Mason General Hospital. He has been honored as Washington State Rural Physician of the Year.

Jimmy Wesson, M.D.
Internal Medicine

Jimmy Ray Wesson, Jr., M.D., joined the medical staff at MGH Olympic Physicians as an internist in August 2017. He received his medical degree from Cebu Doctors’ University, College of Medicine, in 2008 and completed his internship and residency in internal medicine at Columbia University/Harlem Hospital Center in 2017.