Dr. Randy Grellner has been practicing family medicine in Cushing since 2000. He is a graduate of Oklahoma State University where he received his Doctor of Osteopathic Medicine. He is Board Certified in Family Medicine and in addition to his full time practice, he sees patient part-time at Pipeline Urgent Care Clinic.

Dr. Grellner and his wife Shelley have been married 25 years and have 2 teenage boys. He stays active in Future Farmers of America, ranching, and enjoying activities with his 2 sons.