• Grey Facebook Icon
  • Grey Twitter Icon
  • Grey Instagram Icon

© 2016 by Pipeline Crossroads Clinic



Suffering from an illness or injury?

We can help offer relief for the flu, sprains, cuts, and many of life's common mishaps.


Sometimes you might need us for work checkups or screenings or maybe you’re suffering through a case of bronchitis. Whatever your urgent care need, we’re making it easier for you to find and receive care efficiently. Sprains, pulled muscles, sinus infections, burns, and other urgent care needs are inconvenient by nature. They don’t take into account what day it is weather it is weekends, birthdays, or holidays, and they don’t try to work around your busy schedule either. At Pipeline Crossroads Clinic you can get the same-day treatment you need. With our on-site digital X-rays, labs and other diagnostic capabilities at our clinic, we’ll have you in, diagnosed, treated, and back home before you know it.

For businesses, we also offer quick and easy occupational health services and physicals to help get employees back to work in a timely manner and maximize productivity.

Whether you need urgent care, X-rays, wellness checks, lab tests, or occupational health services, Pipeline Crossroads Clinic is your spot to take the hassle out of healthcare.




Randy Grellner D.O
Courtney Elliot APRN-CNP

     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.

     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.

     Dr. Grellner is board certified in family medicine.  He works at Cushing Medical Specialists full time, and sees patients part time at Pipeline CrossRoads Clinic.

Tom Hamilton D.O
Ear, Nose &Throat
Click photo for more information

    Courtney Elliot is a board certified Family Nurse Practitioner. She has been practicing with Dr. Grellner in Cushing since 2003. She graduated with her Bachelors of Science in Nursing from the University of Oklahoma Health Science Center.   Courtney then earned her Master’s of Science in Nursing as a FNP from Vanderbilt University in Nashville, TN.  Courtney works 4 days a week at Cushing Medical Specialists.  In addition,  she sees patients part-time at Pipeline CrossRoads Clinic.

     Courtney and her husband Chris have been married 15 years and have an 8 year old daughter and a 5 year old son. She loves spending time with her family, staying in shape with the Cushing Boot Camp group, and teaching the first grade Sunday school class at her church.

John Stewart,M.S.,FAAA
Click photo for more information
Sarah Laird APRN-CNP

     Sarah Laird is a certified Family Nurse Practitioner at Pipeline Crossroads Clinic. She graduated from the University of Northern Colorado with a Bachelor of Science in Exercise Physiology in 2007. She then obtained her Bachelor of Science in Nursing in 2010 from Oklahoma City University, and her Master of Science, Family Nurse Practitioner, from University of Nebraska Medicine (Clarkson College) in 2016. Sarah’s background in nursing includes oncology at St. Anthony’s Hospital in Oklahoma City, and emergency medicine at Stillwater Medical Center.

     Sarah and her husband Cody live on their farm and ranch in Morrison, OK. They have three children. Her hobbies include being outdoors, spending time with family, fishing, sports, and anything having to do with OSU athletics.  

Deven Elliott APRN-CNP

    Deven Elliott is a certified Family Nurse Practitioner and Pipeline CrossRoads Clinic full-time provider.  Deven has been a registered nurse since 2004 and graduated from the University of Oklahoma Health Science Center in 2014 with her Master’s of Science Degree in Nursing-Family Nurse Practitioner.  Past experience includes working in Stillwater Medical Center Emergency Department for 10 years along with almost 3 years of flight nursing experience with EagleMed. LLC. 

     Deven and her husband Adam have been married for 10 years and have a 7 year old daughter and a 6 year old son.  She loves spending time with her family and caring for the many animals that reside on their farm.



"My son is always comfortable here and he usually HATES seeing a doctor. Great people, super convenient and I feel like they really care about the people they see."
-Liz Hoover

"We love this clinic. The doctors are amazing and they are very quick and they spend time with you explaining what is going on with your illness."

-April Allen

"After working all day, I picked up my son to find he wasn't feeling well and had a fever. We went straight to the clinic and it happened to be 15 minutes before they closed. Super sweet staff got us in and out with a quick diagnosis. Even called the next day to confirm diagnosis. Highly recommend this clinic!"
 -Jacklyn Kennedy

"My family has used this clinic numerous times! So convenient to get into when our PCP has no openings! Everyone I have dealt with thus far has been very pleasant and helpful. The times we've been seen for something that will take days to get over, they will call to see how we are doing, if we're getting better or worse... Then proceed to tell us to not hesitate to call if we should happen to get worse. Love it!"

-Stacy Petitt-Blansett

"I went there feeling horrible, they called and checked on me the next day! Have been there with my children. Staff is very friendly. Dr. Grellner is my normal doctor and I like knowing if I can't get in to see him I can go to the clinic and get right in."
 -Shelley Potter

Love this service to our community! Quick and accurate service every time I've been! Thank you for serving our community!!!

- Jerrica Kahle


Our Hours

Monday – Friday  8:00AM – 6:00PM

Saturday    09:00AM – 4:00PM



1002 East Cherry St.

Cushing, OK 74023

Phone: 918-306-4515

Fax: 918-306-4519

Our Address