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Markham Nightengale, M.D.
Gastroenterologist
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To schedule an appointment, please call 918-438-7050 or click the “Message Us” button located at the bottom right corner of your screen and a member of our team will contact you within 48 hours.
Mark Nightengale MD was born in Stillwater, Oklahoma when his father was attending veterinary school. He was raised in Ardmore, Oklahoma and went to college at Oklahoma State University where he completed his degree in Biochemistry. He then attended medical school at University of Oklahoma Health Science Center. He completed his internship and residency in Internal Medicine at Mayo Graduate School of Medicine in Rochester, Minnesota. He then completed his fellowship in Gastroenterology at Baylor University Medical Center in Dallas, Texas.
Dr. Nightengale has practiced gastroenterology with Adult Gastroenterology Associates since the completion of his training and has an interest in all areas of gastroenterology. He is married, has three children and his interests involve reading and many outdoor activities including distance hiking.
Education
- Bachelor of Science in Biochemistry: Oklahoma State University – Stillwater, OK
- Doctor of Medicine: University of Oklahoma Health Science Center – Oklahoma City, OK
- Internship and Residency in Internal Medicine: Mayo Graduate School of Medicine – Rochester, MN
- Fellowship in Gastroenterology: Baylor University Medical Center – Dallas, TX
Awards and Accreditation
- Distinguished Service Award while at Oklahoma State University
- Phi Kappa Honor Society (top 10% of his class) at Oklahoma State University
- Alpha Omega Alpha award from the University of Oklahoma Health Science Center
- American Gastroenterological Association
- American College of Physicians
- American Medical Association
- Oklahoma State Medical Society
- Arkansas-Oklahoma Endoscopic Society
- Tulsa County Medical Society
Locations
Tulsa Endoscopy Center
4200 East Skelly Drive
Ste. 100
Tulsa, OK 74135
Ste. 100
Tulsa, OK 74135
Phone: 918.728.6010
Tulsa
4200 E. Skelly Drive
Ste. 700
Tulsa, OK 74135
Ste. 700
Tulsa, OK 74135
Phone: 918-438-7050
Reviews
This is a great place with everybody. So friendly and courteous
I'm glad I came to this area and was directed to this facility.
I'm glad I came to this area and was directed to this facility.
They are the most efficient friendliest group of people and my doctor is amazing. The girl that greets you when you first come in is always very friendly
Dr Nightingale is very nurturing and kind.
Dr Nightingale staff was very helpful! Dr Nightingale gave me the details and was scheduled for March.
I truly appreciate Dr. Nightengale's amazing bedside manner. My favorite physicians are those that actually take some time to hear you and then explain things well. That's exactly what he did.
Excellent service and well treated thank you all!!
Dr Nightengale is a caring, knowledgeable and dedicated gastroenterologist. I highly recommend him.
My visit was perfect. Dr Nightingale was wonderful and very thorough. I trust him completely. Staff was very helpful.
Outstanding treatment for treatment & testing. I believe my third time for scope & everyone was Excellent from Reception-Nurses- Doctors. Best medical practice I have had to use. All on time but very friendly
So thankful for Dr. Nightingale. Had a wonderful experience! He takes the time to explain everything, and it is clear that he cares and wants to help you. The office visit was very efficient as well, I got back and was seen by the time of my appointment. It was around 30-45 minutes from my arrival to when I was heading home, and that is as a new patient.
Adultgastro was totally amazing. Staff kept me informed every step of the way. It was so much easier than having it done at the hospital. I give Dr Nightengale n 11 out of 10.
Dr Nightengale is one of the nicest people I have met!
Great experience, highly competent staff and doctors, pleasant environment.
Everyone was very nice, happy and very positive about me being there… like I mattered to them!!! It made my heart happy!! Dr. Nightengale was the best!!
Prep for this procedure is still awful but other than that everything was smooth, efficient, and professional.
VERY VERY BAD EXPERIENCE! DID NOT ANSWER MY QUESTION AFTER THREE ATTEMPTS BY PHONE, AT MY APPOINTMENT THEY WANTED $300 FROM ME WITHOUT NOTICE. AFTERWARDS I GOT A STAMENT SAYING I OWE DR. NIGHTINGALE $97 and another bill for $300. Today I got a bill stating that I owe $897.76 I don't know what that is about but I want be going back.
My goodness, I don’t know where to start. Dr. Nightingale is one of the most, caring, courteous, thorough GI doctors and overall, best doctor in general. It’s really rare to find a Doctor like him now a days. I am so blessed to have been referred to him.
Dr. Nightengale is an excellent physician. He’s a great listener and is so knowledgeable and helpful.
Professional and informative. Good post-procedure appointment. Thanx
Everyone was very friendly & most efficient.
I felt very at ease & most comfortable. That is why I keep going back. Thanks for answering my questions before I knew I had any.
I felt very at ease & most comfortable. That is why I keep going back. Thanks for answering my questions before I knew I had any.
