This doctor and his brother destroyed my life! Him and his brother are in the pocket of Workers Comp! I was due for more rehab and they stopped it immediately so that Workers Comp would pay no more, and my life is destroyed to this day because of them! DO NOT USE THESE BROTHERS! Oh my GOD walk away now!!! Do not use these brothers!!! I give them Negative 14 stars, please do your self a favor and turn and run! They destroyed me for $... OMG Please listen to me, over 11 years I have been destroyed! My life has been Below because of them Do Not Trust them AT ALL!!! PLEASE DONT, I am warning you! Please listen to me...Please

Just had neck surgury from one of these guys and the other after care said NO PAIN MEDS FOR YOU, I couldnt undertand that. Finally found out that I dont deserve pain relief cause he thought I was a drug addict. When I said PISS test me idiot, he did and I passed and got a simple 10 pain pills. Do Not use these doctors OMG the pain they put me through!!! I cried for weeks before getting those measly 10 pills. They suck, they are terrible! You use these brothers in arms and you will be sorry!!!

Submitted July 9, 2016

Amazing doctor. He was knowledgeable, honest compassionate , respectful and had great bedside manner. Would highly recommend Dr. Mark Duncan.

Submitted Jan. 19, 2016

This doctor did my Daddy's surgery last week. He replaced 3 bones in his neck. Dad had a heart attack a few hours after surgery and Dr Duncan came up to the hospital as soon as he found out. He checked on our family and then went in and watched Dad's emergency surgery for his heart. He went above and beyond anything he had to do. The heart attack wasn't something he could treat but he left his wife and kids to come see about us. He's what every doctor should aspire to be. Simply amazing and the most kind man. I'm thankful that he was Dad's doctor and cared so much about his patient and his patients family.

Submitted Dec. 12, 2010

The doctor didn't listen to the problem and was very arrogant in his attitude.

Submitted April 10, 2008

after 9 months of feeling ignored by other doctors in the area, I was finally approved to see this doctor. He listened to me, and within a month we knew what was wrong with me and that it required surgery. It is now 10 months post-surgery. He talked me through what he was going to do, talked to me before and after surgery, and he and his PA were both excellent with discussing/caring for some issues which developed post-surgery (due to nerve damage from the original injury). If I had to pick one area which needs improvement, it would be the waiting time for those with appointments. There were times I had to sit (on the most uncomfortable chairs!) for 3-4 HOURS past my appointment time. To me, it isn't right to have a 1pm appointment and not get out of the office until after 5pm.

Submitted April 9, 2008

He took real good care of me and explained everything that he was going to do and listened patiently to my questions and answered each one without making me to feel silly.

Submitted April 8, 2008

I was sent to Mark Duncan by my medical dr. I had lower back pain and was desperate for help.What I got was told I was too fat to work on and he suggested I get lap band surgery.The only helpful thing he did was send me to OKC to get help. If you need help go to OU medical, they are great.

Submitted April 8, 2008

I am the person who gave Dr. Duncan the good rating listed here. This is to update that rating. Due to 4 surgeries in about 14 mths(he did 3 including 2 brain surgeries) and months off work, I had to file bankruptcy. Included was the approx. $800 I owed the Dr. (He made about $20,000 from my insurance)Now according to the ENT Dr. I need the titanium plate in my throat removed due to other medical problems it is causing, some of which may cause permanent damage to my voice. I was told by the office personnel that Dr. Duncan said if I pay him the money that was included in the finalized bankruptcy he will see me, if I don't then he won't treat me again. I fill this id immoral and unethical. I am hurt, bewildered and feel like I have been medically abandoned. I hate that I am having to write this about him, I held him in the highest regard and referred other people to him in the past. I have a rare condition so finding a knowledgeable doctor is very difficult.

Submitted March 26, 2008

Dr. Duncan is wonderful, kind, knowledgable and very thorough. He always treated me professionally and caringly. Took his time to explain every detail of treatment.

Submitted Aug. 20, 2007

Dr Duncan has helped to get rid of a lifetime of headache pain and in the process created a beautiful smile that has helped me to become the person I always felt like I could be! My case was extremely difficult and a number of doctors before couldn't help at all. With Dr. Duncan the process was straight forward and easy. I'll never again see a non-LVI dentist and never again have to deal with the old kinds of dentistry that nearly ruined my mouth!

Submitted June 22, 2007