
Dr. Floyd Keith Underhill, Jr
1950 – 2025
Dr. Floyd Keith Underhill Jr. passed on to his heavenly home on 1-15-2025 at the age of 74 years, 11 months, and 20 days. He was born on 2-4-1950 at Valley View Hospital in Ada in Pontotoc County, Oklahoma.
Keith graduated from Ada High in 1968. He then attended 2 years of college at East Central University in Ada, Afterwards, Keith graduated from the University of Oklahoma Physician’s Associat Program in 1973, 1978, and, finally, in 1982 got his MD degree.
In 1985, Keith went on to practice family medicine in Stilwell, OK eventually relocating in Edmond, OK in 1996 practicing at Canyon Park Family Medicine eventually becoming OU Physicians Clinic pursuing his lifelong dream of working for his alma mater.
Keith dedicated his life to his family and career, working tirelessly as a family physician, while always putting their needs first. Over the span of his career proudly delivering over 400 babies. He was a man of immense humor and wisdom, cherishing every moment spent with his loved ones.
Anyone that knew Keith would know he was a devoted Oklahoma Sooner fanatic and truly bled crimson. He enjoyed attending games and supporting his Sooners regardless of the weather conditions whether it be a win or loss. He also enjoyed watching and supporting the Thunder basketball team in the Sooner football off season.
He married Teresa N Miller in June 1982. Keith was preceded in death by his parents Jean Sampson Marcum, Floyd Keith Underhill Sr, and Norma Underhill, and his sister Lucijean Mason, and mother-in-law Minnie Lee Miller.
He is survived by his wife, Terri Underhill of Edmond, OK. 2 daughters, Marci Warren of Stilwell OK, Monica Hardbarger of Stilwell, OK and 1 son Robert Keith Underhill and wife of Brownwood, Texas. One brother, Kevin Ledford and wife of Arkansas, KS. One sister, Suzanne Underhill Clemons of Ada, OK
He is also survived by 10 grandchildren and 5 great grandchildren. A host of friends and family including former patients.
In lieu of flowers, the family is asking for donations to be made to:
Oklahoma Children’s Hospital
In Memory of Dr. Keith Underhill, MD
PO Box 248955
Oklahoma City, OK. 73124
Services will be held at Matthews Funeral Home in Edmond, OK at 2:00 PM on Tuesday January 21. Dr. Tom Siler officiating. Graveside services for immediate family will be held at Memorial Park Cemetery in Oklahoma City, OK.
To watch the service CLICK HERE to go to our YouTube page. Click on ‘Videos’, then ‘Live Streams’.
going to miss you Doc.
Our prayers are with the family. We were shocked when we opened the notice of Docs passing. We were referred to Doctor Underhill in 2002 after moving here from St. Louis and he has been absolutely amazing. Not just helping us with our healthcare but he became a friend, always looked forward to seeing him and loved his sense of humor. You will be greatly missed doc, will see you again on the other side.
“Ever has it been that love knows not its own depth until the hour of separation”
Going to miss you Dr. Underhill… gone way too soon. My deepest sympathies go out to your family.
He was an incredible man and doctor who will be missed. Our love and prayers to you.
Our family has been taken care of by Dr. Underhill since 1996. He literally helped me to raise my children in those 27 years. I feel like a family member has died. He was an amazing man & excellent as a doctor. His rapport was one like I have never known with any doctor and properly never will again. Please know that we are praying for your family as you walk a very difficult journey ahead. Our hearts are with you as you mourn. There will never be anyone like Dr. Underhill & his memory will live a lifetime with our family.
Doc you have helped Doris and I raise our family with care as if we were part of your family!!
We had many laughs during our visits, many many discussions about OU sports 😉
We will truly miss you, but shall see you again I am sure….
Rest now, love from the Kiersten, Danny, Doris & Dan Durning
Keith was a wonderful doctor and friend to Todd and I and our family. He was my doctor for 40 years and a wonderful one. We would discuss whatever brought me in to see him and then spent time visiting about our families.
He truly cared about his patients and will be greatly missed. I also had the privilege of working with him at Stilwell Memorial Hospital. He was a remarkable man and the world would be a better place if more people were like him.
I remember once when Terri and Keith came to our house when our boys were little. When they were leaving, I said we would see him in the morning because one of the boys had an ear infection. He went out and got his medical bag from the car and saw Cade then and wrote us a prescription for his ear infection.
When Marci messaged me and Todd told me that Keith had passed away, it was like losing a family member.
Sending big hugs to your family in the days ahead and keeping all of you in our prayers. Know that your husband, father, and grandfather made a great impact on people.
Dear Terri – I knew Dr Underhill as a patient and as a medical sales provider that worked many times with Canyon Park. I started with Dr Woiwode maybe 40 years ago and migrated over later. Plus we were about the same age, many of the same interests and personality. I am a survivor of bladder cancer that Dr Underhill diagnosed very, very early and then convienced me to pursue a urologist even though I have no outward signs or indicators. Because of the OU connection, I ended up working with one of the best Uro-Oncology specialists in the field. I found your note on Next Door App this morning and have been stunned ever since. I alway enjoyed his working with students, his sense of humor, medical knowledge and warm personality. I also appreciated his dedication to his patients and their wellness. I am sorry for your loss and also for the other difficulties with the injury to your bother. Dr Underhill’s loss will be greatly felt by Edmond, Oklahoma City and all his patients. Thank you for sharing a portion of him with the medical community. Many prayers of joy, comfort and sorrow for you and your family. Well done good and faithful servant! Amen!
It has been many years since I’ve got to hang out with Keith but I cherish the time we spent at ball games and/or otherwise. Keith was a really great guy, always calm in demeanor and very patient person and had great conversation about a variety of things as well as explaining things in a way that’s understandable for a laymen like me.
I’m really going to miss Keith, or was a pleasure to know this very nice man, for he was such a giving and caring person. Can’t really stress how much of a great guy he was. He always made me feel welcome I loved that about him.
May God be with his wonderful wife Terri and the rest of the family in this time of transition. Thank you Keith and Godspeed my friend, you have lived a very full life as well as an important part of our lives! We will all miss you! ❤️
May he fly into the arms of our Lord. He was a caring Doctor to our family. Our thoughts and prayers are with his family in your time of grief.
You have kept me running smoothly for decades. We had some good laughs. I will miss you.
You were the best doctor I’ve ever had. You were so personable, professional, and had a wonderful sense of humor. Being with you in an exam room felt like being in a cocoon of caring, warmth and love. We had many good conversations over the years and I will truly miss you. My heart goes out to your family and I know you will be watching over them from heaven. God has received one of the very best men ever.
Jan Chapel
I’m sure going to miss you, Keith. Always there to lend a helping hand, listen to what I had to say or take a call anytime day or night. He was a great Doctor to work around. Took wonderful care of me and my family. Lots of fun playing cards with all of my family. Terri, Monica and all of the family, Know that he loved you all so much. Sending my prayers, hugs, love and strength in the days ahead. Marsha Cordray Baxter
Thank you Dr Underhill for always taking such wonderful care of my parents Ann & Earl Sexton when they were your patients. They always spoke very highly of you. Rest in peace
Prayers to the Underhill family during this time. 🙏
I have felt like I’ve had a big brother standing between me and illness for 28 years. I always wished for a big brother as a kid and Keith Underhill was exactly the kind I wished I had. As years passed, I needed him more and more and in 2011, a bad case of Listeria put me in the hospital. I was SO very ill, but he was there, early, every day. Sometimes in shorts and crew socks that, as sick as I was, still made me smile to myself.
He was the perfect doctor to see you through a chronic illness. I actually looked forward to my appts with him because we just had fun talking. I keep thinking of all the times I had to lean on him and how he had the biggest shoulders of all…then he’d calmly tell you what *we* were going to do next to address an illness. I love reading all the comments here because so many of us felt the same way–he was the perfect embodiment of the Family Physician, and that is something more and more difficult to find. He loved his family and the Sooners and he let me, having gotten my PhD at OSU, be his patient anyway. 😊 He even let me razz him in a friendly way about his Sooners.
This past November, my last time to see him, I was looking out the window at the tiny lake, heard him come in and I said, excitedly, “Look, Doc! There’s a crane in your little lake!” He joined me at the window and began rattling-off the many bird species he’d seen already from his office. “I sure can’t complain about the view from my new office,” he sad, obviously happy. And I was happy he had the chance to watch birds from his new office.
I will miss his dry wit; he was SO funny and he was also another kind of doctor — the kind that adult men felt good with. Men still try to avoid seeing the doctor. Not when Keith Underhill was their doctor. I talked my husband and a friend’s husband into seeing him…and they never missed appts!
To my friend and Doc, Keith Underhill, from the parable of the talents: Well done, good and faithful servant.
Our Prayers, thoughts and Love to the Underhill family. Words cannot fully express the impact that Dr. F. Keith Underhill had on our family.
As original “Okies,” my husband and I retired in California and relocated back to Oklahoma, primarily to help care for my parents. They were patients of Dr. Legako. I met Dr. Underhill when my mother was hospitalized at the Edmond Hospital. He was the doctor in charge of weekend visits. After a few years of giving 24-hour care for my dad, mother and handicapped brother, Gordon, I required a medical appointment. I had an attack of “knives in my waist/ribs” which I thought was “Shingles”! Dr. Underhill asked why I was there and I told him what I thought. After he examined me, he said you are correct; how did you know? I told him I was listening to my aunt describe the pain of her Shingles. Thank you: Dr. Underhill you cured me!
Plus, he took great care of my DS brother, Gordon. I credit Gordon’s life’s extension (64-years) with Dr. Underhill’s care, which he continually gave great care throughout the years.
Our family is sorry the doctor didn’t get to enjoy his retirement. We certainly will miss our routine appointments with him and discussing OU Sports. 🏈 God Bless you Dr. Underhill!!
Go Rest High on that Mountain; we will meet you again one day!
We are heartbroken to hear of the passing of Dr. Underhill. He took care of our family for over 16 years. He always had a smile on his face and a soft spoken way about him. We will miss him. His family is in our prayers.
Dr Underhill was a great Dr , he helped me turn my life around. With his great wisdom and advice. He will be truly misssed . Rest In Peace
Dr. Underhill was a great physician and a wonderful human being. He was an old fashioned family physician who cared deeply about each and every one of his patients. We will truly miss him. May God bless him and the family he leaves behind.
We are heartbroken over the passing of Dr Underhill. He has taken such great care of our family for many many years. We were sad that was going to retire, but also happy for him. It’s heartbreaking that he didn’t get the opportunity to do that. No one will ever replace the expert care he gave to us and so many others. He will be forever missed by the Stephens family.
So sorry for his family, friends and all of us, his patients, we are devastated! Prayers for his family and his work family and us, his long time patients!
I am still in shock. I cannot believe my medical hero and greatest confidant is gone. Dr. Underhill has been our family dr. for over 20 years.
The past 5 years I have been faced with a lot of medical issues and he was the pivotal person to get things “rolling”.
He created a very effective medical plan and made sure I was in clear understanding of what would be happening going forward.
To say we have spent a lot of time together is putting it mildly. He was always so kind and understanding and never made me feel like he needed to hurry on to the next patient. He always listened so intently to every detail and truly made me feel he cared-because he did. This made him very easy to talk with.
We talked about everything from health, to his upcoming retirement and family.
He was excited about retiring and getting to spend time with his family, but was also unsure of what world he was entering because “retirement” was unfamiliar. We had a lot in common in this arena as I was a few years ahead of him on the retirement stage. So many of our last year’s conversations were regarding this.
I’m so sad for him and for his family that he did not make it to this club. I believe he’s joined a much better club where he’s probably doing his favorite things non stop and he will be with his family everyday.
Throughout our lives we meet many people from many different walks of life. Some we remember, some we don’t and some we feel intrigued by. Dr Underhill was one of those rare people in life that you hope you meet that truly impresses you in every way. He was truly one of a kind.
I believe if the world had more drs and more kind people such as him in it, we would have a much better world to live in. Dr. Underhill clearly defines the difference between a good dr. and a great dr. He was a GREAT dr. and will be GREATLY missed!
Dr. Underhill was my doctor for at least 35 years. All the things others have said about him are so true. He never was in a hurry and took his time to listen and try to figure out the best way to approach my problems. I always trusted him and considered him not just a Dr. but a friend. I’m truly sorry he didn’t get to spend time as a retired person as I know he deserved it. May God be with the family as they go through this time of grieving. 🙏
I was already a patient at the Clinic, when the Dr. I had retired. I was blessed with Dr. Underhill becoming my new Doctor! For 28 years I had the BEST medical care a person could
ever receive! He was always kind, considerate and caring. He LISTENED to what I had to say and always had the answers to the questions I had. He was a very special Dr.! I know there are many patients besides myself, that he made feel like they were his Family! And yes he was an
Avid OU fan! I always asked him if he was following them around the USA and he would give me a grin, like I knew better. I did, but enjoyed giving him a little OU static!
I will miss him, he saved me from myself more than once! He will NEVER BE FORGOTTEN! Thoughts and prayers are with his Family during this difficult time. God Bless you all.
Name correction!
I am so sorry for your passing, Dr Underhill. May God bless you and all the deceased of today, yesterdays and tomorrows. May God provide comfort and peace to them and their loved ones. And may God provide full faith to them that they will be reunited again in your tender mercy. May all the deceased be given missions on this earth to do your will and to help those they love. Thank you Dr Underhill for all the kind care you provided to me over the years.
My medical hero. That’s a term I saw while reviewing the comments. I m not a person of many words and that description gives me some type of verbal context to describe my experience as a patient of Dr. Underhill. So many times his diagnosis and care saved me from what could have been medical disasters In fact I called the clinic to make an appointment to discuss my concerns about a questionable ER situation I recently experienced when I was informed of his passing. I’m devastated for his family as well as his work family. I just have to believe that God in heaven knows what’ best and make no mistake in his doings. I am grateful for the 28 years the Lord provided me care through the hands of Dr. Underhill and my prayer is that his family and and love ones find peace and comfort on the journey of healing.
My buddy,
I miss our laughs, morning coffee, conversations, and random messages through out the week. Don’t you worry about Monica, I will take great care of her and always love her! She is in good hands! I know you will be right there with us cheering on our Sooners at every game. Boomer Sooner and Go Thunder!!! Don’t worry I will always make sure the car has gas!!! lol 🙂
Love you and miss you so much buddy,
Jeremy
Dr. Underhill was a wonderful doctor in so many ways. In addition to being highly skilled at what he did, he was always willing to answer questions and easy to talk to. I always felt good leaving my appointments with Dr. Underhill. I will miss him!
I am not surprised to hear so many good things said about my husband. Many times I told him I wish she would treat me like a patient. There were so many times he would come home, eat dinner and go straight to his computer to finish up what he had not had time to finish at the clinic. He was so committed to his work. I know it did not feel like work to him because he enjoyed it so much. Many times it was hard to hold a conversation with him because he was always thinking about his patients. He was so giving of his time and always so caring.
He did so much for me. And of course now I wish I had not been so dependent on him. There are things around the house that I can’t find. There’s no way I will ever be able to fill his shoes. I am lost without him. One of my cats coco adored him. She has not been the same since Keith passed away. She sleeps in his closet. And she just stares at his chair but does not go near it.
Keith fed the deer and really enjoyed seeing then come into the feeder. The evening of his funeral there were four huge buck and one was a 13-point. I stood there and cried cuz they were a gift from Keith.
I’m so very sad he did not get to enjoy his retirement. He was really looking forward to it. I feel like he got cheated. He has always wanted to go to Hawaii and I was looking forward to us going together.
I don’t know how I’m going to get through this. The days have been so long since he passed.
Jack and Carol my great horned owls have always nested the first of February for the past 8 years. I look forward to this to get me through the winter. I will be lost if they decide not to nest here this winter.
I am so thankful to hear how much Keith was appreciated. I was truly blessed to have him as long as I did. May he rest in peace.
Terri, Dr. Underhill was my fathers doctor in Stilwell, and still have family Vanderheiden there. I was very surprised when he came to Edmond. I too lost my husband 6yrs ago. Keith took care of him from the time he began praciting until my husbands passing. He also was my doctor. He made us feel like family. I just saw him a couple months ago. We talked about his upcoming retirement and all the things you and he were looking forward to. I am so sorry.. If you ever need someone to just talk to or if there is anything I can do, please call me or text me. Kimberly has my phone number.
I am sad to hear this news. Doctor Underhill was one of my mentors during rotations as a PA Student. I had a rotation in Stillwell. One of the more notable experiences with him was when I was seeing patients at his office. I was standing near a desk looking over something when he simply walked up behind me and said, ‘Hold still’ . I had no idea what he was doing, but I trusted him. I then felt a little bee sting on my shoulder. When I asked him what he did, he said that he injected some steroid in the little keloid I had on my shoulder. Years before, I had a mole removed, and it formed a little keloid. I am forever grateful he did that because he took the time to care enough to do that for me. Today, I am walking around with a better looking shoulder because of him! More importantly, it’s a reminder that there are people that truly care about others. He did this for his patience as well. It really is the little things. I so enjoyed his rotation. He was one of the few mentors that really allowed me to formulate my own plans and implement them. It felt really good to be just a little autonomous as a PA Student. Rest in peace
Dr. Underhill…until we meet again!
Live well-be well.
Amy Greco
Dr. Underhill was always so caring and supportive. I truly believe I would not have gotten through some tough times without him. I’m heartbroken. He was my doctor for nearly 30 years and I considered him a friend. During my last visit a few months ago, we discussed all of the wildlife we were seeing around our homes and his retirement. I got teary eyed discussing my last visit scheduled in March. I sure will miss him. 💛
Dr. Underhill was a good doctor and a good man- always really listened, always upbeat, always positive. He will be missed. My condolences.
My heart is breaking… Dr. Underhill was the best!! Prayers for his family. RIP Dr. Underhill 😞
good guy. my g.p since & in 1996 soon after he joined canyon park. as adult, i’ve never had flu ’cause dr. underhill always on my case about getting an annual flu shot!!!!
Dr Underhill was the best doctor I ever had. Both my wife and I appreciated his wit, manner, and professionalism. He was the complete family physician and a wonderful human being. God speed Kieth.
Doc:
We had a great time togather. I was in Hi school when I started seeing you in 1985 @ Canyon Park. You listened to my illnesses and never made a snap dicision. Doctors these days are like mechanics. They type in symptions and the computer tells them what to perscribe. Jesus has a special placed for you.
Psalms 91: Whoever dwells in the shelter of the Most High will rest in the shadow of the Almighty.
God Bless You