Glen O'Sullivan, MD, FACS - Asante

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Glen O'Sullivan, MD, FACS

Glen O'Sullivan, MD, FACS

Patient Rating
4.78 / 5 (Based on 278 reviews) Read Patient Experiences

Orthopedic Surgery and Spine Surgery

  • Accepting new patients

Services offered

Spine Care


Asante Orthopedic Surgery and Sports Medicine – Ashland
269 Maple St.
Ashland, Oregon 97520
Main: 541-201-4700
Asante Spine Care
1311 E. Barnett Road, Suite 201
Medford, Oregon 97504
Main: 541-789-6000
Fax: 541-789-6001

About this provider

Glen O'Sullivan, M.D. joined Ashland Orthopaedic Associates in 1999 as a general orthopedic surgeon specializing in spine surgery.

Born in the U.S.A., Dr. O'Sullivan graduated from England's Wimbledon College in 1979. He received his medical degree from St. Thomas' Medical School, London, England in 1984. His U.S. training included orthopedic residency at Stanford University Medical Center, which he completed in 1991. Dr. O'Sullivan completed his Spinal Surgery Fellowship Training in 1992 at Sir Robert Jones and Agnes Hunt Orthopaedic Hospital, Oswestry, Shropshire, United Kingdom.

He served from 1992-1999 as co-director of spine service and from 1995-1999 as Chief of Trauma Service, Division of Orthopedic Surgery, Stanford University School of Medicine in Stanford, California. From 1992-1999 he was also Director of Spine Service, Palo Alto Veterans Administration Hospital, California.

Dr. O'Sullivan holds medical licenses in Oregon and California. He is board certified in orthopedic surgery and is a Fellow of the American College of Surgery.

Education and training


St. Thomas' Medical School, London, England, MD


Stanford University Medical Center, Orthopedic Surgery


Sir Robert Jones and Agnes Hunt Orthopaedic Hospital, Oswestry, Shropshire, United Kingdom, Spinal Surgery


American Board of Orthopedic Surgery

Patient experiences

March 28, 2022
I appreciated the assistant in the Medford office for being prompt in preparing the appointment and other work related to me.
March 27, 2022
Dr Osullivan is and always has been outstanding in the care he gives to help me find a way to fix or improve the problems I've presented. He's an excellent Dr.
March 25, 2022
Dr. O'Sullivan!
March 23, 2022
appreciate both Dr. O'Sullivan and his staff's attention and respect
March 23, 2022
Dr O'Sullivan and his staff are all exceptional. They are quite polite and professional.
March 21, 2022
Execellent personal care from Dr O'Sullivan. Dr. O'Sullivan personally wheeled me to my car after the procedure and made sure I was ready to go home.
March 13, 2022
Dr. O'Sullivan is very knowledgeable, clear and has a sense of humor.
March 05, 2022
Dr. O'Sullivan took a lot of time with me in my pre-op appointment answering all my questions and concerns. I really appreciated that.
March 03, 2022
Both Dr O'Sullivan & his staff
March 03, 2022
Was very pleased with all at Dr. O'Sullivans office. Thank you
March 02, 2022
Everyone I enteracted with gave me outstanding service.
March 02, 2022
All of the staff were great for my initial visit.
March 02, 2022
Dr, Glen O' Sullivan and Tracy have been great and MyChart invaluable for consistent communication. I did notice family history is not in MyChart. I am assuming the information I? gave has not been entered. No big deal. Very busy office
March 02, 2022
Susan Robert is outstanding member of your team.Dr. Reid is great and I am looking forward to working with Dr. O'Sullivan.
February 28, 2022
I found the staff, including Dr. O'Sullivan, friendly and helpful. Dr. O'Sullivan listened to my concerns with my back pain and offered resolutions.
February 23, 2022
The whole office, nurses and doctor are the best. They give you all the time you need and are very informative about everything I ask. I love them and would not change a thing
February 23, 2022
Glen Osullivan, Chad [ ] & Laura [ ]& the entire staff @ the Ashland office.
February 17, 2022
Dr. O Sullivan. He is the best.I have seen him twice now and every time it has been a very good experience.I always look forward to my next visit.
February 16, 2022
I like Dr. O'Sullivan's attitude and desire to address my needs. He is a cool guy. He is very easy to talk with. He is outstanding!
February 12, 2022
Dr. OSullivan was easy to talk to and get information from.
February 12, 2022
Dr. O'Sullivan
February 11, 2022
Dr. O'Sullivan and I got off to a very rocky start,but he has turned it around completely and I almost feel as if we have formed a friendship through those trials and he has been humble and kind. These are attributes I admire in any one and am thankful for the chance to let you know.
January 29, 2022
Everyone in the office was kind outgoing and Dr osullovin is a respectable doctor
January 27, 2022
They were all professional and very nice
January 27, 2022
January 27, 2022
Dr. O'Sullivan was the best. Came in ready to go and like how are we going to get rid of your pain today. He has a very good bedside manner. I enjoyed talking to him. I need to talk to him soon about an issue.
January 18, 2022
DR. O'Sullivan and his nurse Tracy.
January 17, 2022
I have been a patient of Ashland Orthopedic for many years and have always been impressed with not only Dr. O'Sullivan, but all the staff in the office. Each and every employee is courteous and efficient,
January 14, 2022
This procedure was the most difficult task I have ever had to go through in my life. This office, Doctor and staff, was always one step ahead of me and anticipated what I was going through at every stage and knew what to do to make it more easier for me. Their care, understanding and experience was nothing short of stellar, I cannot thank them enough,
January 06, 2022
Dr. O'Sullivan Is tops. He listens, asks questions and involves my in the tota sphere of my care.
January 06, 2022
The nurses both RN's and LVN's during the spinal clinic at Asante Ashland Hospital! All very comforting, professional and warm.
January 04, 2022
this was my first visit with Dr. O'Sullivan, I was very pleased with the care and advice I received
January 03, 2022
they where all good and helpful
December 29, 2021
Dr. O'Sullivan is an outstanding doctor. I appreciate being able to see him for appointments and [service] in Medford.
December 27, 2021
I was seen right away and the staff was very courteous.
December 25, 2021
Dr. O'Sullivan- always.
December 24, 2021
Oh, yes, Courtney . I do not have her last name, but Courtney is just wonderful. She has all the qualities of a great caregiver to a very high degree. She intelligent, patient , informed and is very open and honest. When in considerable pain , Courtney found a ways to get me expedited to treatment. I now enjoy a very high quality of life and I am nearly pain free.Far more so than I ever hoped . I walk miles, work out regularly at the Y and I am a much more vibrant person generally. I ride my bikes and am taking up pickle ball. PlusI am getting married. In three words who do I have to thank? (Me, of course...I put in the work and will do so tomorrow as usual )Then there is Wonderful Asante, Thanks so very much. Your concern, Asante, with getting the management end right in such difficult times. Amazing.Finally Courtney and Dr. O'Sullivan, more skilled and compassionate people than they are... just not that common.
December 23, 2021
Courtney in Ashland was fabulous on the phone and very helpful. The medical assistant in office was wonderful also!
December 15, 2021
Doctor O'Sullivan was incredible. I really appreciate it everything you did for me
December 13, 2021
Yes, my complete experience with Dr. O Sullivan and the rest of the team, was exceptional. I would recommend them to anyone.
December 13, 2021
Dr Osullivan
December 13, 2021
Dr O'Sullivan has always been courteous and even tough I was not ready to try any of the new technology he would let me know what was out there !
December 09, 2021
Non emergency messaging in My Chart and whoever is responding to those messages are doing an outstanding job.
December 09, 2021
Dr. O'Sullivan is a really terrific dr. He always listens and responds to my questions. I appreciate his honesty about my medical condition.
December 02, 2021
Dr O'Sullivan is awesome!!!
November 29, 2021
Dr O'Sullivan! He took the time to address multiple issues
November 24, 2021
Dr. O'Sullivan
November 24, 2021
My Doctor
November 24, 2021
October 24, 2021
Every one did well during these trying times
October 15, 2021
Tom is an amazing person and he is genuinely concerned about my pain and trying to find what my problem is. He referred me to doctor iO'Sullivan and he's just as amazing. He is truly concerned about my pain and how to go about fixing it! I have all the confidence in both of these providers and feel truly blessed to have found them!!!
October 14, 2021
I find the receptionists and the nurses extremely personable and helpful.
October 14, 2021
dr O'Sullivan
October 11, 2021
Dr O' Sullivan
October 11, 2021
Glen Osulliva
October 08, 2021
Dr O'Sullivan
October 08, 2021
Dr. O'Sullivan
October 08, 2021
October 08, 2021
I absolutely love Dr. O'Sullivan, he is always concerned about my current health issues and right on top of providing the necessary treatment for them. I also love the way he remembers personal matters in my life. He is truly an exceptional doctor.
October 08, 2021
Dr. OSulivan's nurse and surgery scheduler at the Ashland office are very helpful and kind.
September 27, 2021
I always receive outstanding service and care at Asante Orthopedics Ashland. I've been a patient of Dr. O'Sullivan's since October 1998 and I have always been very happy with the care he gives me. Dr. O'Sullivan's staff treats me with respect and courtesy and always greet me in a friendly manner and call me by name. Dr. O'Sullivan is the best in every way!!
September 27, 2021
Adriana who has helped with my workman's comp has been more then patient and always very responsive!!
September 25, 2021
Dr. O'Sullivan has worked hard to help me at a difficult time.
September 23, 2021
Dr Osullivan
September 22, 2021
Dr. O'SULLIVAN was very thorough with my neck, having eliminated any other possible problems prior to doing the double disc replacement. I will use Dr. O'Sullivan again without researching anyone else, I trust and believe that his priority is my best interest.
September 15, 2021
i had a good vist with the doc !!!!!!!!!!!!!!!
September 15, 2021
Every person in Dr. O'Sullivan's office I interact with have been wonderful! I'm thankful for Dr. O'Sullivan and his staff.
September 15, 2021
Dr. O'Sullivan
September 11, 2021
Chris [NAME] and the guy who gives the shots have given me excellent care.
September 08, 2021
Yes my doctor
September 08, 2021
Prior to working for Asante, Dr O'Sulivan performed several surgeries on me. All had good outcomes, with few to no complications. I am thankful to have him as one of my physicians.
September 08, 2021
The very kind and patient ladies at the front office..I was certain that my appt. was at a certain time. Absolutely sure of it! Adamant about it.. I was WRONG.. the kind ladies at the front office managed to squeeze me in and were very patient and helpful to me even though I was about as prickly as could be.Then Dr. O'Sullivan came and was so kind I couldn't believe it. Even though I was a complete stinker. I guess I won't complain about not getting an MRI appt. , at least not for another week..
September 01, 2021
There was a nurse at night but I don't remember her name. I was listening to my music doing a little singing and dancing and she joined in. I felt comfortable.
September 01, 2021
Dr. O'Sullivan is an awesome surgeon and dr , he takes the time to explain everything to you so you understand what you talked about when you get home, thank you so much
August 26, 2021
the people in this drs office are great they are very caring people about my heath they care very much about me, thank you all for being there for me, [NAME]
August 25, 2021
I feel as if Dr. O'Sullivan truly cares about his patients. He seems to be a very kind compassionate physician. I truly admire his ability to problem solve for each patients needs. I feel he is able to do this because he listened, is thorough in his diagnostic evaluation, and has the ability to think outside the box. I love his down to earth, humble way about him. He's like talking to an old friend.
August 21, 2021
Dr. O'Sullivan is great at assisting me in trying to get refferals and prescriptions for additional imaging studies, PT, and pain management care. He listens, understands that we are in a fight with the insurance company to apporve any treatment plans at all, and tries to work with me to find options which will assist me while wait for the insurance company to meet their legal and medical obligations of my contracted health plan. Dr. O'Sullivan's ongoing efforts on my behalf are greatly appreciated.
August 19, 2021
They are awesome!
August 19, 2021
Straight forward and to the point.
August 18, 2021
Dr O'Sullivan is an outstanding Orthopedic Surgeon and I have great respect for Dr O'Sullivan for his knowledge, experience and professionalism.I believe Dr O'Sullivan is the best of the best and will definitely ask Dr O'Sullivan for my surgical needs.
August 18, 2021
This place is AWESOME! Everyone that works there are AWESOME! COURTEOUS, RESPECTFUL and just GOOD PEOPLE.
August 16, 2021
The entire staff was extremely courteous and professional.
August 14, 2021
the doctor took time to go over my issue with time and care it was a very good app.
August 14, 2021
Dr O Sullivan is an outstanding surgeon. He did surgery on my back 20 years ago when others wouldn't get involved. I feel incredibly blessed to have him again. Thank you
August 13, 2021
Dr O'Sullivan was very knowledgeable about my case and explained everything to the t about what out plan is going forward to fix me I have recommended him to many people
August 05, 2021
I think it is outstanding that there is a plan in place to help me get my life back.
August 04, 2021
It is a total privilege to have Dr O'SULLIVAN in on my care plan, he is wonderful
August 04, 2021
Thank you for taking such great care of me. I really appreciate Dr. O'Sullivan and his staff.
July 28, 2021
Ryan, Kathryn, Laura and Dr O'Sullivan all provide excellent care and even pretended to laugh at my dumb jokes. Thanks to them all.
July 28, 2021
I have only had one visit and I am very impressed with the Spine Clinic team.
July 22, 2021
Dr. Glen O'Sullivan
July 21, 2021
Dr. O'Sullivan is a very caring physician and watches out for my best interest. I am grateful.
July 21, 2021
The care i get from this office is great they care about my heath from Day 1 thank you for caring about me
July 17, 2021
Doctor Glen Osullivan
July 14, 2021
Everyone in the office is exceptionally helpful
July 14, 2021
Dr. O'Sullivan and his back office staff have all been wonderful!
July 14, 2021
Yes my doctor himself was amazing and very funny. He is professional but also has a good sense of humor and its the perfect combination to have in his career field.
July 14, 2021
Tracy the nurse was very good and kept getting back to me about a mess up with filling a prescription.
July 14, 2021
Everyone I've had interaction with has been very professional, knowledgeable & courteous.
July 13, 2021
Dr O'Sullivan was amazing. He was very attentive and paid perfect attention to my issues and was able to lay out plan options in an easy, understandable way and then get started on my chosen plan immediately. My visit with him was the best orthopedic care I have gotten ever.
July 05, 2021
I greatly appreciated the extra time Dr. O'Sullivan spent with me at my first appointment. Tracy was also excellent. I am anticipating that Dr. O'Sullivan's follow-up on my upcoming MRI will be thorough, and that he will have already spoken with Dr. [NAME] of Medford about my past tests & the Intracept procedure that was proposed by that doctor.Thank you.
July 04, 2021
Dr. Glen O'SullivanTracyCourtney
July 01, 2021
I have complete confidence in Dr O'Sullivan's abilities to restore my health. His staff have always been very helpful.
July 01, 2021
Dr Glen O'Sullivan has always been an outstanding doctor and surgeon. He first performed surgery on my neck in 2012. My next surgery that I needed I found out about after I had moved to California. I waited until I moved back to Jackson County so Dr O'Sullivan could do the surgery, removing bone spurs in my left shoulder. Now I have a torn rotator cuff in my right shoulder and another herniation in my neck. I wouldn't allow any other surgeon to do the surgery. I trust Dr O'Sullivan implicitly. He is the Best surgeon in So. Oregon!
June 23, 2021
A clear explanation of options to explore regarding my condition
June 23, 2021
Dr Glen Osullivan is an outstanding Orthopedic Surgeon and I was very impressed with his knowledge, professionalism and desire to provide the correct treatment for me.His approach to gain more insight and information was important for me to see and gain the confidence I needed. Very pleased with Dr Glen
June 23, 2021
Prior to "Ashland Orthopedics" becoming" Asante Orthopedics Ashland," their reputation stood on its own merit and was held in high regard. Thus far, I would say the quality of care continues to be excellent. I look forward to the continued care I am anticipating as we move forward to address the issues with my lower back. I am in good hands.
June 20, 2021
All of Dr. O'Sullivan's staff were very professional, friendly and helpful. I can't recall anyone specifically.
June 19, 2021
Dr. O'Sullivan communicable a very caring attitude towards me whenever we have an appointment.
June 17, 2021
Everyone was outstanding
June 17, 2021
Dr O'Sullivan is without a doubt, not only one of the most knowledgeable doctors regarding SCI (spinal cord injuries), but is one of the best doctors I have ever encountered in my life. I come from a family of doctors and do not feel I could have been treated better by ANY of them if they were specialists in my injury field. It is not a stretch to say that Dr O'Sullivan has bmade an extremely positive change in my life, and I can not recommend him highly enough. My thanks also go to his staff who have never been anything less than phenomenal!
June 17, 2021
I am very happy with the way that doctor O'Sullivan did not just make his opinion based on the MRI but had all possible problems tested to know what procedure that I needed. This kind of care isn't always the case, I am thankful that I was able to connect with Doctor O'Sullivan, he made me feel confident in the choice made.
June 17, 2021
Tracy Dr. O'Sullivan's MA & Amanda Dr. O'Sullivan's receptionist ! These 2 ladies were very exceptional when it came to everything I asked for or anything I needed them to do for me ! Words can not do them justice . What a pleasure it was for me & my wife to have them taking care of all my health needs & questios ! The health care society needs to copy a chapter out of their book of how to treat & meet a patient's needs ! They are absolutely the best ! Thank you Tracy , Amanda & all the staff working for Dr. Glenn O'Sullivan !!! []
June 10, 2021
June 09, 2021
I was in quite a bit of pain when I called for an appointment. Dr OSullivan was not in that day but they got me in the next day which I much appreciated.
June 09, 2021
All of the staff was really kind and helpful.
May 29, 2021
Dr. Glen O'Sullivan, has always taken wonderful care of me, He ensures that everything that can be done for my injury is and that my pain is controlled as much as possible. I trust him explicitly.
May 26, 2021
Dr. O'Sullivan is an outstanding medical practitioner.
May 24, 2021
Very happy with my outcome. Moving forward with my life. Thank you all at
May 21, 2021
gave a high grade to all staff the last time I had a procedure.
May 03, 2021
Adriane was amazing getting my surgery approved so quickly with my insurance. With that I'm very grateful. To be in even a small amless pain it is amazing. Thank you for all you did for me. Janet
May 03, 2021
I appreciated Dr. O'Sullivan's attentive listening and clear explanations and his thoughtful understanding of my situation.
May 02, 2021
I was left in the treatment room for well over an hour waiting for the doctor. When I finally left the treatment room to find out what was happening he came rushing down the hall waving papers saying Did I show you your pictures? I told him I have not even met you and no, you have not shown me my pictures. It was extremely stressful day for the clinic whole schedules were off the doctor was beyond stressed. I did not feel met or cared for by the announcement of the nurse that took me to the Treatment room, who handed me pre-surgery materials when I had not even seen the doctor nor agreed to surgery was offensive. If you can slow down, look your patients in the eye and receive the vulnerability that they are in, it would go along way to creating a kind and caring atmosphere I am sure you're interested in.
May 01, 2021
Dr. O'Sullivan
April 29, 2021
All of the office staff and nursing staff are very respectful, kind and helpful.
April 29, 2021
Was very impressed with Dr. O Sullivan and all of the staff I had contact with.
April 26, 2021
I'd say most likely Jeremy [ ]. After 3sessions of various shots had limited effect, he brought up the spinal cord stimulator which I am now pending for. Hopefully the trial can happen soon!
April 24, 2021
I feel like I am in good hands and looking forward to a release from chronic pain
April 23, 2021
Dr O'Sullivan and his staff, including the PA that works with him are amazing. I was a patient of Dr [ ]'S for 30 years before his retirement and feared I would not be able to find a doctor as good as he was.... Dr O'Sullivan is THAT good and I'm happy to have him as a provider.
April 16, 2021
The head intake person organizing all the lab tests. He was incredible! I'm not sure who he was but he had dark hair and was a great communicator!
April 16, 2021
Very efficient organization!
April 16, 2021
O'Sullivan is, and continues to be, a specialist I trust to do what is necessary, effectively and efficiently.
April 12, 2021
De O Sullivan
April 12, 2021
Chris was exceptional. He knew what he was talking about everytime we talked. Dr O was great he really explained things to all everytime he slid in, I had 5 people that recommended him and I'm glad I could see him. All the RNs and CNNs were amazing. They worked their tails off. The rooms looked like they could use a little help. Plus I had two roommates that either had visitors til after 10 pm or who complained all night.
April 12, 2021
Glen O'Sullivan possesses attributes that transcend medical treatment and attention. He off the chart in ways I will not address here. My situation was (is) dire. No blood going to my right hand. Asked Glen to put me on the ‘vascular' fast track. I received an angiogram that day and met with a vascular surgeon the next. Tough to impress me, but Glen's attention and alacrity (on my behalf), saved my hand. (He also trimmed my L1-L4 in 2016 and I play competitive BBall & PBall today, because of his fine work. (I understand it's all part of a day's work for him; but for me/us, it's more accurately, a new opportunity to live a full life again.). My wife and I have a history with other surgeons at this facility as well (pre Asante absorption), that we are ultra thankful for.
April 01, 2021
All of them was very caring
March 17, 2021
The staff were all friendly,perfessional
March 15, 2021
Front staff super efficient
March 15, 2021
March 12, 2021
The staff is friendly and efficient and the care I get is always outstanding. Dr. O'Sullivan has been my orthopedic surgeon for 21 years and he's simply the best!! He listens, he's extremely efficient and he cares. I wouldn't go to anyone else!!!
March 12, 2021
Tracey, Dr. O'Sullivan's MA, is outstanding. She patiently responded to all my messages. I really appreciate her.
March 12, 2021
Dr. O' performed surgery on my lower back. He explained that it takes six months, sometimes up to a year to recover. I'm finding this to be true as the recovery has been slow but steady. Some days I feel great and some days not so good. BUT that's because of the arthritis.
March 10, 2021
Dr. O'Sullivan and the nurse Tricia. Also, Amanda at the front desk was very good.
March 08, 2021
The staff is excellent. The peri operative nurses etc. we're especially helpful
February 22, 2021
Dr O'Sullivan was open to my ideas of what treatment I should receive.
February 22, 2021
The entire staff including PA& nursing
February 12, 2021
They all were.
February 11, 2021
It was all very well done and I appreciated the excellent service. Jerry
February 04, 2021
The nurse for Dr. O'Sullivan is always very friendly and professional. I believe her name is Tracey.
January 31, 2021
Do Surgeons get any better than Glen O' Sullivan? No, I've been seeing him for about 5 years and he operated on my back (L1-L4) in 2016 Glen expertise and professionalism is balanced with the great attributes of humor and being personable Excellent Office Personnel are OK, but the nurses are outstanding


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As the largest health care provider in nine counties, Asante provides comprehensive medical care to more than 600,000 people throughout southern Oregon and northern California. Our facilities include Asante Ashland Community Hospital in Ashland, Asante Rogue Regional Medical Center in Medford, Asante Three Rivers Medical Center in Grants Pass, Asante Physician Partners and additional health care partnerships throughout the region.