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Glen O'Sullivan, MD, FACS

Glen O'Sullivan

Asante employed provider

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Glen O'Sullivan, MD, FACS

Patient Rating
4.82 / 5 (Based on 207 reviews) Read Patient Experiences

Orthopedic Surgery and Spine Surgery

Services offered

Spine

Call to Schedule (541) 201-4700

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Locations

Asante Orthopedic Surgery and Spine Care – Ashland
269 Maple St.
Ashland, Oregon 97520
Driving Directions
Main: (541) 201-4700

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

Education

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

Residency

Stanford University Medical Center, Orthopedic Surgery

Fellowship

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

Certifications

American Board of Orthopedic Surgery

Patient experiences

September 17, 2025
I always receive the best care when I see Dr. O’Sullivan. The staff is fantastic and Dr. O’Sullivan listens to me and cares about my health. Dr. O’Sullivan has been my orthopedic specialist for over 25 years and I trust him with my health needs.
September 17, 2025
Dr. O’Sullivan
September 14, 2025
I really appreciated how Chris [ ] got me in to see Dr. Sullivan the very next day!!
September 13, 2025
Dr. O’Sullivan’s
September 12, 2025
Yes all the staff and especially Dr Osullivan . All the staff and Dr Osullivan is outstanding .
September 10, 2025
The doctor took time to listen, discuss options and allowed for our input to strive for a good outcome.
September 07, 2025
If I could give Dr O’Sullivan a higher number than 10, he would definitely deserve it! His caring, understanding, patience and expertise as a surgeon made my whole surgery experience go smoothly and with confidence in Dr O'sullivan! From Mykenna at the front desk, Susan ( who goes beyond kindness to help with everything!!! Amazing!) to Jason [ ] and Amanda, Maggie who filled in for Susan, Courtney that called and scheduled my [ ]. Susie who called before [ ] to discuss [ ] and answer questions. ALL the hospital staff, nurses, cafeteria workers. Anesthesiologist (Jordan?) in room nurses. I was made comfortable and handled with TLC in every way. If I need medical attention in the future Ashland Asante Orthopedics and community hospital will be my choice. I recommend to all I know.
September 04, 2025
Dr. O'Sullivan continues to be a very important member of my [ ]. He has ALWAYS been professional, informative, and taken the time to discuss, my health needs at any level. I truly value his knowledge, input and exceptional care given to me. [ ]
September 03, 2025
Dr. O'Sullivan's nurse and assistant were outstanding and very helpful.
September 03, 2025
Dr. Glen O'Sullivan
August 27, 2025
Glen Sullivan is a very good doctor we like him a lot
August 27, 2025
They were all great people
August 23, 2025
Doctor Osullivan
August 20, 2025
Dr. Glen O'Sullivan is clearly outstanding in his field. I have confidence in his skills. My [ ]. It would appear there is a problem with [ ]. This is through no fault of Dr. O'Sullivan or anyone for that matter. [ ] can happen. I do not recall anyone bring that to my attention prior to the [ ], not that it would have made a difference. Often time I rely upon Dr. Google for further consult. Looks like I will try [ ] to rule out whatever and then proceed with [ ]. In closing, it has been my experience that Dr. O'Sullivan is exceptional in [ ] as well as his interactions with his patients.
August 20, 2025
I really enjoyed Dr OSullivan. He’s very knowledgeable, friendly and helpful. He made me feel comfortable and relaxed and that’s important when discussing [ ]!
August 15, 2025
Craig the PA gave good information on what to expect before and after [ ] and during recovery.
August 14, 2025
Susann, Dr O Sullivan, also the knee specialist doc
July 30, 2025
The entire staff is amazing, friendly and knowledgible. Best office in the valley.
July 30, 2025
Everyone
July 30, 2025
Dr O'Sullivan as usual is the best!
July 30, 2025
Dr. O Sullivan and and his Medical assistant were very kind and explanatory.
July 29, 2025
yes, Dr. O'Sullivan was excellent with his understanding of my condition and the treatment need to fix it!
July 23, 2025
This was my first experience at Asante Orthopedics in [ ]; it was a positive experience.
July 23, 2025
Dr. O’Sullivan always shows concern for my health and well being. He is extremely informed about my condition, offers treatment information readily, and is empathetic about my [ ].
July 23, 2025
The whole office from clerks to nurses to doctors were great
July 19, 2025
Glen
July 16, 2025
Dr O'sullivan and his assistant.
July 05, 2025
Dr Sullivans nurses
July 05, 2025
dr Osullivan
July 03, 2025
Jason [ ] and Glenn O'Sullivan are very professional. They are very efficient and knowledgeable regarding my requests, concerns, ailments, and overall care. Extremely thoughtful and i am very happy with their care.
June 30, 2025
I can't say enough about Dr. O'Sullivan; he's always patient, knowledgeable, and listens carefully to what I'm trying to explain about my symptoms and concerns. I couldn't ask for anything more from a physician.
June 30, 2025
Dr. O'Sullivan is outstanding!
June 29, 2025
Dr. O Sullivan and his PA gave exemplar care. His TEAM work as a unit. That makes a huge difference.
June 28, 2025
The doctor is great
June 28, 2025
Dr. O'Sullivan is the best. I'm in a [ ] and I don't know what I'd do without him. Plus, he's always so kind and funny. A great surgeon!
June 28, 2025
Dr O'Sullivan & Jasson [ ] (sp?)
June 27, 2025
The surgical and support staff were exceptional. They created a very warm and relaxing environment.
June 27, 2025
Nobody is perfect. Mr O Sullivan is very focused on going down a path for results sometimes he doesn't catch what you say. Over all an outstanding doctor.
June 27, 2025
All staff were helpful and knew their jobs. O'Sullivan is a busy MD, but he took the time to explain options for further care
June 27, 2025
Thanks for taking care of me.
June 27, 2025
every body was nice and plight, My post master Carry of Gold Hill told me about Glen O'Sullivan and she was right
June 27, 2025
Dr O’Sullivan’s Medical Assistant Susan, very helpful.
June 27, 2025
Everyone there is wonderful.
June 26, 2025
Dr. O'Sullivan ALWAYS provides the knowledge and care I need. Everything is explained to my understanding and he also goes over any options and alternatives to address my issues. He is one of the very few Doctor's that I truly trust. His Staff follows his lead and are always very professional and helpful. Great Job!!
June 26, 2025
All that I've came in contact with in this office, were kind, informative, helpful,and attended to me during this stressful, painful, confusing time. Thank you.
June 26, 2025
Dr. Osullivan really showed me full attention and explained exactly what our plan was going forward.
June 26, 2025
Dr O’Sullivan is a very fine doctor and always tries to help me achieve the best results for any procedure or option he provides.
June 25, 2025
Dr O’Sullivan took extra time to listen and help me with my [ ]. I feel he is really trying to help me and understand my needs.
June 25, 2025
My recent followup visit with Dr. O'Sulllivan was excellent - his pleasant nature is a bonus! I so appreciated the care + time he took to answer my questions + explain what the [ ] actually entailed, as well as the recovery time - so very helpful. I feel empowered, informed + more at ease about my continuing healing process + limitations. I also really appreciated his review of my [ ] + the excellent advice he offered going forward with [ ]. THANK YOU SO MUCH, DR. O'SULLIVAN, FOR THE STELLAR CARE!
April 06, 2025
I’ve been a patient of Dr. O’Sullivan’s for over 20 years and I always get the best care possible! He’s the best and I don’t go anywhere else for orthopedic care. Thank you Dr. O’Sullivan and team!!!
April 05, 2025
Dr. O'Sullivan is awesome, he understood what I needed and respected me completely. He is the first one to actually take the steps that others have failed in for the last 12 years. He also respected my feelings about pain meds and got me treatment for my condition without opioids. I don't and won't ever see any other orthopedic doctor/surgeon. He is the best and so are the rest of the staff there.
April 05, 2025
Dr. Osullivan’s bed side manner. Very relatable.
April 03, 2025
Outstanding Physician
March 31, 2025
Tracy
March 14, 2025
Dr. O Sullivan and his staff are very welcoming, understanding and listen to your questions and very knowledgeable. Definitely a wonderful doctor's office experience, highly recommend
March 06, 2025
The staff at the office and the post-op staff at hospital were all outstanding
March 06, 2025
I am so thankful for my care from Dr. O’Sullivan and his team. I am a patient for life!
March 05, 2025
Glenn is a fantastic orthopedic surgeon and he went out of his way to help me, and give me a [ ]. Thank you so much!
March 05, 2025
Dr. O’Sullivan explained the [ ] and options for fixing it clearly to me, using the [ ]. He did so again before [ ]. He did a very good job as did the anesthesiologist, and the PA. I felt fortunate to be in such good hands,
March 01, 2025
I love that they added the taller chairs to the waiting room They are helpful with a [ ]. Glenn O’Sullivan is the best doctor I’ve ever had. He listens well to his patients and truly cares about them. He gives them plenty of time and honestly tries to find solutions. He has Done [ ] in the past and continues to give the best care.
March 01, 2025
I found Brian to be a lovely helpful person and I always look forward to seeing him when I have an appointment there. He’s always cheerful, helpful, friendly and professional. You get the sense that he cares about you. Doctor O’Sullivan was also very friendly and approachable. I feel very comfortable with him as my orthopedic surgeon.
February 19, 2025
Tracy - busy but always friendly and accommodating.
February 16, 2025
Dr. Osullivan
February 12, 2025
Everyone I encountered was exceptional.
February 12, 2025
Dr O’Sullivan and his team are some of the best I’ve ever visited for health care. Dr. O’Sullvan understand and is very compassionate and sincere with his deaire to get to the root of my issues. Highly recommendd
February 09, 2025
I was impressed how the doctor explained to me my resent [ ] and going over my prognosis right away. I liked that he reviewed the options I had available, and his great knowledge concerning my visit. I really appreciated his concern and kindness in prayer that helped ease stress and gave me more courage and wisdom. The staff were also so appreciative and kind. Everyone was so helpful. I am grateful I was referred to Dr. O’sullivan, if only the distance and long drive wasn’t so far away.
February 08, 2025
Everyone that I have come in contact with at [ ], and especially Susan have gone out of their way to assist me in any way that I needed.
February 05, 2025
Dr. O'Sullivan is the best at what he does.
February 02, 2025
Dr O’Sullivan is superior in his attentiveness and thoroughness in treating me.
February 01, 2025
O Sullivan
January 30, 2025
Dr O'Sullivan
January 29, 2025
I've felt welcome and cared for.
January 29, 2025
Both Dr O’Sullivan and Tracy are outstanding.
January 25, 2025
The male nurse (can’t remember his name) and the medical assistants in the back who found my missing test results
January 24, 2025
I received outstanding service from Dr Glen O'Sullivan and feel like I am finally in good hands since my previous specialist did not follow or track my care after [ ] had no suggestions to offer for my [ ]. Thank you, Dr. Sullivan, for the exceptional care + suggestions you have offered for future troubleshooting my [ ]. I am relieved already.
January 22, 2025
Dr. O Sullivan's knowledge and solving the problem efficiently.
January 22, 2025
I've always felt that Dr O'Sullivan was excellent in his interest in my care and his ability to convey what he had in mind for me. He always wanted the most information from [ ] etc to make the best decisions.
January 19, 2025
Brandon is always outstanding, Chris also and of course Dr O'Sullivan.
January 18, 2025
Tracy, Dr O’Sullivan’s assistant, listened sympathetically to my pain problems and helped me get a very prompt [ ] appointment.
January 15, 2025
Dr.Glen OSullivan is a wonderful person
January 15, 2025
O’SULLIVAN asked questions and listened.
January 15, 2025
Dr. Osullivan
January 11, 2025
Dr. O’Sullivan Jason [ ] (?) Courtney Tracy
January 08, 2025
Dr O’Sullivan and Tracy are excellent at listening and understanding the patient and their needs!
January 08, 2025
Dr. Osullivan's MA, Tracy is amazing. Everytime I a question she would respond back to me right away.
December 18, 2024
Dr O Sullivan (excellent Dr.) and Tracy his assistant is a employee Asante needs to recognize her excellent effort to help keep the wheels on the cart and appointments on schedule. Very important employee!!!
December 05, 2024
Dr O 'Sullivan was outstanding because he was my choice for a 2nd opinion and I immediately felt comfortable with him and he gave me answers I understood and a plan for my care.
December 04, 2024
Everyone involved in my care is outstanding.
November 16, 2024
I am so fortunate to have care from Dr. O’Sullivan and his team. I have zero complaints and all the admiration!
November 16, 2024
Receptionist always warm and welcoming and respond very quickly
November 13, 2024
Dr. OSULLIVAN AND STAFF
November 13, 2024
I wouldn’t change anything except 5 minutes is not enough time to have conversation with him.
November 13, 2024
Dr. Glen O'Sullivan is an exception to the rule. When it comes to surgeons, he actually takes a personal interest in your well being as well as your life. He actually cares.
November 06, 2024
Dr. O'Sullivan was always attentive to my needs, and always discussed the care options with me and my GP. He visited me regularly while I was in the Hospital. Later, he actually came to my home on numerous occasions while I was in a hospital bed at home for these care option discussions. He also telephoned me regularly to hear how I was doing. Now, after 4 months I am close to walking without my hiking pole, which I totally attribute to Dr. O'Sullivans excellent care.
November 06, 2024
Dr. Glen O'Sullivan
November 06, 2024
I didn't get names but everyone way great. Thank you.
November 06, 2024
I appreciate the time and attention the doctor gave me.
November 02, 2024
Asante Orthopedics Dr. Glen Sullivan, PA [ ] and team have been the best at looking out for my health while striving to support me in achieving my goal of improving my mobility back to being healthy again. .
October 30, 2024
Dr. O, Sullivan and his staff. Dr. O has the experience, skill set and knowledge that has been why he has been my only back surgeon since 2004. Simply Keep Him!!!!!
October 27, 2024
DR. O'Sullivan is the very best at what he does.
October 23, 2024
Brandon at the front desk at dr Osullivans office is an excellent worker who Asante should be grateful to have. Dr. O’Sullivan helped me get my [ ] 3 years ago and is probably the most caring doctor I’ve ever seen in my 51 years of living. He has always went above and beyond for me as a patient. This world could use more doctors like Glen O’Sullivan.
October 23, 2024
Really appreciated Dr. O’Sullivan listened to my concerns and explained options in a way that was easily understandable
October 23, 2024
This provider and his staff are highly professional and friendly when addressing and answering all questions.
October 23, 2024
As a new resident of Ashland I have been impressed with how kind, efficient and helpful healthcare people have been. Dr O’Sullivan and his staff have been outstanding.
October 17, 2024
Everyone in the office was kind, caring and concerned about my health.
October 16, 2024
Dr. [ ] is a wonderful doctor who doesn't just hand out pills, he finds the answers and Dr. O'Sullivan is awesome!!! Best orthopedic surgeons I have ever been to, he mentioned medication and I declined so without a missed beat he said that we will handle my [ ] and other issues in another way and he definitely helps without [ ] or jeopardizing my sobriety.
October 16, 2024
Dr. O’Sullivan is always excellent and his technical staff also. I can’t see enough positive things about them.
October 14, 2024
It's a definite team effort and it all works.
October 14, 2024
Dr. O'Sullivan is very helpful and positive
September 15, 2024
Dr O'Sullivan.
September 12, 2024
I think her name was Courtney she scheduled for Dr O'Sullivan, also Vicki who kept me informed by phone
September 12, 2024
Chris [ ], has always followed me with my concerns about my lower lumber region. I am very grateful for his care. He referred me over to Dr. O’Sullivan. I feel comfortable with the service I received on my first visit, the diagnosis and the plan we came up with to help with my [ ]. I did forget to bring my med list, and I would have liked to have a little more time to explain some other things. Dr. O’Sullivan was kind, and I look forward to being his patient.
September 11, 2024
Dr OSullivan is amazing!! He listens and genuinely wants to help. He obviously ares for people which is rare to find in doctors
September 11, 2024
Dr. O’Sullivan was a kick and made me smile so much. His bedside manner was excellent! He shared so much knowledge with me and ordered me [ ].
September 11, 2024
Dr. O'Sullivan is absolutely the best medical professional I have ever had. His professionalism, knowledge, compassion and understanding of my situation is top notch. I am very thankful for him and his staff.
September 11, 2024
After I left the hospital for home care, Dr. O'Sullivan called or met with me at least once a week to see how I was doing. He also stopped in often while I was hospitalized. He is a doctor who has genuine empathy, and concern for the recovery of his patients.
September 11, 2024
Provides excellent care and displays great respect
September 01, 2024
Dr O'Sullivan has an excellent bed side manner.
August 28, 2024
Dr O’Sullivan was outstanding. He helped work me in for my emergent situation and he took the time to explain everything and make sure I had a good understanding of what was going to happen and that I was ok with that. He also listened to me and what my concerns were. I could not have better praise than I do for Dr. O’Sullivan. I highly recommend him to anyone I know with [ ]!
August 25, 2024
Dr O’Sullivan went above and beyond to make sure he understood and how he treated me. He was kind and respectful. The office staff made some mistakes and the construction was inconvenient. Over all a great visit.
August 25, 2024
I wanna say his name was Chris?? He was a nurse that took down my information before seeing the doctor. He had silver hoop earrings.
August 22, 2024
Chris
August 10, 2024
Dr O'Sullivan took the time to address my pain concerns, and provided options to achieve relief. Thank you kind sir!
August 08, 2024
Tracy is always helpful! Professional and pleasant personality. She does a great job in a very busy medical office.
August 07, 2024
Dr. Glen O’Sullivan and his PA Jason and his assistant Courtney are the most amazing people I’ve ever had the pleasure of dealing with in this type of situation. If I ever had anything needed to be done that is in their field, I would only come to see them. I can not say enough great things about them! [ ]
August 07, 2024
Tracy , Jason & Dr. O’Sullivan are awesome ! My back feels so o much better ! Thank you for making my quality of life much better, YOU GUYS ROCK 🤙😁
August 04, 2024
Sam and Brandon
July 31, 2024
I've had countless doctors in my 66years and I feel blessed having found Dr O Sullivan. Always informed, always on top of things and extremely compassionate. He's the best!! My only regret is not finding him sooner!!
July 28, 2024
Dr. O’Sullivan and his assistant, Tracy.
July 24, 2024
Everything
July 24, 2024
Dr O Sullivan and nurse
July 20, 2024
Dr Osullivan always has a way of making procedures and expectations easier to understand at times decisions can be challenging to make due to long term consequences of such [ ]. That's important when I have to have someone help me in every day life activities.
July 20, 2024
Dr. O’Sullivan is the nicest, kindest ,person who actually understands and listens.
July 17, 2024
Yes [ ] was nice, professional and answered questions I had about the facility and the doctor. She followed up after I was seen to set me up to be referred to have a [ ] town Redding, Ca.
July 17, 2024
Love, love Dr. O'Sullivan! He's great
July 07, 2024
I have only been there once so far so I have little input at this time.
July 06, 2024
Dr O'Sullivan wanted an MRI asap & it happened. Whoever handled that did an excellent job
July 03, 2024
Dr O sullivan is excellent I've been a patient for many years and he always takes care of me. Listens and answers all of my questions.
June 27, 2024
Sam, she very courteous and returned my calls promptly. Amy and Brandon as well.
June 26, 2024
Dr. O'Sullivan, He is the best and Asante better keep him!!!
June 22, 2024
Brendan, Sam and Tanna in the front office have always gone above and beyond to help whenever I've had a question or concern.
June 22, 2024
Dr.O’Sullivan is the very best Doctor in the Rouge Valley!
June 21, 2024
Dr. O'Sullivan
June 19, 2024
Dr O Sullivan and all his stsff are very attentive. The pre op preparation were very good. Operation was effective and healing and physical therapy is going well. Nurses during my [ ] stay were excellent and do kind to me. I have never received such direct care for an [ ]. My hsesrt felt thank you
June 19, 2024
From looking at my [ ] Dr O’Sullivan was able to explain to me the [ ] that he would recommend to reduce my [ ]. His recommendation was less invasive than other orthopedic surgeons had recommended.
June 19, 2024
Dr. O is the best.! A truly caring physician, an expert is his field.
June 19, 2024
The [ ] care by Dr. [ ] and Chris was outstanding. Thank you!
June 17, 2024
Glen is very caring about my needs. His assistant is very helpful and explained about my need to see him well before date for [ ]. He was very knowledgeable about the [ ] and waited until the okay came to schedule my [ ]. I’m so glad I have him as my [ ]. He was also aware about the passing of my orthopedic surgeon that took care of carpal tunnel and agreed after [ ] to do [ ] on [ ].
June 12, 2024
Dr. O'Sullivan and his Staff are ALWAYS on top of things and professional in every aspect of my care. One of the only, or very few offices that actually seem to care.
June 12, 2024
Dr. O'Sullivan and his assistants are excellent medical professionals and helpful, caring people.
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