In May 2025, my scooter was struck by a car and I took a hard fall on the road. Luckily, I was wearing a helmet (please do - geeze people, be safe!), but I unfortunately sprained both of my ankles and struck my palm on the ground. It was pretty bad! I started my sessions with Mari in late June, and she a great job of assessing my movement and pain points. She set me up with a really achievable regimen of exercises and self-massage, and after a few weeks my hand and neck are already significantly better! The ankles are a bit more complex, but there is improvement, and Mari has really well of talking things over with me to make adjustments to prevent pain and strengthen in the right places. In our most recent session, she also used Graston technique (tissue scraping with tools) on the various tendons around my ankles, and I was amazed by how it brought relief that was significant, immediate, and lasting. Total wizardry!! Overall, I've loved working with Mari and appreciate her kindness and willingness to adjust her approach, and also talking over payment with me. It's great that she's in such a walkable spot near where I live in Maple Leaf! read more

I can't say enough good things about Mari O'Neill. My physical therapy journey began with a different therapist, who after just three sessions, told me that surgery was my only option to get to the point I wanted with my rotator cuff tears. Determined to avoid surgery, I sought out Mari and it's the best decision I could have made. She's been a game changer for me. With her expertise and unwavering support, I've made remarkable progress. She created a tailored plan that not only alleviated my pain but also restored my full range of motion. Her comprehensive approach and genuine care for my overall well-being made all the difference. As I completed my treatment this week, I feel a mix of joy and sadness because I will truly miss our sessions. If you have the chance to work with her, you are truly fortunate. Thank you, Mari, for your amazing support and for helping me reclaim my life! read more

Mari has a gentle reassuring manner that helped me relax and feel confident that she would be able to help me improve physically. You can tell she has plenty of experience and knowledge to back her up. We came up with a plan and she followed through with great communication to help keep me on track. read more

Mari is exceptionally good at her job. She is able to find the perfect exercises to help with your physical issues. Both my wife and I have used her service. read more

Mari is excellent. I've been to PT before but Mari is by far the best PT I've had. She takes a lot of time to understand the issue. She is highly professional and understands the body in a way that makes me feel Like she's really taking care of me. read more

I've seen Mari for various injuries/ailments over the years, but I have spent the last 7 months visiting her after breaking my leg. Mari is an angel, she is so sweet and personable, and really takes the time to listen to what's going on with your body. She is super knowledgeable, and uses such a range of modalities and treatments to help you meet your recovery goals. Scheduling with her is super easy online, and the app that she uses to send you home exercises is super helpful. If you find yourself needing PT, look no further than Mari! read more

Mari was recommended to my by a sports medicine doctor. I had two issues: a disc bulge in my lower back and rotator cuff tears in my right shoulder. Mari is super good at targeting the exact locations of my symptoms and then helping me to learn the exercises which contribute to experiencing them less. I didn't know what "core work" was until I started seeing Mari. She taught me a lot about how to maximize my exercises, using precise body positioning and breath, to get the most benefit from them. Thanks to Mari, I have established a daily exercise routine which helps me to remain active even with a disc bulge and rotator cuff tears. Go see her! read more

Mari is an exceptional PT. She quickly understands root cause and how to have maximum impact on recovery. She knows active people want to stay that way and gives highly attentive, personalized care to make sure you do! My college athlete son and I have both benefited from her top notch care. I've recommended her to many friends over the years, who all agree, she's truly the best! read more

Mari is the best. Her therapy involves a spot-on blend of physiological analysis and psychological coaching. I have never felt better. Smart, compassionate, professional PT is what you'll find here! read more

I highly recommend Thrive Physical Therapy. Mari did a great job listening to my concerns and developing a highly effective treatment plan.

Mari is an excellent therapist. She listened to my clinical symptoms, did a thorough assessment and was very helpful in providing exercises to address the issue. She is great at explaining and demonstrating the exercises and overall just a wonderful experience. I saw her for a few months and always felt the time was very well spent. I would highly recommend her. read more

Yelp says five stars means "Woohoo! As good as it gets!" While I haven't been to every physical therapy place in Seattle, I am confident that Mari at Thrive is indeed as good as it gets. I'll make a long story short: Severe back and left leg pain. Mari took a lot of time to talk to me at our first visit and I think she correctly diagnosed the issue, which was not what I was initially thinking it was. She has a technique that decompresses the spine, and she gave me some exercises to do at home to relieve the pressure on my sciatic nerve, and within a couple of weeks almost all the pain was gone. Now we are working to rebuild the muscles and strength in the affected leg. I can walk! I can do garden work! It's like I've been released from a jail of pain. Depending on what your problem is, you may not have the same results as I did. That being said, I suggest you give Mari a chance BEFORE you start with the MRI's, X-rays, and visits to other medical specialists. Thrive's office is very pleasant, and parking is usually to be found right in front of their door. read more

Mari is knowledgeable, kind and experienced. I am so glad I found her and in my neighborhood, too!

Mari has been hugely helpful with my thoracic outlet syndrome. I'd been having symptoms for about nine months. After a couple of months or so working with Mari, it went from chronic pain to just the occasional hint of discomfort, and thanks to Mari I have tools to help stop it from progressing. Thank you, Mari. read more

Mari is amazing. I've had multiple physical therapists due to sports injuries over the years and Mari is the best. She has such a deep knowledge of human anatomy and works with you on putting a comprehensive plan to help you achieve your goals/recovery. I continue to go back to her for even the smallest of tweaks and she always gives 100% energy, kindness and focus. Highly recommend! read more

Mari is an absolutely wonderful physical therapist. If you have a problem you think might benefit from physical therapy, do yourself an enormous favor and go see Mari. I went to her for plantar fascitis and she completely cured it. It has now been 3 months since I stopped seeing her and I can be very active and have no pain. I just started a dance class which I have wanted to do for some time, but postponed because of my pain. She also helped with some other problems as long as I was there. I am actually pretty skeptical about physical therapists. I have been to many. I have had a lot of problems with my back and with plantar fasciitis in the past. I know how persistent it can be. So I know Mari is in a different class. I really appreciate her open-mindedness. If you have other exercises, devices, or practices that are helping you, Mari is happy to know about them. I have encountered numerous therapists who think their method is the one true way. With Mari, ego is not an issue; she just very sincerely wants you to get well. She is trained in using Pilates with PT, so if you are a Pilates devotee, as I am, that is a big asset. Lastly, she has a very empathetic bedside manner and makes you feel very comfortable. read more

I killed my back cross country skiing for the first time and then doing some lazy weight lifting. I was freaking out and so relieved when Mari called me back and moved some things around to get me in right away. She was great. Super-profesional and knowledgeable. One session made a huge impact. She has a reasonable discounted cash price too for folks like me who don't have good medical insurance. I couldn't have been more comfortable and happy with my experience. Thanks Mari read more

I discovered Mari through a friend (who is also a PT and loves Mari). She helped me so much, and now she is helping my daughter too--after only a few weeks, my daughter is noticing major improvement (thanks to Mari's guidance and exercises). Mari is patient, smart, encouraging, and has a great bedside manner. I cannot recommend Mari highly enough. read more

I first went to Thrive following a recommendation from a friend. He had previously been there for a neck problem and could not say enough good things about Mari, so I took his advice and made an appointment. I needed someone who knew their stuff, a true professional who would listen to me, evaluate me, and help me get back on my feet. I found that at Thrive. I could barely walk when I went in. I had severe pain in my lower back from a pinched nerve and I had also pulled a muscle in my pelvis playing soccer. Things were not good. Mari quickly put me at ease with her knowledge and expertise and proceeded to provide the best care I have ever received from a health care professional. Read that again. Seriously. She listened, looked, asked questions, and implemented a plan to get me back on the road to recovery. The treatment and guidance I receive from Mari have been key components in my recovery and have me feeling much better. If you need a physical therapist, and have never been to Thrive, I highly recommend you do so. read more

Mari is awesome. I followed her from greenwood PT because she is just that good. She always works with my crazy scheduling requests and goes above and beyond to make sure in getting the therapy I need to get better. I have been to 3-4 different therapists over the years and I will never go anywhere else again. read more

I cannot overemphasize how effective and amazing Mari is at what she does. She is not only incredibly intelligent and skilled, but kind and welcoming. I am an athlete and a coach, so being injured and unable to exercise not only takes away from my happiness, but from my ability to work. Mari has never wasted my time or money, and has always accelerated my healing so that I can get back to what I love TEN TIMES sooner than I would be able to on my own. Not only does she help my body fully recover, but she "re-teaches" it to work the way it's supposed to, so the likelihood of injuring that same spot again DRASTICALLY goes down. I enjoy working with Mari so much that I actually look forward to my physical therapy sessions throughout the week. You will never regret going to see her! read more

In my late 50's I decided to take on running. After completing a 1/2 marathon I experienced pain in my left knee. I truly thought that the running might be over. The great joy I experienced running seemed not to be sustainable. A recommendation sent me to visit Mari and quickly I realized I had someone who listened and was a partner to my goals. Many visits built upon each other until I am back to running again. I know what I have to do and I have a health coach I can rely on to help me when I stumble along the way. Mari got me back and she will get you there. read more

I've been bicycle racing locally for a number of years, when last season I started getting some significant chronic hamstring pain. I knew I was severely lacking in core strength and being taller than 6 feet, I have posture problems, which now seemed to be catching up to me. I started seeing Mari about once a week for strength training, manual manipulation and graston massage. During the sessions she also helped me fully understand how to do each move correctly (which is not always as easy as it sounds), but also helped me understand the importance of muscle activation rather than focus on pure muscle strength). Mari also helped me plan a few workout sets that I now regularly do at home. There were a few times where I went into a scheduled session with a different issue (neck pain or pain in my back) and she immediately went to work on it. In the past these kinds of issues would have lingered for days or weeks. I'm now walking taller, I'm stronger than I have ever been, and I have had my most successful season yet landing on the top of the podium in half my races this year! Suffice to say that without Mari's help I wouldn't be where I am today. Please support this local PT rockstar! read more

I had some severe neck issues which were also causing migraine headaches. This was impacting my everyday life. I was managing my issues with medication and just getting by. My doctor finally convinced me to go to physical therapy. That is how I met Mari from Thrive Physical Therapy. After a few months of thorough sessions I felt a huge amount of relief. It has been several months now and I am completely pain/headache free. Mari was instrumental in assisting me with my goal. Mari is very passionate about her business, empathetic, kind, knowledgeable and ensured I fully understood the entire process. I cannot thank her enough on how much she impacted my life and well being! I give her a full 5 start review! read more

If you're looking for a physical therapist, look no further. Mari is the best. I've been suffering from lower back pain for seven to eight year now and recently developed tendonitis in both my elbow and shoulder. Needless to say I was feeling chronic pain almost always. Mari took great care to gather all the information she could that led to an accurate diagnosis. Over just six sessions she taught me what the nature of my ailments are and why they developed in the first place, and exercises and stretches to cure me of these ailments. I've gone weeks now without thinking about my back and I played golf the other day virtually pain free. What a relief from chronic pain it has been ever since I chose to let Mari do what she does best, Heal people. If your in chronic pain go see Mari, it will be one of the best decisions you can make. read more

I was hit by a car on my bike and was left with some moderate to severe pain as well as some displacement in my hips. I was seeing a chiropractor for some time and was only getting temporary pain relief and the displacement in my hips was becoming more extreme. This chiropractor "graduated" me without even giving me a final "once-over" in which she would have noticed my hips being more displaced to the point I was bobbing up and down almost 2 inches difference every time I walked (I think she knew she had messed up and was scared to address it and decided to let me go). I was so upset and honestly very discouraged by the way I was treated that when I was referred to Mari @ Thrive I was hesitant to even see anybody again. Mari was so kind and comforting and assured me that she would take care of me and address all my concerns. My fists appointment with her was so thorough and in depth that she pointed out problems I wasn't even aware of. Unlike the chiropractor I was seeing who only actually saw me for 5 minutes per appointment, Mari spends a whole hour with me every appointment and I always leave feeling confident that my body has improved and i always have something new to work on at home. I am blown away that after just a few visits with Mari I am close to pain free and I walk without a 'bob' now! Mari has set the bar very high for healthcare providers and I sing her praises every opportunity I get. If you are in pain.... Go see Mari.... She will treat you like family. read more

For over three years I tried different modalities for my severe chronic back pain - acupuncture, massage, chiropractic, and other physical therapists - and nothing helped. I went to consult with a spine specialist to ask him about steroid shots and possibly surgery. He told me to go see Mari at Thrive Physical Therapy, and I am incredibly grateful I did. I have a fully-functioning body again! She is brilliant. Go get the help you need from this physical therapist! read more

I started visiting Mari because I was suffering from sciatica brought on by years of sitting in front of a computer the whole day and not understanding how to undo the damage. She was highly recommended by my doctor. Mari is awesome! She's very personable, and she has been able to work with me to fix the damage and rehabilitate/strengthen parts of my body so the pain does not come back again. Very importantly, she can explain what is happening and what she is doing in a way that I can understand so I know what to look out for and how to maintain my progress between sessions. Through working with her, I've realized that I've adopted various physical habits throughout my lifetime that have contributed to my pain, and she has done a great job helping me to understand how to correct these habits. read more