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Green Lake Orthodontics is a boutique Seattle orthodontic practice offering treatment for patients of all ages, from traditional braces to Invisalign to lingual braces.

About Green Lake Orthodontics
Invisalign is the treatment reviews mention most, including cases involving TMJ pain and complex bite corrections handled by Dr. Sara Cassidy.
Reviews at Green Lake Orthodontics return often to Invisalign, including cases where it was used to correct relapsed bites and resolve long-standing TMJ pain, and to custom retainers for complex situations. Several patients transferring mid-treatment from other offices describe the transition going smoothly. The office itself gets specific mentions too, described as bright and overlooking Green Lake with a modern, high-tech feel. Dr. Sara Cassidy is credited with taking on complex or unusual cases and spending unhurried time with patients, though one review describes feeling pressured toward Invisalign.
Summary of 51 patient reviews, March 2013–July 2026, updated September 2026
Green Lake Orthodontics is a boutique Seattle orthodontic practice offering treatment for patients of all ages, from traditional braces to Invisalign to lingual braces.
Led by Dr. Sara Cassidy, an Invisalign VIP Diamond Plus provider, the practice emphasizes advanced technology including 3D digital scanning and low-radiation x-rays.
Treatments offered
Who They Treat
Green Lake Orthodontics provides orthodontic treatment for the following age groups:
Technology & Equipment
Green Lake Orthodontics uses modern orthodontic technology to deliver precise, comfortable treatment.
Orthodontists at this office
Dr. Sara Cassidy, DDS
NPI verified · no bio or photo on file
Insurance accepted
2 plans listedWhat patients say
Latest review 3 months ago
What patients praise
Who it suits
Doctors patients mention
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| Theme | Praise | Criticism |
|---|---|---|
| Friendly staff | 23 | 0 |
| The orthodontist | 19 | 1 |
| Gentle, comfortable care | 10 | 0 |
| Treatment results | 10 | 0 |
| Office & technology | 9 | 0 |
| Great with kids | 8 | 0 |
| Clear explanations | 7 | 0 |
| Scheduling & wait times | 6 | 1 |
Recent reviews from Google
Dr. Cassidy and her team are outstanding. I wouldn’t hesitate one bit if you’re looking for orthodontist care. In addition to their outstanding personalized care, integrity, and honesty, Dr. Cassidy and her team are genuinely kind, warm, friendly, and make you feel welcome, valuable, seen, the moment you walk into the office. My son has been a client for several years starting with his first consult and then Invisalign journey. Dr. Cassidy and her team have been amazing and communicative every step of the way, and at this point, feel like family. I also have to note their office is gorgeous, bright white and full of light, glass windows throughout overlooking Green Lake, extra comfortable, and it feels like sunshine the moment you walk in. As do the staff. We met with three different orthodontists and so happy we chose Dr. Cassidy. She stood out immediately and it’s become even more evident why. She is such a delight, deeply involved in your care, and always available. I can’t praise Dr. Cassidy and her team enough. They are a solid 10+.
For those looking to pursue orthodontic treatment in the Greater Seattle Area, look no further than Green Lake Orthodontics. Dr. Cassidy and her entire team (special shoutout to Alyssa and Jaryn!) offer the perfect blend of empathy and professionalism in a medical setting. I had a unique orthodontic case and felt incredibly well taken care of throughout the duration of my treatment. Dr. Cassidy is genuinely invested in the wellbeing of her patients, which is evident from the initial consultation. I greatly admire how my interactions with Dr. Cassidy never felt rushed, and I loved observing her take equal time with other patients. Most notably, Dr. Cassidy went the extra mile for me to have perfectly-crafted permanent upper and lower retainers, which many orthodontists simply declined to even consider. I'm very happy how my treatment plan was executed both ethically and compassionately. I'm forever grateful for Dr. Cassidy's care and strongly recommend her practice. Thank you so much, Dr. Cassidy and team!
Greenlake Orthodontics was outstanding from start to finish. The team was highly skilled, kind, professional, and consistently made me feel comfortable before and during the entire process. Every step was clearly explained, expectations were set well, and everything proceeded in a calm, low-drama way that I really appreciated. What stood out most was their quiet excellence — they simply do things really well without unnecessary fuss. Scheduling, communication, and logistics were all smooth and easy. The whole experience felt thoughtful, organized, and reassuring. Easy to recommend.
Dr. Cassidy is easily the best orthodontist I've ever worked with (I've worked with a few over the years). My kiddo is getting close to finishing their treatment. Dr. Cassidy is great with kids and parents/caregivers, has high standards for how she wants her clients' teeth to look, has a ton of patience, is professional but easy to work with, and her staff are excellent. I highly recommend GLO with zero reservations. You will be glad you chose GLO.
My daughter received Invisalign treatment from GLO years ago. Recently her retainer cracked so we needed to order another. The staff was still so friendly and helpful. They ordered the new retainer and shipped it out to my daughter in Chicago. The whole process was quick and seamless. It reminded me how much we loved working with them back in the day. I consistently recommend GLO to anyone needing orthodontics. They are fantastic to work with.
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