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Quest Ketamine Clinics, based in Issaquah, specializes in ketamine therapy for treatment-resistant depression, anxiety, chronic pain, and related conditions. The clinic offers individualized ketamine protocols administered in a clinical setting, alongside NAD+ infusion therapy to support cellular function and energy metabolism. Treatment plans are tailored to each patient's presentation and response, with ongoing monitoring throughout the course of care. The practice positions ketamine within an evidence-based framework for patients who have not responded adequately to conventional pharmaceutical or psychological interventions, and coordinates with referring providers to ensure integrated care. NAD+ therapy may be sequenced alongside ketamine protocols as an adjunctive supportive measure.
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4.9
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I came to Quest Ketamine Therapies in search of healing. After several years of complex trauma, I felt at a loss. I didn’t know how to unpack the complexity of my hurt. The support I received from Mitch and Hayley was life changing! They’ve perfected the combination of clinical and comfort. I felt seen, supported and cared for. Countless people have shared with me that they noticed a fundamental shift in me after my initial treatments. I trust them and their practice whole heartedly.
Ops · Published March 4, 2026
I am very grateful to have discovered Quest Ketamine Therapies! This place has undeniably changed the course of my life for the better! From the moment I stepped foot into their facility, Mitch and Haley greeted me with warmth, compassion, and a genuine desire to help me improve my life. I felt safe for the first time in a long time and comfortable throughout my treatment journey.
The treatment rooms are well thought out, creating a calming and peaceful environment, where I could unwind and focus on my healing process. The clinic's commitment to patient comfort was remarkable, with amenities such as several types of comfortable blankets, heated blankets, weighted blankets, soothing music, and incredible artwork. I even brought my dog with me! Everyone was so accommodating and I felt like I was home.
The transformative effects of ketamine therapy cannot be understated. After my treatments, my mind felt less cloudy and a sense of clarity occurred. I feel my decision making has improved, and will power increased, which has been very beneficial for me in this stage of my life.
I first received a couple infusions from another clinic in the area, but felt rushed and I wasn’t able to fully engage in the experience. Quest stands a head and shoulders above. What sets this clinic apart is the genuine care and support they provide alongside the treatment, and I never felt rushed out after the infusion ended. Mitch and Hayley took the time to understand my concerns, patiently answered all of my questions, and consistently offered guidance and encouragement.
I cannot emphasize enough the positive impact this has had on my life. It has given me a newfound lease on life, allowing me to regain control of my mental health and find joy in everyday experiences. I am grateful for the exceptional care I received, and I wholeheartedly recommend it to anyone seeking a life-changing solution for their mental health struggles!
Jessica Peterman · Published March 25, 2024
If I could rate this place 10 stars I would. Mitch and Hayley are literally the best people. They genuinely care about their patients and want to help them. They helped me so much. I had so much going on that didn’t respond to any other treatment before coming here including pretty bad ptsd and bpd. Now, I am feeling the best I have in over 4 years. I highly recommend this place if your thinking of doing ketamine or any other service they offer:)
Imported sample only, not all Google reviews. Review publication dates are not check dates.
OpsPublished March 4, 2026
I came to Quest Ketamine Therapies in search of healing. After several years of complex trauma, I felt at a loss. I didn’t know how to unpack the complexity of my hurt. The support I received from Mitch and Hayley was life changing! They’ve perfected the combination of clinical and comfort. I felt seen, supported and cared for. Countless people have shared with me that they noticed a fundamental shift in me after my initial treatments. I trust them and their practice whole heartedly.
Jessica PetermanPublished March 25, 2024
I am very grateful to have discovered Quest Ketamine Therapies! This place has undeniably changed the course of my life for the better! From the moment I stepped foot into their facility, Mitch and Haley greeted me with warmth, compassion, and a genuine desire to help me improve my life. I felt safe for the first time in a long time and comfortable throughout my treatment journey.
The treatment rooms are well thought out, creating a calming and peaceful environment, where I could unwind and focus on my healing process. The clinic's commitment to patient comfort was remarkable, with amenities such as several types of comfortable blankets, heated blankets, weighted blankets, soothing music, and incredible artwork. I even brought my dog with me! Everyone was so accommodating and I felt like I was home.
The transformative effects of ketamine therapy cannot be understated. After my treatments, my mind felt less cloudy and a sense of clarity occurred. I feel my decision making has improved, and will power increased, which has been very beneficial for me in this stage of my life.
I first received a couple infusions from another clinic in the area, but felt rushed and I wasn’t able to fully engage in the experience. Quest stands a head and shoulders above. What sets this clinic apart is the genuine care and support they provide alongside the treatment, and I never felt rushed out after the infusion ended. Mitch and Hayley took the time to understand my concerns, patiently answered all of my questions, and consistently offered guidance and encouragement.
I cannot emphasize enough the positive impact this has had on my life. It has given me a newfound lease on life, allowing me to regain control of my mental health and find joy in everyday experiences. I am grateful for the exceptional care I received, and I wholeheartedly recommend it to anyone seeking a life-changing solution for their mental health struggles!
Ashlyee blochPublished December 19, 2025
If I could rate this place 10 stars I would. Mitch and Hayley are literally the best people. They genuinely care about their patients and want to help them. They helped me so much. I had so much going on that didn’t respond to any other treatment before coming here including pretty bad ptsd and bpd. Now, I am feeling the best I have in over 4 years. I highly recommend this place if your thinking of doing ketamine or any other service they offer:)
Chloe HynesPublished August 18, 2025
I can’t speak highly enough of my experience at Quest Ketamine Therapies. From the moment I walked in, I felt supported, respected, and genuinely cared for. Mitch and Hayley were absolutely wonderful — compassionate, attentive, and incredibly knowledgeable. They made my treatment feel safe, personalized, and truly healing.
The experience was transformative, and I’m so grateful for the care I received. I would wholeheartedly recommend Quest to anyone exploring this path. 10/10
K BPublished May 5, 2025
This clinic is absolutely life changing! The clinic staff, Mitch and Hayley are two of the kindness, most compassionate individuals I have ever had the pleasure of working with. I had similar treatments done at another clinic, and the result was not great. I am so glad I decided to contact this clinic and give Ketamine therapy another chance! Definitely, 100%, give them a call to see if this therapy will work for you!
Oh, and the office is beautiful, calm and relaxing, they use top of the line monitoring equipment for your entire treatment and have the option to add other medications to make the treatment pleasant.