Comprehensive NYC Psychiatry and Therapy Services

I cannot express enough just how amazing Acheron Psychiatry is!I started out taking a KAP group with Alicia, which was very impactful. Everything I experienced in the group was very intentional- themes for the group to consider, the integration between dosing sessions, even the music chosen was well thought out. Alicia had presence that was encouraging and supporting.After the group, I started one on one therapy with Alicia, some sessions ketamine assisted, and others more similar to talk therapy. I have made many improvements with my C-PTSD and would recommend if anyone has a similar diagnosis to come for treatments here. Both ketamine assisted and regular talk therapy have really helped, whatever your comfort level is, they will receive it. Alicia is a very supportive therapist who remembers in detail what you talk about each week and always has a plan for how to help. I can’t recommend her highly enough.I also want to shout out Dr. Daniel Zimmerman who, similar to Alicia, I have found to be a very compassionate and professional practitioner who takes an active approach to treating patients.Emmy and Sydney are also amazing with helping to schedule, bill, and answer any questions. They have shown kindness each time I have come in.I’ve been at Acheron for a little over a year now, and if you are considering it, go for it!!And if you might be hesitant about ketamine assisted psychotherapy like I was when I started, please know you will be supported here. From finding the appropriate dose to being in a space that is safe and supported, Acheron has perfected the process to make your healing journey intentional and impactful.

I’ve been working with Acheron now for around half a year and feel very confident in saying that the psychiatry and counseling they offer is top notch. Dr. Zimmerman and his team approach their work with the utmost degree of professionalism, care, and sensitivity. My counselor, Ben Dameron, has been a huge help in my journey during this period, from practicing acceptance to implementing coping strategies, he’s been ever present and with me every step of the way. 10/10 would highly recommend Acheron’s services to those looking for a high quality mental health provider.

I want to thank everyone at Acheron for making me feel so much better. In the Intake, meeting Dan was terrific. After that the 4 therapy sessions with Amanda reached inside me to help with some serious issues that I have been dealing with for a long time. The 4 ketamine sessions with Amanda and Victoria helped me come to a place of peace within, accepting myself as I am. The Integration sessions made this even more intense. The staff is amazing in supporting me so well. I walk today with a feeling of HOPE that I haven’t had in a long time. Again, thank you all so much. I wish all people could have the benefits I have experienced in this world.

I had gone through one Keta treatment program and it was nice, pleasurable, but nothing tangable came out of it - Acheron (and especially Kathy) took that experience to new heights - it turns out that you CAN make breakthroughs in the mixture of Medicine +Therapy! Office is REALLY nice and comfy and the staff all go out of their way to make your needs met and that you're happy with the experience. A truly groundbreaking form of therapy!

I have been trying therapy for about twelve years now, I once lost hope because all the therapist that I went to does not help my mental health at all. But for some reason, Acheron did the job. With only five month my mental health is better than ever, with their help I even got out of depression, and finally got some relief and peace for the first time in my life. I recommend Kathy Dowd, she is a great listener with so much care and love, who truly makes me feel safe to reveal my traumas. She is the only therapist I met in the past twelve years who makes me feel like she actually understands me and cares about me.

Acheron Psychiatry is a wonderful deeply collaborative team committed to ketamine assisted psychotherapy. It’s evident that they communicate closely with one another and approach care thoughtfully and intentionally. They are highly responsive when it comes to coordinating care, which makes the entire process feel seamless and supportive. Their services are innovative and integrate cutting-edge treatment with meaningful clinical depth. I highly recommend their services to anyone seeking KAP therapy.

Acheron is exceptional in every way professional, efficient, and genuinely committed to helping their clients. The entire team is knowledgeable, supportive, and easy to work with, making the process smooth from start to finish.A special mention goes to Emmie, who is truly phenomenal. She is incredibly helpful, pleasant to deal with, and always goes above and beyond to ensure everything is taken care of. Her attention to detail, responsiveness, and warm demeanor make working with the team an absolute pleasure.If you’re looking for a therapy provider that combines expertise with outstanding customer care, this is the place to go.

Dr. Daniel Zimmerman is a highly skilled psychiatrist who approaches his work with empathy, curiosity, and a commitment to evidence-based care. His thoughtful integration of ketamine-assisted psychotherapy reflects both clinical expertise and genuine dedication to helping clients find new pathways to healing.

Fantastic team! Beautiful space! I attended an art workshop here in March 2025. I was impressed by the care and conscientiousness they showed every step of the way -- from booking, to waivers, to day-of logistics. All around, a very safe and nurturing container in which to explore self and relationships ????

Godsend. Especially with Heather and her speciality with chronic pain....very thoughtful and they have their finger on the pulse of innovation in the mental health space. They do fantastic work....from Aroj and Madisun to Dr. Z and some of their specialist healers. You won't ever regret taking care of your health with these folks.

I go to Acheron for Ketamine Assisted Psychotherapy (KAP) as well as medication management. I don’t think they do medication management on its own, because they try to provide holistic mental healthcare, offering individual therapy, group therapy, retreats, & other services.I’ve tried sound therapy, which was helpful, but mostly worked with Dr. Zimmerman for KAP. He’s been a great psychiatrist. I’d say he ties for the top spot in a long list of psychiatrists I’ve either seen as a patient or worked with as a social worker across 5 states over the past 2+ decades. He’s quick with responding to medication refill requests, which I appreciate. Also, he’s helped me explore numerous issues more deeply & from different perspectives than I’ve done in the past.Most importantly, though, he really helps me feel in control of my mental health. When deciding what issues to focus on, what treatments/interventions to try, & other aspects of care, he makes sure that I’m leading the effort while providing his expert guidance. I feel respected & empowered by the way he engages.Plus, the admin staff have been easy to work with as far as managing insurance coverage, copays, scheduling, etc. Madisun has been especially considerate & helpful the entire time I’ve been their patient.I’ve been a patient at Acheron for over a year now, & am very happy with my experience. I plan to continue using their services as long as I live in the area.

This place has changed my life. Dr. Zimmerman is a knowledgeable psychiatrist and Danielle is an incredibly warm and understanding therapist. I’ve learned so much about myself here through medicine and therapy. I would encourage anybody who wants to heal and grow to come here

I was skeptical about coming here, but this is a very warm and comfortable environment. Staff is nice and professional. I really feel like they want to help you.

I’ve been going to Acheron Psychiatry for 2 years now and I can confidently say that they have been a lifesaver for my mental health. All of those I’ve interacted with have been pleasant, accommodating, prompt and helpful. I’ve done Ketamine Assisted Therapy (KAP) and it has changed my life for the better. My whole life view was shifted and set me up for a better life as a result. I highly recommend Dr. Zimmerman and his practice.

Cannot recommend the care I received at Acheron Psychiatry more. Dr. Zimmerman took the time to really listen to my issues and offer a range of options for me. He was open to my more holistic health views, unlike other doctors I have seen in the past. I also have loved working with the firm’s therapy staff.

I am so grateful to Dr. Zimmerman, Darcy, and all the folks at Acheron. They are caring, insightful, and understanding. They make mental healing a wonderful, holistic experience. It has made a positive and lasting impact on my well-being. Aroj is a wonderful medical assistant. Amanda, Madisun, and Emmie have been top notch on the administrative side. Thank you Acheron!

i like the professionals here a lot and they have helped me a lot on my mental health journey so far!! highly recommend

Fantastic practice with multiple therapy modalities including psychodynamic, group, sound, and ketamine assisted therapy. I was at first skeptical of sound therapy but it’s been incredibly beneficial for me. Every single staff member I’ve interacted with has been warm, compassionate, skilled, and genuinely concerned for my wellbeing. Wonderfully supportive place to start healing, whatever your psychiatric needs.

Heather Hamilton at Acheron Psychiatry is a caring and knowledgeable therapist , a great communicator with excellent social skills and a natural ability to help someone cope with emotional issues . She possesses great insight and empathy which is very important for a therapist . I am very fortunate to call her my therapist for the last year.

Dr. Zimmerman is one of the best psychiatrists in NYC. I mean it. He immediately makes you feel at ease and he truly listens. His bedside manner is wonderful, which is not always easy to find in this day and age. He is also skillful and attentive when it comes to medication management. To find a psychiatrist that was in my network (Cigna) who is both an excellent therapist and a competent prescriber was a true miracle. I feel cared for now, and that is a huge relief for me. Just go and see for yourself. You won't find a better psychiatrist.