Comprehensive NYC Psychiatry and Therapy Services
We're not just treating symptoms, we're healing minds
Our Services
Acheron is a Manhattan-based group practice providing individual, couples, and group therapy, neuropsychological assessment and cognitive remediation, and psychiatrist-led ketamine-assisted psychotherapy (KAP), including preparation and integration psychotherapy.
Untangle patterns, ease anxiety and depression, and rediscover meaning in life.
Improve mental well-being and start your healing journey.
Identify and treat ADHD, brain fog, memory problems, and other cognitive issues.
What’s New
OUR VISION
We believe that you deserve more than “merely coping.”
WE OFFER
Ketamine-assisted psychotherapy, neurocognitive care, medication management, and psychotherapy.
What Our Patients Say
“A weight was lifted, a door was opened.”
J.L., Tech Executive & Father – Ketamine Therapy Patient
"I feel my brain was rewired, my thoughts are clearer, I have more insight."
K.F., Environmental Health Professional – Ketamine Therapy Patient
"I was impressed by the care and conscientiousness they showed every step of the way"
D.M., Mindful Art Event Attendee
"Dr. Zimmerman took the time to really listen to my issues and offer a range of options for me."
A.V., Ketamine Therapy Patient
"They have their finger on the pulse of innovation in the mental health space."
M.M., Chronic Pain Patient
"This place has changed my life... I've learned so much about myself here."
C.B., Therapy 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."
J.M., Ketamine Therapy Patient
"My whole life view was shifted and set me up for a better life as a result."
A.L., Ketamine Therapy Patient
"They make mental healing a wonderful, holistic experience."
L.K., Therapy Patient
"I was skeptical about coming here, but this is a very warm and comfortable environment. I really feel like they want to help you."
A.T., Therapy Patient
"Every single staff member I've interacted with has been warm, compassionate, skilled, and genuinely concerned for my wellbeing."
S.M., Psychiatric Patient
"I like the professionals here a lot and they have helped me a lot on my mental health journey."
Y.R., Therapy Patient
"I feel cared for now, and that is a huge relief for me. Just go and see for yourself."
M.S., Ketamine Therapy Patient
"Great practice with helpful doctors that address the problem as a whole."
K.W., Therapy Patient
"Best in the city"
J.S., Ketamine Therapy Patient
Meet the Team
Daniel Zimmerman, M.D.
Amanda Sacks-Zimmerman, Ph.D., ABPP-CN
Taylor Armstrong, Ph.D., ABPP-CN
Adam Popp, PMHNP-BC
Alessandra Licul, LMHC
Danielle Andreotta, LMFT
Heather Hamilton, LMHC
Alicia Martin, LMSW
Darcy Montana, MHC-LP
Kathy Ehrich Dowd, LMSW
Ben Dameron, LMSW
Sara Meltzer, LMHC
Emmie Mullarky
Sydney Loera
Abigail Thornton
For Professionals
Acheron offers a wide variety of events, information, training, and support for our colleagues. We’d love to get to know you. Find out more about our offerings.

