Mission Statement
and Values

At Cambridge Biotherapies, we are dedicated to improving the lives of people affected by mental illness.

We pursue this mission by:
  • Helping patients define and achieve recovery.
  • Providing the highest-quality, compassionate care in collaboration with our patients, their families when needed, and outside treaters.​
  • Practicing with integrity, compassion, and discretion.​
  • Using evidenced-based treatments, and staying fully up-to-date with emerging research.
  • Maintaining the highest ethical standards.​
  • Focusing on our patients’ needs first, and tailoring treatment to meet each individual’s needs.

Our goal is to stay true to our mission, conduct ourselves with unwavering integrity, and provide a safe, warm, and welcoming environment for our patients, their families, and our staff.


Daniel A. Brenner, M.D.
Medical Director

Emily Monich
Director of Operations

Olga Pavleyeva, R.N.
Head Nurse

Chrystin Comeau
Clinical Coordinator

Ned Almeida, R.N.
Infusion Nurse

Daniel T. Thompson
Managing Director

Al Aba

Albert Aba, F., R.N.
Infusion Nurse

Dana Colley

Dana Colley
Psychiatric Assistant

Kelsey King RN

Kelsey King, RN
Infusion Nurse

Katherine Marcinkus

Katherine Marcinkus
Infusion Nurse

Katie Monti

Katie Monti
Infusion Nurse

Ximena Sanchez-Samper, MD

Ximena Sanchez-Samper M.D. Staff Psychiatrist

Staff Bio

Sarah Wise


Dianne Sawtelle
11:43 27 May 21
After trying everything else for twenty years, and finding nothing worked, I found Cambridge Bio therapies. I have done both TMS and Ketamine infusion with very good results. There is hope here and it does get better. So if you are depressed or having PTSD, or both...you should try this.
Linda Morgan
00:29 17 May 21
There are no words to express the gratitude I feel for the help I received from Cambridge Biotherapies. After a long struggle with severe, refractory depression, I found relief after several Ketamine infusions. Cambridge Biotherapies is a warm and safe environment and has an outstanding, professional, discreet, empathic, understanding staff. Dr. Dan Brenner is a very warm and extremely intelligent psychiatrist who has the ability to quickly synthesize complex problems and is able to grasp your essence. I always feel comfortable talking to him; he is comforting and he is the world's best listener. He is also great at working with a team and with communicating promptly with other providers. Thank you to the entire team at Cambridge Biotherapies, I cannot recommend them enough for the treatment of depression.
CMM Client
23:26 12 May 21
I am so thankful that I found Cambridge Biotherapies. Each and every staff person here - from the first time you reach out throughout your clinical experiences - is caring, supportive, and informative. When I went for treatment, I felt safe and cared-for throughout. It is nice to feel like a person, not a patient.
Steve Sandles
00:05 07 May 21
What can I say...this place changed my life. Their dedicated & compassionate staff assisted me in breaking free from my depression that I've been dealing with my whole life. They follow the up-to-date science and work one-on-one with you to adapt & customize your treatment plan. I did both TMS & Ketamine and was responsive to both, but everyone is different. I would highly recommend anyone who has struggled with depression for a long time to schedule an initial appointment, this might just be the breakthrough you need when you've already tried everything else.
Malcolm Nelson
14:28 05 May 21
I can't recommend Cambridge Biotherapies highly enough. Everyone who works here is highly competent and a pleasure to interact with.
Ryan DiNatale
22:59 01 May 21
I’m set to begin the SAINT (Stanford) TMS Protocol and am super excited.I’ve had a video meeting with Dr. Brenner, who i thought was awesome and also very bright and friendly. Also CJ Comeau, who has helped my schedule appointments and answer all my questions is super nice and professional. The case worker (Sarah I believe) who interviewed me before I met with Dr. Brenner was also super friendly.So while I cannot speak to or provide any rating/review or comment as to how the SAINT TMS Protocol was for me, I can say all interactions with everyone at Cambridge Biotherapies has been awesome.Lastly, I just want to note how important the research and work that places like Cambridge Biotherapies are doing to advance mental health care. Ketamine, Theta Bursts, and TMS are in my opinion going to be part of the way of the future (perhaps with the addition of the novel use of other psychedelic compounds like Psilocybin, MDMA, LSD, etc once the building research can further establish their benefits for a variety of ailments).

Cambridge Biotherapies

TreatmentFor Patients and ProvidersAbout UsNews and ResearchContact Us
American Society of Ketamine Physicians, Psychotherapists & Practitioners

6 Bigelow St, Cambridge, MA. 02139
Phone: (617) 803-9722
Fax: (617) 945-7063