Revolutionary Mental Health Care in Massachusetts
Help your patients find relief fast.
Short-Term Availability
Collaborative Approach
Insurance Accepted
When your patients feel stuck, and their mental health progress stalls, it often comes down to challenges like:
- Conventional treatments not providing relief
- A lack of clear next steps
- Long waits for advanced mental health services
- Limited insurance acceptance at advanced treatment centers
The good news? We’re here help.
Why Choose Cambridge Biotherapies for Your Patients?
- At Cambridge Biotherapies, we know that as a provider you want to feel empowered when it comes to helping your patients heal.
- In order to do that, you need an experienced partner to collaborate with who can help you navigate alternative treatment options.
- The problem is traditional mental health treatments are often inadequate which makes you and your patient feel powerless and frustrated.
- We believe you should have access to the most effective, evidence-based and leading-edge mental health treatments.
- We understand how hard it is because for over 6 years we’ve collaborated with hundreds of providers to help them access treatments that work when nothing else has.
- With your help, we’re on a mission to provide revolutionary mental health care.
- Refer now, so you and your patient can stop feeling like you’ve run out of options, and instead discover a newfound sense of hope and optimism.
Don’t Take Our Word For It
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“As a psychologist and psychoanalyst, I’m so grateful to be able to rely on and collaborate with the clinicians at Cambridge Biotherapies in cases in which the interventions they provide can make such an extraordinary difference in patients’ lives.”
– Sarah Schoen, Ph.D.
Our Providers
Daniel A. Brenner, M.D.
Medical Director, CEO
Olga Pavleyeva, P.M.H.N.P
Nurse Practitioner and Infusion Nurse
Odessa Holt, MSW
Ketamine-assisted Psychotherapist and Psychotherapy Program Lead
Marielle Abell, PA-C
Nicole Chaitman, AGNP-C, PMHNP-BC
Alexandra K. Ellis, PA-C, MPAS, CPT, RYT-200
Daniel A. Brenner, M.D.
Medical Director, CEO
Dr. Brenner is a board-certified Psychiatrist and adult psychologist, serving as the Medical Director at Cambridge Biotherapies. He received his BA from Harvard University, attended Tufts Medical School, and completed his residency in Psychiatry at Cambridge Hospital, Harvard Medical School, where he served as Chief Resident. Dr. Brenner was an Attending Psychiatrist at Cambridge Hospital, a Fellow in the Program for Psychotherapy, and an Instructor in Psychiatry at Harvard Medical School from 2000-2010. He is also a graduate in psychoanalysis from the Boston Psychoanalytic Society and Institute and has maintained a private practice for over 25 years. He currently serves as a Teaching Associate in Psychiatry, Part-time, at Harvad Medical School.
Olga Pavleyeva, P.M.H.N.P
Nurse Practitioner and Infusion Nurse
Olga is a Psychiatric Nurse Practitioner with extensive training in ketamine-assisted psychotherapy. She has worked in a wide range of medical settings, including surgical intensive care, was a member of the IV team at Massachusetts General Hospital, and has been with Cambridge Biotherapies™ since 2017.
Odessa Holt, MSW
Ketamine-assisted Psychotherapist and Psychotherapy Program Lead
Odessa Holt completed master’s degrees at Boston University in social work and public health. She has over 20 years of experience working in healthcare as a medical social worker, clinical supervisor, trainer, and manager. As a ketamine-assisted psychotherapist, Odessa takes a trauma-informed approach and focuses on creating a warm and collaborative space for patients to safely explore this powerful treatment.
Marielle Abell, PA-C
Marielle Abell is a dedicated Physician Associate with over 22 years of patient care experience in palliative care and behavioral health. She earned her Physician Associate degree from Yale University School of Medicine. Marielle specializes in ketamine-assisted therapy, creating a safe and supportive environment for patients to explore this transformative treatment modality.
Reina Lovelace, LCSW
Ketamine Assisted Psychotherapist, Psychotherapist
Reina Lovelace, LCSW, brings over 20 years of experience in yoga, meditation, and somatic therapy to her clinical practice in Massachusetts. She adopts a holistic, trauma-sensitive approach that emphasizes the mind-body connection, guiding clients toward healing and deeper self-awareness. Reina focuses on somatic-based interventions to help clients process trauma, develop resilience, and foster a sense of safety and wholeness. Dedicated to providing safe, ethical, and accessible care, she advocates for evidence-based, transformative ketamine and psychedelic-assisted therapies. Her practice is rooted in compassion and tailored to meet the unique needs of each individual.
Nicole Chaitman, AGNP-C, PMHNP-BC
Nicole is a board-certified Psychiatric Mental Health Nurse Practitioner (PMHNP-BC) and Adult-Gerontology Nurse Practitioner (AGNP-C) with a diverse clinical background spanning acute care, primary care, and long-term post-acute settings. Her experience across these areas has shaped a deep understanding of the critical role mental health plays in overall wellness. Nicole is committed to supporting individuals in achieving not only symptom relief but also a greater sense of purpose and fulfillment in their lives.
Alexandra K. Ellis, PA-C, MPAS, CPT, RYT-200
Alexandra is an NCCPA-certified Physician Assistant with a diverse clinical background spanning internal medicine, urgent care, addiction medicine, and behavioral health. She earned her Master of Physician Assistant Studies from the Massachusetts General Hospital Institute of Health Professions (MGH IHP) and has also completed an Advanced Certification in Psychiatry for Physician Assistants from the MGH IHP.
In addition to her medical training, Alexandra brings over 14 years of experience in fitness, yoga, and wellness education. She is a Certified Personal Trainer and Registered Yoga Teacher (RYT-200), and is the founder of a wellness-based practice focused on integrating movement, education, and lifestyle support into health and healing. Her work is informed by a strong foundation in mind-body practices that support nervous system regulation, emotional resilience, and overall well-being.
Alexandra is passionate about supporting individuals navigating depression, anxiety, mood disorders, trauma, and other complex mental health presentations. She emphasizes compassionate, collaborative, and evidence-based care, and is committed to creating a safe, grounded, and supportive environment for patients undergoing interventional and integrative psychiatric treatments.
Her approach honors the connection between physical health, mental health, and lived experience, with a focus on fostering not only symptom relief, but also greater self-awareness, stability, and long-term healing.
Here’s How to Refer & Collaborate With Us
Refer Now
Fill out the brief form found at “Refer Now”. We’ll immediately send you an email, which you can forward to your patient (or their caregiver) for them to schedule a no-charge consultation with us.
We Meet With Your Patient
We will conduct a thorough psychiatric evaluation and design a customized treatment plan tailored to your patients specific needs which we will share with you.
Treatment Begins
Your patient’s care will be overseen by our highly qualified and carefully trained medical staff. We’ll monitor and adjust along the way, and proactively communicate progress and outcomes.
Proven treatments for depression including
Ketamine Therapy, Spravato, and TMS that bring real relief.
Ketamine Infusions
Groundbreaking approach that has shown fast-acting relief for depression, anxiety, and more.
Spravato
Find rapid relief from depression with FDA-approved Esketamine (Spravato), covered by insurance.
Accelerated TMS / TMS Therapy
Cutting-edge medication-free therapy informed by published research on accelerated theta-burst stimulation protocols.
Psychedelic Therapy
Ketamine-Assisted Psychotherapy (KAP) combines preparation, medication (ketamine), and talk therapy.
Need More Information Before Referring?
Schedule a meeting with our Provider Liaison team so they can:
- Provide an overview of how we might collaborate.
- Get answers to questions you have on the “how and why” of these treatment options.
- Learn how we can best be of help.
- Introduce you to our Medical Director.
We are here to be your partner, not to replace you in any way.
Research
Ketamine Research
Explore the latest in ketamine research: a groundbreaking compound showing promise for treatment-resistant depression and various neuropsychiatric conditions. Dive deeper into the science, benefits, and potential of this unique molecule.
TMS Research
Dive into cutting-edge TMS (Transcranial Magnetic Stimulation) research: a non-invasive therapy transforming the landscape of neuropsychiatric treatment. Discover the science, impact, and future potential of this revolutionary technique.