About Us

Mission Statement

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

Cambridge Biotherapies pursues 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 patient’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.

Our Staff

Daniel Brenner
Daniel A. Brenner, M.D.

Medical Director
Dr. Brenner attended Harvard University and Tufts Medical School. He completed his residency in Psychiatry at Cambridge Hospital, Harvard Medical School, where he served as Chief Resident. He then served as an Attending Psychiatrist and Fellow in the Program for Psychotherapy. He was a Clinical Instructor in Psychiatry at Harvard Medical School from 2000-2010, and is a graduate of the Boston Psychoanalytic Society and Institute. He was board certified in Psychiatry and Neurology, and has been in private practice for over 20 years.
Ximena Sanchez-Samper, M.D.
Ximena Sanchez-Samper, M.D.
Staff Psychiatrist
Dr. Sanchez-Samper is a board-certified addictions psychiatrist, who obtained her degree at the Mayo Clinic in Rochester, MN and completed her addictions fellowship through the combined Massachusetts General Hospital/Brigham and Women's/McLean Hospital Addictions Fellowship Program in 2004. Since then, she has worked with adolescents and young adults with substance use disorders at Children's Hospital in Boston and McLean Hospital. She is currently the medical director of Spring Hill Recovery Center, senior advisor of clinical services for the O'Connor Professional Group, and an instructor at Harvard Medical School.
Olga Pavleyeva, R.N.
Olga Pavleyeva, R.N.
Head Nurse
Olga is a member of the IV Access Team at Massachusetts General Hospital. She has worked in a wide range of medical settings, including surgical intensive care, and is certified in Advanced Cardiac Life Support.
Edward Almeida, R.N.
Edward Almeida, R.N.
Staff Nurse
Edward is a member of the IV Access Team at Massachusetts General Hospital. He has worked in numerous medical settings, including outpatient and intensive care. Edward is certified in Advanced Cardiac Life Support.
Heather Thompson Brenner
Heather Thompson-Brenner, Ph.D.

Clinic Supervisor
Dr. Thompson-Brenner attended Harvard University and received her Ph.D. in Clinical Psychology from the University of Michigan. Dr. Thompson-Brenner founded the Eating Disorders Clinic and research center at Boston University, where she was an assistant professor of Psychology. She is a clinical psychologist providing psychotherapy and research consulting in private practice. Dr. Thompson-Brenner is the author of over 50 peer-reviewed papers and was named a Fellow of the Academy of Eating Disorders.She serves as a consultant to the Renfew Center, where she has designed and implemented a comprehensive in-patient treatment program for eating disorders.
Daniel T. Thompson
Daniel T. Thompson
Managing Director of Cambridge TMS

Daniel attended the University of Massachusetts and has experience in mental health services, marketing, and delivery. He is a trained TMS technician.
Aaliyah Rogers R.N.
Aaliyah Rogers, R.N.
Staff Nurse
Aaliyah is a member of the IV team at Massachusetts General Hospital, and has wide-ranging experience as a nurse in both inpatient and outpatient settings.
Emily Monich
Emily Monich
Director of Operations
Emily received her Bachelor of Arts from University of Richmond, majoring in Leadership Studies and minoring in French and Dance. She previously taught English as a Foreign Language and special education. Her pre-professional training as a ballet dancer sparked a passion for mental health and solidified her belief in the healing power of recovery. At Cambridge Biotherapies, Emily manages day-to-day operations, designs and implements policies and procedures, handles billing, coding, and collections, checks coverage and benefits for rendered services, leads the compliance program, and acts as the human resources officer.
Kelsey King
Kelsey King, RN
Infusion Nurse

Kelsey is a member of the infusion team at Boston Children’s Hospital. She has experience in a wide range of specialties including pediatrics, adults and infusion therapy.
Albert Aba, F., R.N.
Infusion Nurse
Al is a registered nurse and a member of the IV Access team at Massachusetts General Hospital. He has an extensive background in acute care, intensive care units, and public and community health initiatives. Al is certified in Basic Life Support and Advanced Cardiac Life Support, and he is also a certified Community Health Worker.


Cambridge Biotherapies is a member of the American Society of Ketamine Physicians
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