About Dr. Castellanos

I am a board-certified psychiatrist specializing in sex therapy and the improvement of sex life for couples or individuals. I am committed to helping others learn about their own sexuality and how to achieve physical and emotional balance in their sex lives. As a physician and sex therapist, I use my passion for positive thinking, exercise and nutrition to help guide you to a position of balance and happiness. Sex therapy can include the classical Masters & Johnson model of sensate focus, or it may include other methods for decreasing anxiety, improving communication and connectedness, while also exploring whatever medical or biological reasons there may be for sexual dysfunction.  As a functional medicine doctor, I place an emphasis on the ways that lifestyle and nutrition impact your sexual desire and performance, and how it fits into sex therapy as well.  I am an expert speaker who is available to provide talks, lectures, or interviews. I am also fluent in Spanish can conduct sessions in Spanish if needed.


  • MD – Ponce School of Medicine
  • NY State License – Medicine and Surgery
  • Psychiatric Residency Training – NYU School of Medicine
  • Board Certified – American Board of Psychiatry and Neurology
  • Post-graduate Studies and Certificate – American Academy of Clinical Sexology (Previously Maimonides)

Professional Organizations/Memberships

  • General Member – American Psychiatric Association
  • Member – Alpha Omega Alpha Medical Honor Society
  • Professional Member – American Association of Sexuality Educators, Counselors and Therapists (AASECT)
  • Full Membership – Society for Sex Therapy and Research (SSTAR)
  • Active Physician Member – International Society for the Study of Women’s Sexual Health (ISSWSH)
  • Full Member – International Society for Sexual Medicine (ISSM)
  • Member – Institute for Functional Medicine (IFM)

Past Professional Activities

  • Professional Consultant – CSI NY, CBS Productions
  • Guest Lecturer – Florida Sex Therapy Institute
  • Visiting Lecturer – Intensive Short-Term Dynamic Psychotherapy, Cabrini Medical Center
  • Medical Student Teaching – Albert Einstein College of Medicine, Jacobi Hospital
  • Medical Student Teaching – NYU School of Medicine, Bellevue Hospital
  • Guest Lecturer – SHARE Cancer Support, New York City

Current Appointments

  • Attending Psychiatrist – Long Island Jewish Hospital, Emergency Room
  • Clinical Assistant Professor – Hofstra North Shore-LIJ School of Medicine

Previous Appointments

  • Attending Psychiatrist – Jacobi Hospital
  • Clinical Assistant Professor – Albert Einstein College of Medicine, Jacobi Hospital
  • Director of Mobile Crisis Unit – Bellevue Hospital Center (Division of Emergency Psychiatry)
  • Program Coordinator, ISTDP – Bellevue Hospital Center
  • Attending Psychiatrist – Bellevue Hospital Center
  • Clinical Assistant Professor – NYU School of Medicine, Bellevue Hospital



Learn how to keep your sexual desire burning strong and maximize your sexual pleasure.