Therapist in Yorktown Heights, New York Gwendolyn Sullivan, Therapist

License: LMHC

Provider Gender: Female

Ages Served: 6-65+

Appointments: In-office and Telehealth

Manages Medications: No, provides therapy only

Therapist in Yorktown Heights, New York Gwendolyn Blackett-Sullivan, LMHC

Gwendolyn Blackett-Sullivan, LMHC

Gwendolyn Blackett-Sullivan is a New York State licensed mental health counselor. She has experience treating children, teenagers, adults, families and couples. She has expertise in the areas of trauma focused cognitive behavioral therapy (CBT) as well as working with couples utilizing the John and Julie Gottman’s curriculum. Ms. Blackett-Sullivan specializes in substance abuse, grief, sexual assault, PTSD, domestic violence and works with diverse mental health populations. She has supported families dealing with crisis intervention, dealing with disabilities and trauma. She utilizes various evidenced based and client centered approaches with the aim of facilitating growth, healing, change and teaches coping skills. Gwen graduated from John Jay College of Criminal Justice of The City University of New York with a Master’s degree in forensic psychology and from Herbert H. Lehman College of The City of New York with a Master’s degree in special education. Gwen is certified in the state of New York as a teacher of both elementary and special education. She is also certified as an educational administrator on both the school and district levels. Gwen completed a post Master’s advanced certification in clinical mental health counseling from Medaille College in Buffalo, New York and completed a post Master’s educational administration licensure program at Massachusetts College of Liberal Arts in North Adams.

Insurances Accepted

  • Aetna
  • Carelon (Beacon)
  • Elevance (Anthem/Empire BCBS)
  • Evernorth (Cigna)
  • Humana
  • MultiPlan (PHCS)
  • MVP Health Solutions
  • Northwell Direct
  • Optum (UnitedHealthcare)
  • Partners Direct Health
  • Provider Network of America (PNOA)
  • Sana Benefits
  • Tricare East (Humana Military)
  • World Trade Center (HealthSmart)


  • Cognitive Behavioral Therapy (CBT)
  • Couples/Marital Counseling
  • Family Therapy
  • Parent Child Interaction Therapy (PCIT)
  • Parenting Skills


  • Adoption/Foster Care
  • Autism Spectrum Disorders
  • Developmental Disabilities
  • First Responders
  • LGBTQ+
  • Men
  • Military/Veterans
  • Women


  • English



Please use our online form to schedule an appointment with Gwendolyn Sullivan. You can also call 845-279-5908 to have someone assist you.

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