Alexander Wittenberg, DO

Dr. Theresa Colberg is a board certified adult psychiatrist. She offers guidance with navigating difficult and painful emotions that may result from mood disorders, stressful life situations, the loss of a loved one, traumatic events, attachment traumas, or neurodevelopment disorders. Within a safe, and supportive working relationship, Dr. Colberg will strive to reach an understanding of your unique situation, identify the issues that are interfering with progress, and develop a plan to better identify and achieve your goals. Previous to joining Talkiatry, Dr. Colberg served as a clinical psychiatrist for the VA Healthcare System, providing care for veterans with a predominant focus on treatment of post traumatic stress disorder. She has also worked collaboratively as an integrated psychiatrist for a primary care FQHC, treating psychiatric symptoms within a primary care setting. Dr. Colberg completed her Psychiatry Residency from Mount Sinai-Beth Israel in New York City and obtained her medical degree from Temple Medical School in Philadelphia. She offers 60-minute initial appointments and 30-minute follow-up appointments, and she won't hesitate to collaborate with other mental health experts as necessary to better support your needs.

Dr. Jenna Hartman is double board certified in General Psychiatry and Addiction Psychiatry. Dr. Hartman graduated from Tufts University before completing medical school at New York Institute of Technology College of Osteopathic Medicine. She then completed residency at Maimonides Medical Center, where she was a Chief Resident, and then pursued an addiction psychiatry fellowship at Mount Sinai Beth Israel. Dr. Hartman was also trained in psychodynamic psychotherapy by the Psychoanalytic Association of NY. Following her training, Dr. Hartman returned to Maimonides Medical Center, where she worked as an attending adult outpatient clinic, treating patients from many different backgrounds with a wide array of diagnoses. She holds a special interest in treating mood disorders, anxiety disorders, and OCD. Dr. Hartman uses a compassionate and thoughtful approach in order to form a collaborative partnership with her patients. She believes in treating the person as a whole and tailoring treatments to each individual's specific needs. Dr. Hartman works with patients in 30 30-minute follow up sessions, where in addition to medication management she provides supportive and at times psychodynamic therapeutic techniques.

Dr. Alexandra Hamlyn is a board-certified adult psychiatrist and board-certified child and adolescent psychiatrist. She completed her medical education at Cooper Medical School of Rowan University and then completed her residency in adult psychiatry at Icahn School of Medicine at Mount Sinai Beth Israel. She then went on to complete her child and adolescent psychiatry fellowship at NYU Langone and Bellevue Hospital. During this time, she also taught a course titled Love Actually at NYU School of Arts and Science. During training, Dr. Hamlyn gained extensive clinical experience in psychiatric inpatient, outpatient, and emergency settings, allowing her the opportunity to treat patients of all ages and backgrounds in numerous busy hospitals in New York City. Dr. Hamlyn's primary focus is on medication management, though she also has experience working in four different outpatient clinics where she has gained expertise in multiple different therapy modalities. If appropriate, Dr. Hamlyn will refer you for psychotherapy and collaborate with your therapist to support your care. She appreciates the importance of fostering a meaningful therapeutic relationship, and her goal is to make every patient feel welcomed in a non-judgmental treatment environment. She also takes a holistic approach as she understands that good health creates a sense of overall well-being and improved mental health. She strongly emphasizes the importance of mindfulness, self-compassion, exercise, nutrition, and interpersonal relationships throughout treatment. She looks forward to meeting and working with you.

Dr. Alexandra Dunn is a board-certified adult psychiatrist who completed her medical training at the University of California Irvine School of Medicine. She then moved to New York to complete her psychiatric residency training at Mount Sinai Beth Israel. During training, Dr. Dunn gained extensive clinical experience in psychiatric inpatient, outpatient, and emergency settings, allowing her the opportunity to treat patients of all ages and backgrounds. In addition, she co-led a mindfulness group at the outpatient clinic, worked with students at Baruch College, and rotated with the Assertive Community Treatment team at MSBI. Ultimately, Dr. Dunn chose outpatient care, focusing on treating patients with mood and anxiety disorders. While her practice primarily emphasizes medication management, she also incorporates supportive and cognitive behavioral therapy techniques in her sessions with patients. If appropriate, Dr. Dunn will refer you for psychotherapy and collaborate with your therapist to support your care. She looks forward to meeting and working with you to help you feel better.

Dr. Cabrera is a board‐certified psychiatrist with several years of experience working with an ethnically and culturally diverse population in outpatient, inpatient, and psychiatric emergency room settings. Most recently, Dr. Cabrera practiced privately treating adults with a wide range of mental illnesses both in person and via telepsychiatry. Prior to this, she was an attending psychiatrist in the outpatient department and in the Comprehensive Psychiatric Evaluation Center at Mount Sinai Beth Israel where she also served as Associate Training Director of Psychiatric Residency Training. Dr. Cabrera has a strong background in psychopharmacology and supportive and psychodynamic psychotherapy.

Kelvin is an experienced Licensed Independent Social Worker who has worked in a variety of clinical and non-clinical settings. Kelvin's years of experience include work as a case manager, mental health therapist, substance use and mental health group facilitator, a lead clinician for a school-based services program and coordinator for adventure-based programming. This experience has allowed Kelvin to serve in a variety of settings, including: schools, homes, hospitals, and outpatient clinics, as well as working with individuals from nearly every age range; anywhere from kindergarten-aged school children to adults in a nursing home and almost everywhere in between. ‍Kelvin places great importance on making treatment a unique experience for every individual, strongly believing that there is no single uniform answer to an individual's problems and solutions should be tailored to that person's specific life circumstances. Kelvin has a foundation in Cognitive Behavioral Therapy, but utilizes practices as appropriate from a variety of treatment styles, including Dialectical Behavioral Therapy, Trauma-Informed Care, Behavioral Activation, Play Therapy and many more.