Skip to main content

Seth Mandel, MD

Staff Psychiatrist
Languages
English
SPECIALTIES
ADHD
Anxiety
Bipolar Disorder
Depression
Obsessive-compulsive disorder (OCD)
PTSD/Trauma
Geriatric
Medication Management

Education and training

  • Hofstra University Master of Business Administration (MBA)
  • University of Pennsylvania School of Medicine Doctor of Medicine (MD)
  • University of Pennsylvania Bachelor of Arts (BA)
  • Mount Sinai Medical Center New York, NY (Residency)

Get to know

Seth Mandel, MD

Dr. Mandel received his Bachelor of Arts and Doctor of Medicine degrees from the University of Pennsylvania. He completed his Residency in Psychiatry at Mount Sinai Medical Center in Manhattan. He has been board certified in psychiatry since 2001 and is a Life Fellow of the American Psychiatric Association. He has held numerous clinical and academic appointments including serving as Chairperson of Psychiatry at Huntington Hospital in Huntington, New York, and Assistant Professor of Psychiatry at Hofstra North Shore-LIJ School of Medicine.

Dr. Mandel has over 25 years of clinical experience treating all mental health conditions. He has a strong interest in mood and anxiety disorders, including work-related anxiety. He authored a section on the pharmacology of social anxiety in the book Work Makes Me Nervous. Dr. Mandel also has expertise working with clients diagnosed with borderline personality disorder. He has lectured on the pharmacologic management of this condition, including a presentation at the NIMH International Think Tank for the More Effective Treatment of Borderline Personality Disorder.

Dr. Mandel continually seeks to streamline complex medication regimens. He has completed a fellowship in integrative psychiatry and carefully considers the potential contributions of lifestyle and nutrition to overall mental health and well-being. By taking an eclectic approach, Dr. Mandel is able to achieve the best possible outcome for all whom he is privileged to serve.

Get matched with a clinician like this one

Ready to book your first appointment? Take our 10-minute assessment. We’ll match you with a clinician who meets your needs, has availability, and takes your insurance.

Get started
More Clinicians

Esha Garg, DO

Staff Psychiatrist

Dr. Esha Garg is a board-certified psychiatrist starting her post-graduate practice with Talkiatry. After completing an undergraduate degree in psychology at Johns Hopkins University, she completed her medical degree at Kansas City University of Medicine and Biosciences. She is a recent graduate from the Adult Psychiatry Residency at University of Kansas Medical Center.

Dr. Garg's practice focuses on medication management but she believes in the importance of both therapy and medication management in treating mental illness. She offers medication management with supportive therapy in 30-minute follow up visits. She also utilizes referrals to therapists to enhance collaborative care and management of illness.

Dr. Garg believes in the importance of building a strong therapeutic relationship. She focuses on treating patients with depression and anxiety disorders. She believes in a holistic, patient-centered approach to care and encourages patient's to explore their physical, emotional, social and spiritual needs in addition to their mental health.

Alexandra Hill, MD

Staff Psychiatrist

Dr. Hill is a recent graduate of the psychiatry residency program at the University of Colorado School of Medicine. During her residency, she sought out additional training in psychodynamic therapy and EMDR. She participated in the Psych Scholars track, which provided in-depth education and supervision around therapy and psychoanalytic theory. This allows her to better understand the role of both medication and therapy, to utilize, when to couple them, and what limitations they may have. She has additional interests in trauma work; women's mental health, specifically in the peripartum period; and in working with individuals facing progressive diseases or terminal diagnoses.‍

Jeena John, DO

Staff Psychiatrist

Dr. John's practice focuses on medication management, offered in conjunction with emotionally focused therapy in 30-minute follow-up visits. Occasionally, Dr. John may believe that additional therapy is also needed and ask that you bring a therapist into your care team to provide the best outcome. Dr. John strongly believes in a compassionate, collaborative approach and will provide psychoeducation to help patients make informed decisions and achieve their treatment goals.

Brianna Campbell, LMHC

Staff Therapist

Brianna Campbell, LMHC, LPC, holds a BA in Psychology and an MS in Education in Clinical Mental Health Counseling. She has experience providing telehealth and in-person therapy in community and private practice settings. She is licensed in New York, New Jersey, and Florida for telehealth, with Virginia in progress. A National Certified Counselor, she also serves as a clinical intern supervisor and psychoeducational content creator. Her certifications include Solution-Focused Brief Therapy, TGNB care, Clinical Supervision, Telehealth training, DSM-5-TR differential diagnosis, and racial justice practices.

Brianna is warm, caring, collaborative, and evidence-based. She matches each client’s pace and style to create a tailor-made wellness plan. She supports clients seeking guidance with dating, gender and sexuality, anxiety and depression, life transitions, career and education stress, organization, and purpose. Therapy with her balances heart and mind, and she ensures clients leave with a personalized toolkit for growth.

She begins sessions by explaining therapy guidelines so clients feel comfortable and empowered. She explores the concern bringing them in, followed by history, strengths, and goals. Together, she develops a measurable, personalized treatment plan using person-centered care with CBT, solution-focused strategies, psychodynamic insight, and family systems approaches.

Stacey DiMartino, MD

Staff Psychiatrist

Dr. Stacey DiMartino is a board-certified psychiatrist with over 20 years of experience. She received her undergraduate education at the University of Rochester and her medical degree from the State University of New York at Buffalo, where she also completed her residency.

Her approach is individualized and focuses on collaborative care with shared decision-making. Dr. DiMartino specializes in the treatment of adults with a wide range of mental health concerns, including posttraumatic stress disorder, depressive disorders, anxiety disorders, and bipolar disorders. She has enjoyed working with veterans for over 19 years at the VA Healthcare System.

Her style of practice incorporates medication management and supportive psychotherapy with an emphasis on whole health wellness. She will provide a thorough assessment of your mental health needs and formulate a comprehensive treatment plan. She assists with bolstering insight, enhancing intrinsic coping skills, and attaining life goals. Dr. DiMartino enjoys spending time with family, including her rescue dogs, who may sometimes make a special guest appearance during appointments. She looks forward to meeting with you and working together on achieving a fulfilling, well-balanced life.

Sarah Guzman, MD

Staff Psychiatrist

Dr. Sarah Guzman earned her medical degree from Baylor College of Medicine and completed her psychiatric residency at UT Southwestern in Dallas, TX. She served as a psychiatrist in the United States Navy and has practiced in inpatient and outpatient settings, including a state-run mental health clinic and as a civilian on a United States Army base. She provides general adult psychiatry and medication management, treating anxiety disorders, OCD, depression, bipolar disorder, ADHD, and PTSD.

Dr. Guzman strives to create a supportive, judgment-free space where patients feel heard and respected. She values psychoeducation so patients can make informed decisions about their care. Honesty, mutual trust, and clear communication are central to her approach, as she views treatment as a collaborative partnership focused on shared goals.

The initial appointment centers on understanding each patient’s history and concerns. By the second session, treatment goals are identified. From there, Dr. Guzman collaborates with patients to develop individualized treatment plans and adjust care as needed to support meaningful progress.

Ready to get matched?

Start our short assessment
Specialties
ADHD
Anxiety
Bipolar Disorder
Depression
Obsessive-compulsive disorder (OCD)
PTSD/Trauma
Geriatric
Medication Management
States
Florida
Washington D.C.
Nebraska
New Jersey
South Dakota
Languages
English
Takes insurance
Virtual visits
years experience