Skip to main content

Peter Szeibel, MD

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

Education and training

  • State University of New York Upstate Medical University Doctor of Medicine (MD)
  • Long Island-Jewish Medical Ctr (Fellowship)
  • Long Island-Jewish Medical Ctr (Residency)

Get to know

Peter Szeibel, MD

Dr. Peter Szeibel is board certified in adult psychiatry and has been practicing for over 36 years. His practice has focused primarily on medication management within the context of a supportive psychotherapeutic relationship. He also utilizes cognitive behavioral techniques. If the patient requires more intensive psychotherapy, Dr. Szeibel refers the patient to a therapist and collaborates with the therapist. Dr. Szeibel has experience in treating Depressive Disorders, PTSD, Panic Disorder, OCD, Bipolar Disorder, ADHD, and many other conditions. He feels his personal strengths include his inquisitiveness, scientific curiosity, and his desire to understand his patients better. Dr. Szeibel was born in Hungary, just a few months before the Hungarian Revolution against the Soviets broke out in 1956. He and his family fled under difficult circumstances and immigrated to the United States. Dr. Szeibel grew up in New York City. He attended The Bronx High School of Science, followed by Columbia University for his B.A., where he took a double major in chemistry and music. After obtaining his M.D. from S.U.N.Y in Syracuse, he returned to New York City for residency and fellowship training. During this time he won the Bendheim Fellowship Award at Cohen Children's Medical Center for his research study which examined the effects of background music on the academic performance of children with ADHD. His current areas of interest include adult ADHD, psychiatric and medical co-morbidities, and the LGBTQ population.

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

Rachel Bennett, MD

Staff Psychiatrist

Dr. Rachel Bennett is a double board-certified physician in General Adult and Child and Adolescent Psychiatry.  She graduated magna cum laude from Rosemont College, earning a Bachelor of Arts degree in Biology with dual minors in Biochemistry and English Literature.  She earned her medical degree from Drexel University College of Medicine with a concentration in Medical Humanities.  Dr. Bennett completed residency training at the Hospital of the University of Pennsylvania and a Child and Adolescent Psychiatry Fellowship at the Children’s Hospital of Philadelphia.  Her areas of research interest and publication during undergraduate and medical study and training have included pediatric palliative care, caregiver burden, autism spectrum disorders, and attachment-based family therapy.

Before joining Talkiatry, Dr. Bennett worked for nearly 12 years as a staff psychiatrist for Prospect Crozer Keystone Health System.  Her extensive clinical experience includes providing in-person and telepsychiatric care in a variety of settings including outpatient psychotherapy and community mental healthcare practices, hospital-based clinics, and school-based treatment programs, as well as emergency, consultation-liaison, and inpatient psychiatry.

Dr. Bennett’s treatment approach features an appreciation of the power of narrative in pursuit of deep self-understanding and meaningful personal progress.  She offers thorough assessment in an approachable, warm, and authentic manner, emphasizing the importance of lifestyle factors, the mind-body connection, relationships, and therapeutic rapport in collaboratively empowering her patients to achieve positive change, recovery, and resilience.  She has training and experience in a wide range of therapeutic modalities, including supportive, psychodynamic, cognitive-behavioral, and family psychotherapy as well as positive psychology, and Dr. Bennett’s strong systems-oriented perspective facilitates her provision of evidence-based care both as an individual psychiatrist and in collaboration with specialized medical and therapeutic care providers when appropriate.

Ashley Sharp, LPC/MHSP

Staff Therapist

Ashley Sharp is a Licensed Professional Counselor with Mental Health Service Provider
designation, who has experience working in multiple settings within the mental health
field including private practice counseling, school-based counseling, and in a behavioral
health hospital. This has allowed Ashley to work closely with individuals of various
demographics and a wide spectrum of mental health conditions. Ashley obtained her
undergraduate degree in psychology from Bryan College in Dayton, TN, and graduate
degree in clinical mental health counseling from Richmont Graduate University in
Chattanooga, TN.

Ashley has been working in the mental health field for 4 years and
focuses on mood and anxiety disorders, as well as personality disorders,
challenges in relationship dynamics, and difficult life transitions such as grief and
divorce. Ashley tailors her treatment modalities for the greatest benefit of the individual,
being considerate of the background and needs of each client.
Ashley uses an eclectic approach to therapy founded in Cognitive Behavioral Therapy
and incorporates elements of Dialectical Behavior Therapy such as mindfulness,
distress tolerance, and emotional regulation.

Holly Clark, MD

Staff Psychiatrist

Dr. Clark is a board-certified adult psychiatrist. She is fellowship-trained in Child and Adolescent Psychiatry and has been in practice for 11 years. She received her medical degree from the Medical University of South Carolina. Dr. Clark then completed her residency training and continued her training in child and adolescent fellowship at the Medical College of Georgia. Dr. Clark works with patients to create an environment where they feel comfortable and supported. She focuses on medication management along with supportive therapy. Normally visits are 30-minute follow-ups that allow time to focus on areas of support needed. If additional therapy is recommended, she will request a therapist be added to your care team to meet all your needs. Dr. Clark has worked in both inpatient and outpatient settings with adult, child, and adolescent populations. She has worked in private practice as well as community mental health, where she worked with reaching under-served communities. Dr Clark has a passion for treating both adult and child and adolescent patients with anxiety and depression.

Merna Guirguis, MD

Staff Psychiatrist

Dr. Merna Guirguis is a general psychiatrist known for her patient-centered and accessible approach. She blends compassion with evidence-based care, creating a supportive environment where patients feel heard. Her practice integrates psychiatric medication management with psychoeducation, empowering patients to make informed decisions about their treatment.

Dr. Guirguis emphasizes collaboration and transparency. She listens carefully to each patient’s concerns, encourages questions, and works to build a trusting therapeutic relationship. Her style is approachable and adaptable, ensuring patients feel comfortable sharing their experiences and actively participating in their care.

She begins by reviewing each patient’s history, concerns, and goals to craft personalized treatment plans. Dr. Guirguis combines current clinical needs with long-term wellness objectives, adjusting care collaboratively over time. When appropriate, she may recommend additional therapy to complement medication management and optimize outcomes.

Kelvin McMorris, LISW

Staff Therapist

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.

Lindsey Stewart, PMHNP

Staff Nurse Practitioner

Lindsey Stewart, PMHNP, holds three Bachelor’s degrees in Biology, Medical Technology, and Nursing, as well as a Master of Science in Nursing. She began her nursing career in 2011, working in inpatient psychiatry, and later expanded her experience to community mental health and home health for patients with behavioral health needs. In 2018, she earned her PMHNP certification from the University of Missouri–Kansas City and has since spent six years providing behavioral health medication management at an FQHC, treating patients across the lifespan.

Lindsey is passionate about her work and values each patient’s unique life story. She focuses on meeting patients where they are and creating customized treatment plans that align with their goals. Her care is rooted in a patient-centered approach, ensuring collaboration and respect throughout the treatment process.

Lindsey’s process blends structure with flexibility, tailoring care to each patient’s needs. She begins by establishing a diagnosis and treatment plan, integrating medication management, therapy, collaborative goal-setting, and ongoing progress monitoring. This holistic approach supports both mental health and overall well-being.

Ready to get matched?

Start our short assessment
Specialties
ADHD
Anxiety
Bipolar Disorder
Depression
Obsessive-compulsive disorder (OCD)
PTSD/Trauma
States
New York
Georgia
Iowa
Languages
English
Takes insurance
Virtual visits
years experience