Michael Robbins, PMHNP

Amanda Rivera, PMHNP, is a board-certified Psychiatric Mental Health Nurse Practitioner through the lifespan, certified by the ANCC in 2020. She earned a Bachelor of Science in Psychology with a biology minor from Clarkson University, followed by a Bachelor of Science in Nursing and a Master of Science in Nursing from St. John Fisher College. Amanda has over 15 years of experience in mental health, beginning in 2010 as a Therapy Aide at Rochester Psychiatric Center. She has practiced across inpatient hospitals, state psychiatric facilities, outpatient community clinics, correctional settings, group homes, and telehealth/private practice. She works with patients ages 16 and older and is highly experienced in trauma, mood and anxiety disorders, ADHD, autism, psychotic and personality disorders, substance use, and parenting challenges. She values working with families to strengthen the family unit.

Amanda values open communication and collaborates with patients to establish clear, meaningful treatment goals. She provides a warm, supportive environment where patients feel heard, respected, and empowered to take ownership of their mental wellness. Treatment is individualized, with medication decisions guided by a careful balance of safety and symptom relief. Appointments are conversational in nature, allowing care to be more personalized as patients share openly.

Amanda begins each visit by ensuring privacy and safety, then explores the concerns prompting care before gathering a biopsychosocial history through collaborative discussion. She provides education throughout sessions to help patients understand diagnoses and lived experiences. Medication options are discussed based on comfort level and clinical need. Follow-ups are scheduled at the end of each visit, with frequency adjusted as stability is achieved.

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Janee Stokes is a highly experienced and dual-certified nurse practitioner, specializing in adult gerontology and psychiatry. With over 20 years of experience as a registered nurse, she brings a comprehensive background in healthcare, having worked with diverse patient populations ranging from young children to older adults.

In 2015, she earned her Master of Science in Nursing (MSN) and became certified as an adult gerontology nurse practitioner. She later expanded her expertise by obtaining certification in psychiatry, enabling her to provide holistic care for individuals with mental health needs. Her leadership roles have included serving as lead nurse practitioner and associate director of psychiatry at a federally qualified health center, where she played a key role in guiding healthcare teams and delivering quality care to underserved communities.

Janee emphasizes education as a core component of her care approach. She builds strong rapport through clear communication and trust, incorporating techniques such as Cognitive Behavioral Therapy (CBT) and motivational interviewing to support her patients’ needs. This approach empowers individuals to take an active role in their treatment journey.

Her care process is guided by each patient’s goals, integrating evidence-based practices to ensure personalized and effective support that aligns with their unique needs and aspirations.

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Background and credentials    

Dr. Alexander Wittenberg is a board-certified adult psychiatrist. He received his undergraduate degree from Cornell University, majoring in Human Biology, Health, and Society. He earned his medical degree from the New York Institute of Technology College of Osteopathic Medicine, where he was a  member of the Psi Sigma Alpha Osteopathic Honor Society. As chief resident at  Mount Sinai Beth Israel, he gained extensive experience working in outpatient  settings and managing patient care at one of New York City's busiest clinics. Dr. Wittenberg has expertise in treating a wide range of mental health conditions, including depressive disorders, anxiety disorders, bipolar disorder, trauma and stressor-related disorders, and OCD.    

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Treatment approach    

Dr. Wittenberg offers highly individualized and empathic treatment, primarily focusing on medication management. He frequently recommends integrating therapy into treatment plans and may suggest collaborating with a therapist. Dr. Wittenberg prioritizes a holistic approach, emphasizing overall well-being alongside symptom relief. He encourages the incorporation of mindfulness, self-compassion, exercise, nutrition, and attention to interpersonal relationships into his treatment strategy.    

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What you can expect in a first visit    

During an initial visit with Dr. Wittenberg, patients can anticipate a collaborative, patient-centered, and non-judgmental environment designed to foster a meaningful therapeutic relationship. He will thoroughly discuss individual concerns and treatment goals, exploring potential therapeutic interventions, including medication management and holistic strategies to support mental health and overall wellness.

Why Talkiatry?    

We’re a virtual mental health practice that makes it easy to find great care. We combine quality and convenience to help you thrive—faster. Our providers, like this one, are highly trained experts who specialize in medication management and collaborate with you on a treatment plan that fits your needs and comfort level.

Dr. Caleb Cheatham is a board-certified psychiatrist who completed his undergraduate studies at Stetson University in DeLand, FL, before earning his medical degree and completing his psychiatry residency at the University of Tennessee Health Science Center in Memphis, TN. He brings a strong foundation in psychopharmacology and a deep commitment to person-centered care.

Dr. Cheatham takes an open, nonjudgmental approach and strives to create a safe space for patients to share vulnerably. He believes in leading with compassion and listening as a core tool for understanding. His treatment philosophy is integrative—combining thoughtful medication management with supportive, individualized therapy—and he encourages patients to consider the role of lifestyle factors like sleep, nutrition, and exercise.

Dr. Cheatham begins with a conversational consultation focused on understanding each patient’s story and needs. Together, they co-create a personalized treatment plan grounded in the patient’s values. He emphasizes clear communication and routinely revisits treatment goals to ensure alignment, progress, and ongoing support.

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. Fatima Ghandour is an adult psychiatrist originally from Southeast Michigan. She earned her undergraduate degree at the University of Michigan and her medical degree at Western Michigan University Homer Stryker MD School of Medicine. She completed her psychiatry residency at Authority Health in Detroit, where she was recognized as Resident of the Year in her graduating class. Dr. Ghandour has experience practicing in both outpatient and inpatient settings and has treated a wide range of conditions including depression, anxiety, ADHD, and PTSD.

Dr. Ghandour values open communication and collaboration, working closely with patients to set clear and meaningful treatment goals. She fosters a warm, supportive environment where patients feel heard, respected, and empowered to take an active role in their care. Her empathetic and patient-centered approach helps individuals feel safe sharing their unique experiences and challenges.

Dr. Ghandour begins each relationship with a thorough evaluation, taking time to understand each patient’s history, concerns, and goals. From there, she develops an individualized treatment plan that reflects the patient’s needs and preferences. She combines evidence-based strategies with ongoing dialogue to ensure treatment remains responsive and aligned with each patient’s progress and well-being.