Skip to main content

Marnie Stefan, MD

Staff Psychiatrist
Languages
English
Spanish
SPECIALTIES
Medication Management

Education and training

  • University Of Puerto Rico School Of Medicine, MD
  • University of Florida College of Medicine, Residency

Get to know

Marnie Stefan, MD

Background and credentials

Dr. Stefan is a psychiatrist with extensive experience in outpatient care, inpatient care, and assertive community treatment. She has served as a medical director for large institutions, overseeing the treatment of individuals with complex mental illnesses. Born and raised in Puerto Rico, she is fluent in both English and Spanish. She earned her medical degree from the University of Puerto Rico School of Medicine and completed her psychiatry residency at the University of Florida, where she received recognition for her skills as a psychotherapist.

Treatment approach

Dr. Stefan is deeply committed to patient-centered care, adapting her role to the individual needs of each patient. She believes in treating the whole person, rather than just a diagnosis, recognizing that each patient has unique psychosocial circumstances. She has a strong foundation in psychotherapeutic interventions and is dedicated to providing engaging, compassionate, and meaningful therapy in every patient interaction. With over 10 years of experience as a psychiatrist, she has worked extensively in telemedicine since 2013, ensuring that remote care is as effective and personal as in-person visits.

What you can expect in a first visit

Patients meeting Dr. Stefan for the first time can expect a comprehensive and holistic evaluation that considers their symptoms, personal history, and life circumstances. She takes the time to build strong therapeutic relationships, fostering a caring and engaging environment where patients feel understood and supported. Whether through telemedicine or in-person care, she prioritizes personalized treatment plans that integrate medication management and psychotherapy, ensuring the highest quality of care tailored to each patient’s needs.

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.

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

Allison Holt, MD

National Medical Director

Dr. Allison Holt is an experienced, board-certified child, adolescent, and adult psychiatrist who has worked in mental health care in a variety of settings, including health care administration, academia, inpatient psychiatry, private practice outpatient care, forensic and disability evaluations, correctional psychiatry, eating disorder care, and ECT. Dr. Holt is dedicated to providing patients with a relaxed, trusting environment that encourages dialogue and instills the freedom to pursue healing and growth. With empathy, patience and an approachable style, she helps patients see their future with fresh eyes � and develop a plan that will accomplish their goals for change. While medical expertise forms the foundation of Dr. Holt's treatment, her warmth and a sense of compassion are often key motivating factors for patient change and success. Dr. Holt treats a wide variety of needs and illnesses in children, adolescents, and adults, including depressive disorders, bipolar disorders, anxiety disorders, substance-related and addictive disorders, attention disorders, trauma related disorders, and obsessive-compulsive disorders. Through a patient-centered mix of evidence-based treatments, including medication, psychotherapy, and patient education, she helps her patients understand their options and create appropriate treatment plans that empower them to move toward positive change. Dr. Holt received her medical degree from Ohio State University. She completed a General Psychiatry Residency Program (with extra emphasis in addiction and forensic psychiatry), and a Child and Adolescent Psychiatry Fellowship, at the University of Minnesota. Prior to joining Talkiatry, Dr. Holt was the Physician Chief of the Mental Health and Addiction Service Line at M Health Fairview, the largest provider of mental health care in Minnesota. At the same time she was the Vice Chair of Clinical Affairs at the University of Minnesota Department of Psychiatry. Dr. Holt has been awarded "Top Doctor" by Minneapolis-St. Paul Magazine every year from 2014 to 2022. She was president of the Minnesota Psychiatric Society 2020-2021, and was also the co-editor of the Minnesota Psychiatric Society's newsletter, Ideas of Reference, from 2010-2019.

Benjamin Chambers, MD

Staff Psychiatrist

Dr. Benjamin Joe Chambers is a board-certified psychiatrist specializing in the treatment of adults. He has been practicing for 7 years. His practice focuses on medication management and brief psychotherapy for patients struggling with a wide array of psychological problems. For patients who need more intensive psychotherapy, Dr. Chambers works closely with a team of therapists who can step in and provide additional interventions. Dr. Chambers attended medical school at Texas A&M College of Medicine and completed his residency training at the University of Colorado in Denver. Having completed training, he returned to Austin, TX, and was an inpatient psychiatrist and Assistant Professor for Dell Medical School. He was extensively involved in resident physician education and helped run the medical school's primary inpatient mental-health training site throughout the Covid-19 pandemic. He was known amongst residents for his strong focus on utilizing psychotherapy to better understand and treat patients regardless of the treatment setting. Dr. Chambers treats adult patients, with a special focus on mood disorders, anxiety, trauma, and interpersonal conflict.‍

Sharon Kahler, MD

Staff Psychiatrist

Dr. Sharon Kahler is Board Certified in Adult and Child & Adolescent Psychiatry and treats patients of all ages. She has over a decade of experience in both community mental health centers and private practice, working with individuals from diverse backgrounds. She earned her medical degree from New York Medical College, completed Adult Psychiatry Residency at New York-Presbyterian/Weill Cornell, and completed Child and Adolescent Fellowship training at NYU Langone and Bellevue Hospital. Her clinical interests include mood and anxiety disorders, PTSD, and childhood psychiatric disorders.

Dr. Kahler is committed to providing compassionate, high-quality mental health care. She fosters a therapeutic, nonjudgmental environment where patients can openly share their concerns and values. Viewing treatment as a partnership, she encourages patients to play an active role in their care and takes a whole-person approach, considering lifestyle, environmental, and social factors that contribute to healing.

Dr. Kahler begins with a comprehensive assessment to understand each patient’s history, background, and treatment priorities. She develops individualized treatment plans using evidence-based approaches, supporting patients in navigating life’s challenges and finding a path to mental wellness.

Briana Mathews, MD

Staff Psychiatrist

Dr. Mathews is an adult psychiatrist who works with young adults and adults struggling with anxiety and depressive disorders. She uses a compassionate, non-judgmental, and reflective approach to listening and working with clients. Dr. Mathews' practice focuses on medication management, offered in conjunction with supportive therapy in 30-minute follow-up visits. Dr. Mathews completed medical school at Stony Brook University School of Medicine where she also earned her masters in Medical Humanities, Compassionate Care, and Bioethics. She completed her adult psychiatry residency training program at Montefiore/Albert Einstein College of Medicine. The philosophy of Dr. Mathews' practice is to help promote each individual's natural capacity for healing. She ultimately strives to help clients create rich and meaningful lives while also offering mindfulness skills to empower clients to effectively cope with the pain and suffering that life can bring.

Charles Stanfa, DO

Staff Psychiatrist

Dr. Chuck Stanfa is a board-certified psychiatrist who genuinely enjoys helping people.  He has practiced in a wide range of settings, including both outpatient and inpatient during the past 10 years.  He studied medicine at the University of Medicine and Dentistry of New Jersey.  He completed his psychiatry residency training at Drexel University College of Medicine in Philadelphia.  He went on to complete a Community Psychiatry Fellowship at the University of Pennsylvania and has continued to serve the greater Philadelphia area.  

Dr. Stanfa tries to take a person-centered approach to psychiatry.  He spends time getting to know each person and is easy to talk to.  He takes a collaborative approach to medication management and provides supportive therapy.  He believes that the relationship is one of the most important aspects of treatment.  He is open to working with most diagnoses including Mood Disorders, Anxiety Disorders, PTSD, ADHD, Personality Disorders, and others.  He will work with each person to develop a treatment plan that works for them.

Cherie Tubeileh, PMHNP

Staff Nurse Practitioner

Cherie Tubeileh, PMHNP-BC, is a compassionate Psychiatric Nurse Practitioner dedicated to providing personalized, evidence-based mental health care. Cherie earned her master’s degree from the Medical College of Ohio and her post-master’s certification from Rush University. Outside of work, she enjoys hiking, yoga, and meditation, reinforcing her belief in the importance of balance and self-care.

With expertise in diagnosing and treating various conditions, she empowers patients through psychopharmacology and therapeutic interventions. Cherie embraces a holistic approach, recognizing the vital connection between mind, body, and spirit in the journey to mental wellness.

Her approach integrates evidence-based practices with a holistic understanding of everyone’s unique needs, ensuring personalized and effective care. Cherie has worked extensively with diverse populations, including individuals managing anxiety, depression, trauma, and mood disorders. She is skilled in psychopharmacology, therapeutic interventions, and patient education, fostering a supportive environment that empowers individuals on their journey to wellness.

Ready to get matched?

Start our short assessment
Specialties
Medication Management
States
Florida
New York
Languages
English
Spanish
Takes insurance
Virtual visits
10 years experience