Our Team of POTS Specialists

Our POTS team of specialists offers expertise in several fields, including physical medicine and rehabilitation and neuromuscular diseases. We also work closely with specialists in gastroenterology, cardiology and neurology to provide well-rounded care. Our physicians and therapists are supported by a well-versed administrative team that helps coordinate appointments and any needed testing.

Meet Our Team

Tae Chung, M.D.

Director of Johns Hopkins POTS program
Assistant Professor of PM&R and Neurology
Dr. Chung is a board-certified neuromuscular specialist and physiatrist with a special interest in POTS. As a rehabilitation specialist, his goal in patient care is to restore function as close as possible to the baseline. He works as part of a team, covering all aspects of this complex disorder. His other clinical interest includes myositis and electrodiagnostic medicine. His main areas of research include the effects of aging on the neuromuscular system, and dysfunction of the autonomic nervous system.

headshot of Tae Chung

Pegah Dehghan, M.D.

Clinical Associate
Dr. Dehghan is board certified in physical medicine and rehabilitation and fellowship-trained in muscular dystrophy. She specializes in treating adults with POTS and orthostatic intolerance. She also preforms electrodiagnostic studies.

headshot of Pegah Dehghan

Sezen Karakus, M.D.

Assistant Professor of Ophthalmology
To schedule an appointment with Dr. Karakus, please email [email protected].

Dr. Karakus is an assistant professor of ophthalmology at the Wilmer Eye Institute. Her expertise is in corneal and external eye diseases, with a focus on ocular surface diseases among patients with autoimmune diseases such as Sjögren’s syndrome. She also has an interest in corneal diseases associated with abnormal sensory nerves, including neurotrophic keratitis and conditions such as neuropathic corneal pain. Within the POTS team, Dr. Karakus addresses neuropathic eye pain and ocular surface disease for patients with POTS.

headshot of Sezen Karakus

Christina Kokorelis, M.D.

Assistant Professor of Physical Medicine and Rehabilitation
Dr. Kokorelis is board certified in physical medicine and rehabilitation and fellowship trained in pediatric rehabilitation medicine. She specializes in treating children and adults with POTS and orthostatic intolerance. She takes a comprehensive, team-based approach to POTS treatment that includes medications, physical therapy and other treatments. She also sees children with concussions and chronic pain disorders.

headshot of Christina Kokorelis

Brittany Adler, M.D.

Assistant Professor of Medicine

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Peiting Lien

Physical Therapist
Board Certified in Neurologic Physical Therapy
Peiting has a diverse clinical background in treating patients with neurological impairment across the lifespan, both internationally and nationally. She has a special interest in working with patients with complex medical conditions, such as POTS, as part of a team. She also helps adolescents and adults with treatment and management of idiopathic scoliosis.

headshot of Peiting Lien

Albert "Fin" Mears, Jr.

Physical Therapist
Fin has extensive experience in caring for patients who are recovering from an injury or illness in a hospital. He also treats patients who have dysautonomia (such as POTS), normal pressure hydrocephalus, bronchiectasis and myositis.

headshot of Albert "Fin" Mears, Jr.

Ruben Pagkatipunan

Physical Therapist
Board Certified in Orthopedic Physical Therapy
Ruben’s practice and primary research areas include evaluation and management of patients with inflammatory myopathies and dysautonomia. He is the primary physical therapist with the Johns Hopkins Bayview Medical Center’s neuromuscular rehabilitation team, normal hydrocephalus clinic and dysautonomia clinic.

headshot of Ruben Pagkatipunan

Jennifer Zanni

Physical Therapist
Board-Certified in Cardiovascular and Pulmonary Physical Therapy
Jennifer specializes in working with patients with autonomic dysfunction/POTS, as well as those with complex medical and surgical conditions. She is involved in research exploring physical therapy treatments for patients with critical illness. Jennifer is also interested in the treatment of endurance impairments in patients with dysautonomia and cardiovascular and pulmonary dysfunction.

headshot of Jennifer Zanni

Elizabeth Clark

Certified Registered Nurse Practitioner
Elizabeth is a board-certified family nurse practitioner with a background in family practice and critical care. While practicing in northeast Ohio and Western Pennsylvania, she became a POTS advocate for many people in an area with limited services. She specializes in treating POTS/dysautonomia and orthostatic intolerance, with a special interest in helping patients live a better life while managing chronic conditions.

headshot of Elizabeth Clark

Erica Cerquetti

Certified Registered Nurse Practitioner
Erica is a board-certified adult and geriatric nurse practitioner with over a decade of experience in physical medicine and rehabilitation, as well as in integrative medicine. She specializes in medical management of a variety of chronic medical conditions in addition to practicing an integrative mind-body approach to treatment and coping strategies. She has a special interest in POTS/dysautonomia, Ehler-Danlos syndrome, chronic fatigue and orthostatic intolerance. As of 2022, She became a 500-hr certified yoga instructor, registered with the Yoga Alliance. In addition, she is a professional musician, composer and performer.

headshot of Erica Cerquetti

We Also Work Closely With Other Johns Hopkins Colleagues