Shivangi Singh, MD

Olajide Williams, MD, MS is a Professor of Neurology and Vice Dean of Community Health at the Columbia University Vagelos College of Physicians and Surgeons. He is also Vice Chair of the Department of Neurology and a specialist in the treatment of stroke and cerebrovascular diseases. Dr. Williams is an attending physician at NewYork-Presbyterian Hospital and a clinical neurologist at Columbia University Irving Medical Center. He attained his medical degree from the University of Lagos, Nigeria, and completed his neurology residency and neuromuscular fellowship training at The Neurological Institute of New York. Dr. Williams also holds a Master of Science degree from the Columbia University Mailman School of Public Health. Dr. Williams is a world-renowned leader in stroke disparities and community-based behavioral intervention research. He is founder and chair of Hip Hop Public Health, an internationally recognized organization that creates and implements multimedia public health interventions that target and engage young people in the health of their families and communities. He is a principal investigator of multiple NIH investigator-initiated awards, and MPI of the Cancer/CVD Center to Improve disease Outcomes through Multi-level and Multi-generational approaches Unifying Novel Interventions and Training health EquiTy (COMMINTY) in New York. An influential clinician-educator, Dr. Williams is a member of the Vagelos College of Physicians and Surgeons (VP&S) Virginia Apgar Academy of Medical Educators, and an inaugural member of the VP&S Academy of Community and Public Service. In addition to teaching courses on clinical practice and neuroscience to VP&S medical students, he is actively engaged in addressing healthcare disparities and promoting greater diversity and inclusion in academic medicine. Dr. Williams is co-director of the Columbia Center for Community Health at the Jerome Green Science Center where he leads pioneering initiatives including the Community Health Worker Stroke Prevention program. Dr. Williams has published numerous scholarly articles, including the book "Stroke Diaries", and received many prestigious international, national, and regional awards, such as the European Stroke Research Foundation Investigator of the Year award, two-time Columbia University Outstanding Teacher of the Year award for the Major Clinical Year, American Heart Association’s Trailblazer award, and a National Humanism in Medicine award from the Association of American Medical Colleges. Dr. Williams has been named on Fast Company Magazine’s 100 Most Creative People list, Root 100’s most influential Blacks in America list, and New York Magazine's Best Doctors list. He sits on several nonprofit boards including the Board of Directors for the Partnership for a Healthier America, whose honorary chair is former First Lady Michelle Obama.

Dr. Pamela Nguyen is board certified in diagnostic radiology with special expertise in neuroradiology and pediatric neuroradiology. She is an assistant professor of radiology at Columbia University Irving Medical Center and an assistant attending radiology at NewYork-Presbyterian Hospital. She earned her medical degree at the University of North Texas College of Medicine and completed an internship at Baylor College of Medicine, a residency at the University of Illinois Chicago Hospital and a diagnostic neuroradiology fellowship at Northwestern Memorial Hospital. She is the Neuroradiology Fellowship director and her clinical responsibilities also include teaching and supervising radiology residents and medical students. Dr. Nguyen is a member of the Radiological Society of North America, American College of Radiology, American Society of Neuroradiology and American Roentgen Ray Society.

Dr. Brett Youngerman is a leading neurosurgeon specializing in minimally invasive brain surgery and advanced neuromodulation therapies. He is recognized for providing expert care to patients with complex brain and neurological disorders, combining technical precision with a patient-centered approach. Conditions Treated: Dr. Youngerman’s expertise includes pituitary tumors, skull base tumors, and brain tumors; drug-resistant epilepsy; movement disorders including Parkinson's disease, essential tremor, dystonia, and hemifacial spasm); cavernous malformations; adult hydrocephalus including Normal Pressure Hydrocephalus (NPH); and headache and facial pain syndromes including trigeminal neuralgia and Chiari malformation. Advanced Surgical and Minimally Invasive Techniques: Dr. Youngerman is widely sought for his ability to perform advanced, minimally invasive neurosurgical techniques that maximize safety and shorten recovery. These include endoscopic brain and skull base surgery, robot-assisted neurosurgery, laser interstitial thermal therapy (LITT or laser ablation), stereotactic radiosurgery (such as Gamma Knife), and precision brain mapping performed either awake or asleep depending on each patient’s needs. Neuromodulation Expertise: Dr. Youngerman has particular expertise in neuromodulation for epilepsy, movement disorders, and other neurological conditions. He specializes in deep brain stimulation (DBS), responsive neurostimulation (RNS), and vagus nerve stimulation (VNS), offering patients access to the most advanced brain stimulation and recording technologies available. Collaborative, Patient-Centered Care: At Columbia University Irving Medical Center in New York City, Dr. Youngerman works closely with a multidisciplinary team of specialized neurologists, oncologists, radiation oncologists, endocrinologists, neuropsychologists, and rehabilitation specialists. This ensures that every patient benefits from a comprehensive, personalized treatment plan supported by the latest diagnostic tools, clinical trials, and cutting-edge therapies. Education & Training: Dr. Youngerman earned his undergraduate degree from Yale University and his medical degree from Columbia University Vagelos College of Physicians and Surgeons. He completed his neurosurgery residency training and fellowship at New York-Presbyterian Hospital / Columbia University Irving Medical Center, as well as a fellowship at Weill Cornell Medical Center. He also received a Master of Science in Patient Oriented Research from Columbia’s Mailman School of Public Health. Why Patients Choose Dr. Youngerman: Patients and referring providers choose Dr. Youngerman for his technical mastery, his compassionate, patient-focused care, and his commitment to preserving and improving brain and neurological function while minimizing recovery time. Dr. Youngerman is licensed in New York, New Jersey, and Connecticut and welcomes new patients and second opinions both in person and through secure video telehealth visits.