​Pain Medicine


The practice of pain medicine at P&S dates back to the 1960s and has a long tradition of being an integrated multidisciplinary service which continues today. Staffed by a team of 5 physicians and a psychologist the service provides comprehensive assessment and management of pain related disorders to a wide spectrum of patients.


Services span the spectrum from consultation to cutting-edge interventional therapies such as Dorsal Root Ganglion Stimulation and include medication management, an array of image and ultrasound guided interventional procedures, psychologic evaluation and treatment as well as complementary therapies such as acupuncture. Care is provided in several locations both on the CUMC campus and beyond.


The division is actively involved in the education of medical students, residents, and fellows. We currently train 3 fellows per year in Pain Medicine. Established in 1985 and ACGNME approved in 2000, this one- year fellowship is open to candidates who have successfully completed residency training in Anesthesiology, Psychiatry, Physiatry and Rehabilitation Medicine or Neurology. This is a one-year, multi-disciplinary and multispecialty training which focuses on both medical and interventional aspects of pain medicine, and allows for outside rotations in fields such as palliative medicine, neurosurgery/neurology, physiatry and physical medicine.

The division trains residents from the Department of Anesthesiology on a rotating basis throughout the year through the Pain Medicine Fellowship. The residents have opportunities to experience inpatient acute, chronic, and pediatric pain services at NewYork-Presbyterian Hospital/Columbia University Medical Center as well as the outpatient pain practice at our location on Broadway.

Medical Students often work with members of the team in a one-month elective open to both Columbia students and visiting students. We also host first year P&S students for their introduction to medicine course.

The division also plays an active role in the training of addiction medicine fellows from the department of Psychiatry who rotate through the office for one day a week for 6 months at a time.


The Division of Pain Medicine plays an active role in both clinical and basic science research within the department.


Michael Weinberger, MD
Chief, Division of Pain Medicine

Natasa Grancaric, MD
Assistant Professor of Anesthesiology

Cameron Marshall, MD
Assistant Professor of Anesthesiology

Leena Mathew, MD
Associate Professor of Anesthesiology
Program Director, Pain Fellowship

Anna Pashkova, MD
Assistant Professor of Anesthesiology

Nomita Sonty, PhD
Associate Professor of Medical Psychology (in Anesthesiology and Psychiatry) 

Patricia Tsui, PhD
Assistant Professor of Medical Psychology (in Anesthesiology and Psychiatry) 

Haijun Zhang, MD
Assistant Professor of Anesthesiology