Dr. Post began his academic career in 1976 as an Instructor of Neurosurgery at Tufts University School of Medicine. He left Tufts four years later as Associate Proessor to join the faculty at Columbia University College of Physicians and Surgeons as an Associate Professor. Named Vice-Chairman of that Department in 1984, Dr. Post was promoted to Professor in 1987.
He has been President of the New York Neurosurgical Society and the New York State Neurosurgical Society and is presently on the Editorial Board of Neurosurgery. Dr. Post is internationally known for his work and results treating pituitary and parasellar tumors, as well as cerebello-pontine angle tumors, particularly acoustic neuroma with hearing preservation. He is a member of the Endocrine Society and was a member of the Board of Directors of the Pituitary Society. In 2009 he received the award as Endocrinologist of the Year from the Department of Medicine, Division of Endocrinology at The Mount Sinai Medical Center and he is on the advisory board of the New York Chapter of the Acoustic Neuroma Society.