Meet the Doctors at Pharmasite Research, Inc.

Sarah J. Herts, D.O.

Sarah J. Herts, D.O. is a psychiatrist in private practice in Baltimore Maryland, and a psychiatrist at Sheppard and Enoch Pratt Hospital. In addition, Dr. Herts is a clinical research investigator at Pharmasite Research. As a research investigator, Dr. Herts has worked on numerous clinical trials of investigational treatments for central nervous system disorders, including major depression, treatment-resistant depression, obsessive-compulsive disorder, bipolar disorder, ADD/ADHD, and migraine headache.

Dr. Herts earned her medical degree from the West Virginia School of Osteopathic Medicine, and she completed her residency in Psychiatry at University of Maryland and Sheppard and Enoch Pratt Hospital. She is board certified by the American Board of Psychiatry.
Dr. Herts is accepting new patients for medication management and psychotherapy in Baltimore, MD. She specializes in adults who are suffering from depression, anxiety, bipolar disorder, addiction, PTSD, OCD, ADHD, and personality disorders. Dr. Herts provides a collaborative, comprehensive, and holistic approach and values continuity of care with other providers and loved ones when appropriate and permitted.

To schedule an appointment, please call 443-738-4170, or email for a free consultation.


Hinda F. Dubin, M.D.

Bio Coming Soon!








Dima Hnoosh, M.D., FACP

Bio Coming Soon!








Jason R. Brody, P.A.-C

Bio Coming Soon!








Alan Jonas, M.D.

Alan Jonas, M.D is a clinical research investigator and co-owner of Pharmasite Research, Inc., a clinical trials company dedicated to industry sponsored neuroscience outpatient research. Pharmasite Research, Inc. has been in existence for 11 years and is widely respected for quality clinical research. Dr Jonas has functioned as the principal investigator or sub investigator in over 80 clinical trials in areas including depression, bipolar disorders, anxiety disorders, ADD in adults and children, geriatric depression, dementia of the Alzheimer’s type and vascular type, sleep disorders, fibromyalgia, sexual dysfunction associated with antidepressant treatment, and schizophrenia. He is the author or co author of several research papers resulting from these studies.

In addition Dr. Jonas is a board certified adult and geriatric psychiatrist and has been active in a mental health oriented group private practice for the past 21 years. His areas of expertise include neuropsychiatry, psychopharmacology, geriatric psychiatry, mood disorders and adult ADD.

Dr. Jonas serves on the faculty or speakers bureau of seven pharmaceutical companies, including the national speakers bureau of Wyeth Pharmaceuticals.

He has given over 300 lectures and presentations and is invited and actively travels throughout the United States presenting psychopharmacologic industry sponsored lectures and case presentations and non industry CME lectures as well as participating in advisory boards.


Robert B. Lehman, M.D.

Robert B. Lehman, M.D is practice director of Psychiatric Consultants, an outpatient psychiatric practice in Baltimore Maryland. He is also a partner and clinical research investigator at Pharmasite Research, and a psychiatrist at Sinai Hospital of Baltimore. As a principal investigator, he has examined the efficacy and safety profiles of various treatment options for a broad range of mental illnesses, including generalized anxiety disorder, panic disorder, social anxiety disorder, major depressive disorder, treatment resistant depression, obsessive-compulsive disorder, and schizophrenia, bipolar disorder, ADD/ADHD, child and adolescent depression and bipolar disorder, primary insomnia, co-morbid insomnia, Alzheimer’s Disease, and cognition studies.

Dr. Lehman is board certified by the American Board of Psychiatry and Neurology and is an active member of the America Psychiatric Association, the Medical and Chirurgical Society of Maryland, the Baltimore County Medical Association, and the Maryland Psychiatric Society. He is a Fellow of the American Psychiatric Association. He is past also Chairman of Education the P’TACH School in Baltimore, Maryland.

Dr. Lehman has served as a consultant in the Traumatic Brain Injury Unit at Sinai Hospital of Baltimore. He is also a clinical instructor in the department of psychiatry at the University of Maryland School of Medicine.

During his career, Dr. Lehman has authored and co-authored several scientific reports that have appeared in many leading journals, including Psychiatric Times, The Journal of Psychiatry and Neuroscience, CNS Spectrums, and Primary Psychiatry and Pediatrics. He has presented posters at Institute for Psychiatric Services Annual Meeting, NCDEU, and the US Psychiatric Congress.

Dr. Lehman earned his medical degree from the University of Maryland School of Medicine. He also completed his residency in Psychiatry and a fellowship in Child Psychiatry at Sheppard and Enoch Pratt Hospital in Towson, Maryland.