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Tobias Gerhard, BSPharm, PhD, FISPE

Core Faculty


Tobias Gerhard is a pharmacoepidemiologist and the Founding Director of the Rutgers Center for Pharmacoepidemiology and Treatment Science (PETS). He also serves as Director of the Institute for Health, Health Care Policy and Aging Research. Dr. Gerhard received his pharmacy degree from the University of Freiburg, Germany (2002), and his PhD in pharmacoepidemiology from the University of Florida (2007). His work focuses on the development and evaluation of modern pharmacoepidemiologic methods with applications in mental health and geriatric pharmacotherapy. He has extensive experience working with large claims and EHR datasets and has published widely on use, safety, and outcomes of therapeutics, particularly of psychotropic medications in vulnerable populations. Dr. Gerhard’s work has been funded by NIA, NIMH, AHRQ, PCORI, and by multiple foundations. Currently, he serves as PI of two R01 awards from the NIA, and as subcontract PI or Co-I for several other NIH-funded projects. His work has been recognized with a NARSAD Young Investigator Award from the Brain and Behavior Research Foundation, a NCDEU New Investigator Award from the American Society of Clinical Psychopharmacology, and the 2020 Sternfels Prize for Drug Safety Discoveries. Dr. Gerhard is a Fellow of the International Society for Pharmacoepidemiology (ISPE) and its current President and serves on committees for FDA and the National Academies of Sciences, Engineering, and Medicine (NASEM).

Research Profile
Pharmacoepidemiology, Health Outcomes, Health Services Research, Mental Health, Geriatrics

Select publications

  1. Gerhard T, Stroup TS, Correll CU, Setoguchi S, Strom BL, Huang C, Tan Z, Crystal S, Olfson M.  Mortality Risk of Antipsychotic Augmentation for Adult Depression. PLOS ONE. 2020; 30;15(9):e0239206.
  2. Stroup TS, Gerhard T , Crystal S, Huang C, Tan Z, Wall M, Mathai C, Olfson M. Comparative Effectiveness of Adjunctive Psychotropic Medications in Schizophrenia. JAMA Psychiatry. 2019:76(5):508-515.
  3. Gerhard T, Stroup TS, Correll CU, Huang, C, Tan Z, Crystal S, Olfson M. Antipsychotic Medication Treatment Patterns in Adult Depression. J Clin Psychiatry. 2018:79(2):16m10971.
  4. Stroup TS, Gerhard T, Crystal S, Huang C, Olfson M. Comparative Effectiveness of Clozapine and Standard Antipsychotic Treatment in Adults with Schizophrenia. Am J Psychiatry. 2016;173(2):166-73.
  5. Gerhard T, Devanand DP, Huang C, Crystal S, Olfson M. Lithium Treatment and Risk for Dementia in Adults with Bipolar Disorder: A Population-Based Cohort Study. BJP. 2015;207(1):46-51.
  6. Gerhard T, Huybrechts K, Olfson M, Schneeweiss S, Bobo WV, Doraiswamy PM, Devanand DP, Lucas JA, Huang C, Malka ES, Levin R, Crystal S. Comparative Mortality Risks of Antipsychotic Medications in Community Dwelling Older Adults. BJP. 2014;205:44-51.

April 2020 – March 2025
A Novel Approach to Examine Within-Class Therapeutic Exchangeability of Medications
NIH/NIA (1R01AG063937-01A1)
Principal Investigator

September 2019 – August 2023
Data Analysis for Drug Repurposing for Effective Alzheimer’s Medicines (DREAM) Study
NIH/NIA (75N95019C00057)
Subcontract PI

August 2019 – June 2023
Antibiotics, Juvenile Idiopathic Arthritis, and Antirheumatic Treatment Response
NIH/NIAMS (R01AR074436)

July 2019 – June 2020
Understanding the Co-occurrence of Schizophrenia and Alzheimer’s Disease and Related Dementias
NIH/NIMH (P50MH115843-02S1)
Subcontract PI

July 2019 – June 2020
Identifying Age-Related Antecedents to Suicide in Schizophrenia
NIH/NIMH (P50MH115843-02S2)
Subcontract PI

July 2019 – February 2024
Strengthening the Evidence-Base for Drug-Disease Interactions in Older Adults
NIH/NIA (R01AG061092-01A1)
Principal Investigator

March 2019 – February 2024
New Jersey Alliance for Clinical and Translational Science: NJ ACTS

March 2019 – January 2023
Opioid Overdoses among Medicaid Beneficiaries: Predictors, Outcomes, and State Policy Effects
NIH/NIDA (1R01DA047347)

November 2016 – November 2021
Improving Causal Inference Methods via Statistical Learning with High-dimensional Data

July 2015 – June 2018
Comparative Effectiveness of Adaptive Pharmacotherapy Strategies for Schizophrenia
Subcontract PI

May 2017 – February 2018
Linkage Methods for Electronic Medical Record Datasets
Bristol-Myers Squibb
Principal Investigator

October 2015 – November 2016
Long-Acting Injectable Antipsychotic Medication Use in Medicaid
Stanley Medical Research Foundation

July 2014 – June 2016
Safety of Second Generation Antipsychotics for Adult Depression
NIH/NIMH (R21MH102724-01A1)
Principal Investigator

September 2011 – August 2016
Center for Education and Research in Mental Health Therapeutics
AHRQ (U19HS021112-02)