Students interested in pursuing multidisciplinary research to gain a broad perspective in chemistry and biology are encouraged to apply to the Chemistry-Biology Interface (CBI) PhD program. The CBI Program spans departments in Johns Hopkins University’s schools of Arts and Sciences, Engineering, Medicine, and Public Health.

Selected applicants will be asked to visit Johns Hopkins University for an interview. The CBI Program will arrange for meetings with faculty and students, and conduct tours of the facilities and community.

Application Instructions

To apply to the CBI Program, you will need to submit:

  • An online application for the chemical biology PhD
  • An unofficial undergraduate transcript
  • Statement of purpose
  • Three (3) letters of recommendation
  • Official GRE scores for the General test (optional for 2022)

In addition, one of the following subject tests may be submitted:

  • Biochemistry
  • Cell and Molecular Biology
  • Biology
  • Chemistry

If you do not plan to submit GRE general scores, please request a waiver by emailing  This request is necessary as a work around for the electronic forms.

Online applications for fall 2022 admission open on September 1st, 2021. Please submit all application materials (including letters of recommendation) by January 15th, 2022 to receive full consideration. Applicants interested in the Vivien Thomas Scholars Program must complete their application by December 1, 2021.

To aid our fall 2022 applicants, we have provided a list of CBI preceptors’ rotation and lab availability during the 2022-2023 academic year.

A select number of applicants will be invited to visit campus to tour our facilities and interact with our faculty members and their lab members on March 4th and 5th, 2022.

International Applicants

A training grant from the National Institutes of Health provides support for our students during their first year in the graduate program at the Chemistry-Biology Interface. However, the NIH limits this to U.S. citizens and permanent residents. International students who are interested in applying to this program must secure an outside grant or fellowship.

Vivien Thomas PhD Scholars

The Vivien Thomas Scholars Initiative (VTSI) is an endowed fellowship program at Johns Hopkins for STEM PhD students. It provides full tuition, stipend, benefits, targeted mentoring, and professional development. Students who have attended a historically black college and university or other minority serving institution for undergraduate study are eligible.

There is no additional application. To be considered for the VTSI, all components of the PhD application, including supplemental components, special VSTI questions, and letters of recommendation must be completed by December 1, 2021, even if the program deadline is later.