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Online Programs for Applied Learning

Our Online Programs for Applied Learning (OPAL) focus on emergent industry sectors that have a resounding need for highly skilled professionals. All of our programs admit and enroll new cohorts once per year, each fall. These fully online, part-time master’s degree and certificate programs are designed for working professionals.


  • Offered by the No. 1 school of public health in the country
  • Led by renowned experts who are shaping the field through research and application
  • Online delivery gives flexibility and accessibility to students around the world
  • Adds to your current experience to take your career to the next level
  • Competitive price point for tuition

The OPAL portfolio of degree and certificate programs are appealing to professionals with backgrounds in a broad range of public health and health-related fields. For detailed admissions requirements for each program, including any minimum length of work experience, please visit our OPAL Admissions page.


medical professional consoling a patient

MAS in Patient Safety and Healthcare Quality

A fully online, part-time interdisciplinary degree from three of JHU’s schools and the Armstrong Institute. Focusing on evidence-based protocols that reduce preventable patient harm and improve clinical outcomes.

MAS in Population Health Management

A fully online, part-time interdisciplinary degree focusing on developing population health management systems and leading transformation to value-based, population-focused care delivery.

mass of people outside
woman looking at data on a computer screen

MAS in Spatial Analysis for Public Health

A fully online, part-time degree focusing on how to effectively collect, map and interpret geographic information.

Global Health Practice

The certificate program in Global Health Practice is geared towards early-to mid-career health professionals in the public, private, and NGO sectors. It gives an overview of health systems, epidemiology/disease control, maternal and child health, etc.

woman with child in crib
person holding a burning cigarette

Global Tobacco Control

The certificate in Global Tobacco Control designed for research scientists and public health professionals that equips them develop and effectively communicate tobacco control policy development and implementation.

Population Health Management

The Certificate in Population Health Management prepares students to examine and respond to both challenges and opportunities to improve health within and across populations.

illustration of people connected by lines
students looking at data on a computer screen

Spatial Analysis for Public Health

The certificate program in Spatial Analysis for Public Health introduces and reinforces a unifying comprehensive spatial science paradigm, to include components of Spatial Data, GIS, and Spatial Statistics.

Hear From Our Alumni

OPAL Program Events


Virtual Open House events were held for our programs in Fall 2021 and Spring 2022. Please click the links below to view recordings of these sessions.  

 Questions about the programs? We're happy to help.

Request more information or call us at 410-955-3543 to speak with an admissions officer. You can also reach us via email at

Public Health In Action

The Bloomberg School May 2016 convocation speaker was Dr. Mona Hanna-Attisha, a pediatrician in Flint, MI who was at the center of the lead water contamination investigation. In her speech, she discussed the importance of effectively utilizing research and analytical tools, to address public health questions and crises. You can watch a portion of her speech by clicking the image below.

Contact Us

We're happy to help as you plan this important phase of your education. 

Request more information or call us at 410-955-3543 to speak with an admissions officer. You can also reach us via email at

OPAL Program Office

Senior Lecturer, and Director, Online Programs for Applied Learning 
Elizabeth F. Topper, PhD, MEd, MPH
Responsible for the management and oversight of all OPAL academic programs.

Academic Program Manager
Christina Potter, MBA
Oversees administrative operations of academic programs in OPAL. Liaison between students, faculty, and administrative offices.

Sr. Academic Program Coordinator
Ashley Conroy-Tabrizi, MAT
Assists with day-to-day administrative operations of the OPAL Office, and provides administrative support to OPAL students and faculty.