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The Office of the Health Commissioner sets policy and provides leadership for the Department of Public Health. We work closely with other human service providers in Philadelphia to assure high-quality healthcare services for all.



Jane Baker
Chief of Staff and Acting Health Commissioner

Jane Baker is serving as Acting Health Commissioner. Baker has served in the Philadelphia Department of Public Health for 19 years, most recently as Chief of Staff and the Director for the Deputy Mayor for Health and Opportunity. In these roles, Baker was responsible for administrative coordination in four City departments (Health, Human Services, Behavioral Health, and Homeless Services), where she oversaw Human Resources, Information Technology services, and management of customer services.

Within the Department of Public Health, Baker also oversaw the support services in the Office of the Health Commissioner, contract compliance for Philadelphia Nursing Home, and department communications, facilities management, and performance management.  Advising the Deputy Mayor and the Health Commissioner on a broad range of policy and legislative issues, Baker also served as the Departmental Integrity Officer. Baker has a graduate degree in Clinical Psychology from LaSalle University.

Caroline C. Johnson
Acting Deputy Health Commissioner and Acting Chief Medical Officer

Caroline C. Johnson, MD, is serving in the role of Acting Deputy Health Commissioner and Acting Chief Medical Officer following appointment in July 2015. Previously, she had been the Director of the Division of Disease Control for the Philadelphia Department of Public Health for 11 years. Dr. Johnson manages departmental divisions addressing: maternal and child health; chronic disease prevention; childhood lead poisoning prevention; disease surveillance and control; environmental health services, air quality, the public health laboratory, and the Medical Examiner’s office. Before joining the Department of Public Health, Dr. Johnson worked as an Infectious Disease physician and researcher at the Medical College of Pennsylvania and the Philadelphia VA Medical Center.

Dr. Johnson is a graduate of the University of Maryland Medical School, and did post-graduate training in Boston and Los Angeles. She is Board-certified in Internal Medicine and Infectious Diseases. Her areas of special interest are child and adolescent health, epidemiology, and health risk communication.

Tara Mohr
Deputy Commissioner for Finance and Administration

Tara Mohr is the Deputy Commissioner for Finance and Administration for the Philadelphia Department of Public Health. In this position, she oversees a complex budget of approximately $335 million (FY13) for the Department's ten operating divisions. Tara first joined the City's Office of Emergency Shelter and Services (currently known as the Office of Supportive Housing) in 2001 working as an intern, and was subsequently hired as a Special Projects Coordinator, a position she held until 2004. After a brief absence from the City of Philadelphia, she returned to the Managing Director's Office in 2005 to assist with overseeing the implementation of contract reform. In 2008, Tara assumed leadership on contract reform and worked to standardize contract policies and procedures across all City departments. In August 2011, she joined the Department of Public Health as a Special Assistant to the Deputy Commissioner for Finance and Administration, and was promoted to Deputy Commissioner in August 2012. Tara has a master's degree from the University of Pennsylvania School of Social Policy and Planning and a bachelor's degree in Sociology from Rice University (Houston, Texas).

Giridhar Mallya, MD, MHSP, has been the Director of Policy and Planning for the Philadelphia Department of Public Health since October 2008. In this position, Dr. Mallya helps to define public health priorities for the City, coordinates the Department’s research and data analysis activities, and works with key leadership—including the Board of Health and the Air Pollution Control Board—to set policies and develop regulations. He is also the Primary Investigator for Philadelphia’s CDC-funded Communities Putting Prevention to Work Tobacco Policy & Control and Nutrition & Physical Activity initiatives.

Dr. Mallya graduated from Brown University Medical School in Providence, RI, and completed a residency in Family and Community Medicine at Thomas Jefferson University Hospital in Philadelphia. Following residency, Dr. Mallya was a Robert Wood Johnson Clinical Scholar at the University of Pennsylvania where he received a Masters Degree in Health Policy Research.


The following are housed in the Health Commissioner's Office: