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  1. Office of Global Policy and Strategy

FDA Overseas Office Directors


China Office

Roy Stephens

Acting Director

Roy Stephens is the Acting Director of the China Office in the FDA’s Office of Global Policy and Strategy (OGPS) and Human and Animal Food Supervisory Consumer Safety Officer. Stephens has spent over 20 years with the FDA in China and Cincinnati, Ohio, primarily in consumer safety officer and supervisory consumer safety officer roles. His background includes human food, animal feed, medical devices, drug, bioresearch monitoring, and import work, with actions resulting in seizures, injunctions, and prosecution. During his time in China, Stephens has had recent results involving fraud detection and data integrity.


Brandi McGrady (blue world map)

Deputy Director

Brandi McGrady is the Deputy Director of the China Office in the FDA’s Office of Global Policy and Strategy (OGPS). McGrady has spent nearly 15 years with the FDA conducting high profile inspections both domestically and abroad, responding to foodborne emergencies, and managing highly skilled teams of investigators. For the past seven years, she has worked exclusively on the successful development of the Produce Safety Network and the implementation and enforcement of the Produce Safety Rule. McGrady obtained master’s degrees in business administration from Anderson University and in public health with a concentration in emergency management from American Public University. She has a bachelor’s degree in biomedical science with an emphasis in chemistry from Grand Valley State University. Prior OGPS from the FDA’s Office of Regulatory Affairs’ Domestic Human and Animal Food Operations, where she was Branch Chief for the Produce Safety Network.


India Office

Dr. Sarah McMullen


Sarah McMullen, Ph.D., is the Director of the India Office in the FDA’s Office of Global Policy and Strategy (OGPS). Her professional experience includes analytical method development and testing for multiple FDA-regulated commodities, establishment inspections, import operations and policy, and foreign office service. Dr. McMullen’s FDA career spans over 15 years working as a chemist, tissue residue specialist, consumer safety officer, and manager. The last five years of her experience focused on international arenas, including import operations and foreign office service. Dr. McMullen has a Doctor of Philosophy in inorganic chemistry from Emory University in Georgia and a Bachelor of Science in chemistry from Emory University in Georgia.


Gregory Smith

 Deputy Director

Gregory Smith is the Deputy Director of the India Office in the FDA’s Office of Global Policy and Strategy (OGPS). His professional experience includes project management of clinical trials, risk evaluation and mitigation strategies, post marketing, and surveillance initiatives for a global contract research organization (CRO). His FDA career spans over 12 years working as a project manager in CVM’s Office of New Animal Drug Evaluation and as the director of the Special Projects Staff in the Office of Executive Programs. He specialized in complex and mission-critical scientific, regulatory, legislative, and operational issues including user-fee negotiation, supply chain assessment, legislative implementation, organization-wide governance, and portfolio management.

Prior to becoming Deputy Director, he served a year as an international relations specialist for drugs in India. Mr. Smith is a certified project and portfolio management professional and graduated with a bachelor’s degree in communications and public relations from University of Maryland, College Park.


Europe Office

Katie Serrano (2023)


Katherine (Katie) Serrano is the director of the Europe Office in the FDA’s Office of Global Policy and Strategy (OGPS). Serrano oversees the FDA’s engagements with European regulatory counterparts and other stakeholders across all FDA-regulated commodity areas in the interest of advancing the FDA’s public health mission.
Prior to assuming this role in July 2023, Serrano served six years as the director for the FDA’s Latin America Office based out of San Jose, Costa Rica. During her tenure in Latin America, the office made inroads in encouraging regulatory harmonization and convergence in the region, including the adoption of key medical device international standards involving manufacturing quality. Her office also leveraged the management of two multimillion-dollar cooperative agreements between the FDA and the Interamerican Institute for Cooperation on Agriculture to support the FDA’s international implementation of the Food Safety Modernization Act and the Produce Safety Rule. Under her leadership, the Latin America Office built and expanded regulatory partnerships between the FDA and authorities in both Mexico and Ecuador to strengthen food safety practices and oversight, benefitting consumers locally and in the United States.
Serrano began her career with the FDA as part of the 2008 inaugural class of FDA Commissioner’s Fellows and went on to work as a scientific reviewer in the FDA’s Center for Devices and Radiological Health, eventually serving as the chief of the Diabetes Diagnostic Devices Branch and later the deputy director of the Division of Chemistry and Toxicology Devices, before joining OGPS. Prior to working at the FDA, Serrano held positions as a regulatory affairs professional for Boston Scientific Corporation and a biomedical engineer at the National Institutes of Health. She received a Bachelor of Science degree in biomedical engineering and a Bachelor of Arts degree in Spanish, both from the University of Minnesota.


Shannon Thor

Deputy Director

Cmdr. Shannon Thor is the Deputy Director of the FDA Europe Office (EO), located in Brussels, Belgium, assuming the role in August 2022. Thor brings 16 years of experience as a pharmacist and public health leader, with more than eight years in senior policy advisor roles at the FDA. As an international policy analyst in the EO, she was responsible for providing leadership and technical expertise on international public health initiatives and U.S.-European Union relations, with a particular focus on maternal health projects such as improving information on the safe use of medicines in pregnancy and during breastfeeding. Her previous FDA experience included roles in the Office of Health and Constituent Affairs and in the Office of New Drugs, where she advised on cross-cutting issues such as over-the-counter monograph reform, drug and device user fee programs, and patient-focused drug development. Since her commissioning in the U.S. Public Health Service in 2015, she has deployed with various government agencies in support of public health emergencies, most notably to support the COVID-19 pandemic response.

Prior to joining the FDA, Thor served as an officer in the U.S. Navy, where she supervised pharmacy operations and directed medication safety programs at military medical facilities in the U.S., Europe, and the Middle East. She earned her Doctor of Pharmacy degree from the University of Illinois at Chicago, her Master of Science in pharmacy policy and regulation from the University of Florida, and her Bachelor of Science degree from the University of Illinois at Urbana-Champaign.

Latin America Office

CDR Michelle Rodriguez


Capt. Michelle Rodriguez, Ph.D., is the Director of the FDA’s Latin America Office (LAO), organized under the Office of Global Policy and Strategy (OGPS). In her previous role as LAO’s Deputy Director, she led strategic initiatives to transform the FDA-Mexico relationship and increase regulatory cooperation, including spearheading the US-Mexico Food Safety Partnership to improve food safety cooperation. Rodriguez also led regional engagements on whole genome sequencing, supply chain challenges, and regulatory convergence for medical products, including work with multilateral institutions, governments, and forums. She is also at the forefront in implementing a federal mandate to regulate U.S. shrimp imports from its largest providers, which includes Ecuador.

Before joining OGPS, Rodriguez held various leadership and supervisory roles in the areas of regulatory compliance, import and export operations, and emergency response activities. She served as Branch Chief within the FDA Center for Tobacco Product’s Office of Compliance and Enforcement and was also a compliance reviewer and later a post-market team leader in the Center for Devices and Radiological Health’s Office of In Vitro Diagnostics and Radiological Health. Before joining the FDA, Rodriguez was at the Center for Disease Control and Prevention’s (CDC) National Center for Emerging and Zoonotic Infectious Diseases, managing both the regulatory applications required for stockpiling, and also the national and international deployment and use of medical countermeasures in the U.S. Strategic National Stockpile. She also supported CDC’s emergency preparedness, response, and outbreak activities in Latin America.

Since her commissioning in the U.S. Public Health Service in 2011, Rodriguez has deployed and collaborated with various government agencies in support of public health responses impacting the Latin American community. Rodriguez holds a microbiology degree from the University of Puerto Rico. She completed her doctoral studies in immunology at the University of Florida and later completed a postdoctoral ORISE fellowship in virology at the CDC. 

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