Leadership

Michelle Zamarin serves as the Inspector General (IG) of the Washington Metropolitan Area Transit Authority. As the IG, Ms. Zamarin is the senior official responsible for audits, investigations, and oversight of WMATA’s activities and operations. The Office of Inspector General (OIG) provides leadership in promoting economy, efficiency, effectiveness, and integrity in WMATA’s programs, as well as identifying and preventing criminal fraud, waste, abuse, and gross employee misconduct.

Before her appointment as IG, Ms. Zamarin was a distinguished attorney and federal prosecutor whose career spans over two decades. In 2003, she joined the United States Attorney’s Office as an Assistant United States Attorney, where she investigated and prosecuted sex offenses, domestic violence, violent crimes, narcotics trafficking, fraud, and public corruption in both Superior Court and Federal Court. Ms. Zamarin’s leadership roles at the United States Attorney’s Office include Deputy Chief and Section Chief for various prosecutorial units. Ms. Zamarin’s background and legal experience include serving as a trial attorney at the U.S. Securities and Exchange Commission Enforcement Division, clerking on the 6th Circuit Court of Appeal, and practicing law in private practice at Skadden, Arps, Slate, Meagher, and Flom in D.C.

She holds a Juris Doctor degree from Boston University School of Law.

Rafael “Rico” Medina serves as the Deputy Inspector General (DIG) for Investigations of the Washington Metropolitan Area Transit Authority. As the DIG, Mr. Medina is the senior official responsible for investigations, cybercrimes and data analytics impacting WMATA’s activities and operations.

Mr. Medina’s career spans over three decades, starting as a Special Agent with the U.S. Air Force Office of Special Investigations. He later joined the federal Inspector General community, working for various OIGs specializing in financial crimes, bank fraud, procurement fraud, public corruption, and cybercrimes. Before his current assignment, he held various executive leadership roles at the U.S. Postal Service OIG where he served as Executive Special Agent in Charge, Deputy Assistant Inspector General and Deputy Chief Data Officer. In these roles, he directed investigative operations and data analytics initiatives throughout the United States as well as Puerto Rico and the US Virgin Islands. Throughout his career, he has exercised oversight over billions of dollars in federally funded programs, agency-generated revenue, and procurement expenditures, resulting in the identification and detection of billions of dollars in fraudulent activity.

He is a graduate of the University of Maryland.

Yamani Dole serves as the Deputy Inspector General for Audits & Evaluations of the Washington Metropolitan Area Transit Authority. Mr. Dole is the senior OIG official responsible for OIG audits and evaluations of WMATA programs and operations.

Mr. Dole’s leadership and auditing experience spans over twenty years, having held leadership positions in government and the private sector. Since joining WMATA OIG in 2018, Mr. Dole has served as an Audit Manager and Audit Director. His contributions to the mission of WMATA OIG have been instrumental in enhancing the effectiveness and efficiency of WMATA programs and operations. Prior to joining the OIG, Mr. Dole served as the Deputy Auditor to the Board at Fairfax County. His experience also includes the private sector leading audit teams through complex and challenging audits in the United States and Asia. Earlier in his career, he gained valuable financial expertise as a Financial Advisor at Merrill Lynch. He holds certifications as a Certified Internal Auditor, Certified Government Auditing Professional, and Certified Fraud Examiner.

He is a graduate of the University of Northern Florida.

Jon Hooks serves as Counsel to the Inspector General of the Washington Metropolitan Area Transit Authority and as General Counsel to the Office of Inspector General, serving as the IG’s senior legal and policy adviser and providing legal support to the staff.

Mr. Hooks has over two decades of experience as a trial lawyer and prosecutor, having tried dozens of cases. He began his legal career at Arnold & Porter LLP, where he handled civil litigation and government investigations. He then joined the Lawyers’ Committee for Civil Rights, where he investigated and brought class action and impact litigation. In 2007, Mr. Hooks became an Assistant U.S. Attorney for the District of Columbia, prosecuting cases ranging from white-collar fraud to homicide. In 2016, he joined the SEC, where he investigated and litigated federal securities cases. In June 2017, he returned to the U.S. Attorney’s Office in D.C., where he served for eight years as Chief of various sections, including Cyber Crime, Fraud, Public Corruption, and Civil Rights. He supervised investigations, prosecutions, and trials of offenses such as bribery, corruption, government fraud, tax crimes, cybercrimes, money laundering (notably involving cryptocurrency), investment fraud, insider trading, foreign-organized confidence schemes, and police civil rights violations.

Mr. Hooks graduated from Harvard College magna cum laude and holds a Juris Doctor cum laude from Harvard Law School.