Executive Team
Published: May 3, 2024


Our Executive Team
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Brian Jackson, MBA

Chief Executive Officer

In January of 2020, Brian Jackson took the helm as the Chief Executive Officer of Pediatric Associates. Along with his 20 years of leadership experience, Brian brings a proven track record of posting positive results, building strong teams, savvy business acumen, creating sustainability and uncompromised integrity.

Prior to his role with Pediatric Associates, Brian served as the president of Envision Physician Services, based out of Nashville, TN. While there, he served as the executive leader for the $6.5 billion national multi-specialty physician practice management segment. He was accountable for the day-to-day performance and growth in the outcome-focused and physician-centric environment.

His experience in healthcare is extensive, previously serving as Envision’s Chief Operating Officer and holding executive positions with Sheridan Healthcare (Sunrise, FL), DaVita Healthcare Partners and Cardinal Health.

In addition to his tenured experience in healthcare, Jackson also boasts a distinguished military career as a U.S. Army attack helicopter pilot and aviation instructor. He received his undergraduate degree in computer science from Lock Haven University and a Master’s in Business Administration from Penn State University.

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C. Rocky Slonaker, M.D., CHCO, FAAP

Chief Medical Officer

Dr. Rocky Slonaker completed his medical school training at The Ohio State University and his pediatric residency at Nationwide Children’s Hospital (formerly Columbus Children’s).  After practicing rural medicine for several years in Ohio, he moved to Florida and joined Pediatric Associates as a general pediatrician  in their Plantation, FL office in 2001. Shortly thereafter, he was promoted to administer the clinical trials programs and became a Certified Healthcare Compliance Officer for the group. In addition to these administrative duties, Dr. Slonaker had an integral role in designing and implementing the CarePlus – Medicaid ER Diversion program and as Medicaid Reform moved into Florida in 2006, Pediatric Associates launched Pediatric Associates PSN, a pediatric-only provider service network. Dr. Slonaker served as the Medical Director and Compliance Officer for the health plan until it merged with a larger area health plan in 2009.


In September 2009, Dr. Slonaker was appointing to the Florida Governor’s Medical Home Task Force, which worked toward analyzing the format and function of existing state-based medical home programs and provided recommendations to the Florida Legislature regarding the creation of a medical home in Florida.

Dr. Slonaker has been the Chief Medical Officer at Pediatrics Associates since 2010. He continues his work toward clinical excellence in pediatrics, high value accessible care for all children and the realization of a nationally accredited pediatric medical home which is a preferred employment destination for pediatricians who strive to practice high quality, evidence based medicine.

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John Do

Chief Financial Officer

John is an experienced domestic and international financial executive and board member with more than 24 years of success in finance, strategy, mergers and acquisition, start-up, and corporate turn-around. As the Chief Financial Officer for Pediatric Associates, John leads all aspects of financial management including strategic and financial planning, capital management, financial operations, reporting and investor relations. 

John has a proven track record in driving growth and financial performance in the healthcare space, most recently serving as CFO of Walgreens Boots Alliance’s (WBA) U.S. Healthcare division where he was responsible for developing the healthcare strategy and scaling the division to $8 billion in topline revenue through organic and inorganic growth. Prior to WBA, John served as the CFO for Elevance’s Carelon division where he launched and scaled their healthcare services division to over $10 billion in topline revenue. John started his healthcare career at DaVita where he launched and scaled their U.S. home dialysis business, launched and scaled DaVita’s Asia Pacific expansion in China, India, Malaysia, Taiwan and Singapore, and led the turn-around sale of Everside Health to New Enterprise Associates. He started out his career in venture capital, where he gained a passion for building companies. 

John earned a bachelor’s degree in political science from the University of Southern California and an MBA in finance and strategy from The Wharton School of the University of Pennsylvania. He currently resides in Chicago with his wife, Marysia, and daughter, Grace. 

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April Andrews-Singh, RN, ALM, JD

Chief Ethics and Compliance Officer / General Counsel

April Andrews-Singh was named General Counsel and Chief Ethics and Compliance Officer in 2022, after serving as the Vice President of Risk and Compliance since December 2020. Prior to Pediatric Associates, Andrews-Singh served as the General Counsel and Senior VP of Legal and Governmental Affairs for Nicklaus Children’s Hospital in Miami, FL. She also previously served as the Associate General Counsel and Chief Compliance Officer at Cleveland Clinic Hospital.

Andrews-Singh holds  a Bachelor’s of Science in Nursing from Wright State University,  starting her career as a neurosurgical critical care nurse. She went on to earn a law degree from Capital University Law School and a master’s in international relations from the Harvard Extension School.

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Michael Manocchio

Chief Strategy Officer

Michael Manocchio joined Pediatric Associates in December 2018 as Chief Strategy Officer.  At Pediatric Associates, Mr. Manocchio is leading a collaborative effort to execute on an aggressive organic and inorganic growth strategy.  Prior to joining Pediatric Associates, Mr. Manocchio served as the Senior Vice President of Strategy and Business Development at HealthSun Health Plans, an integrated Medicare Advantage plan with over 50,000 lives and 15 wholly-owned medical centers in Miami-Dade and Broward Counties.  At HealthSun, he oversaw their business development, financial planning & analysis and medical economics functions and was instrumental in HealthSun’s acquisition by Anthem (NYSE: ANTM) and subsequent integration activities.

Prior to his time at HealthSun, Mr. Manocchio held a series escalating roles with Oppenheimer’s Healthcare Investment Banking team where he covered the managed care and healthcare services sectors.  Mr. Manocchio left Oppenheimer as an Executive Director, having closed over 25 M&A transactions valued in excess of $4.0 billion.

Mr. Manocchio began his investment banking career at Wachovia Securities after having earned his Master of Business Administration degree from Columbia University where he graduated Beta Gamma Sigma with concentrations in finance and economics.  Mr. Manocchio earned his Bachelor of Science in Computer Science from Florida State University where he graduated Phi Beta Kappa.

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Karen Xie

Chief Digital Officer

Karen Xie joined Pediatric Associates in 2021. As the Chief Digital Officer, Karen Xie and her team are responsible for the transformation of Pediatric Associates’ digital platform. She has more than 20 years’ experience in both healthcare provider and payer industries. Most recently, she served as the Senior Vice President and Chief Technology Officer at Blue Shield of California. Dr. Xie holds a Ph.D. in Physics from Worcester Polytechnic Institute, launching her career as a research scientist in quantum machines at Columbia University. She is a graduate of the Stanford Executive Program in Leadership.