Executive Staff


Dr. Hal C. Lawrence III became Executive Vice President July 1, 2011. As Executive Vice President, he oversees the day-to-day operations of ACOG, and with his executive team, provides leadership to more than 200 staff. He started at ACOG in fall 2007 as the Vice President for Practice Activities. Dr. Lawrence's undergraduate work was completed at Vanderbilt University, and he attended medical school at Indiana University. Following residency training at the University of North Carolina, Chapel Hill, Dr. Lawrence joined a private practice in Asheville, North Carolina. In January 1991, he rejoined the University of North Carolina faculty and worked with the Mountain Area Health Education Center in Asheville to establish an ACGME-approved ob-gyn residency training program in 1992. Dr. Lawrence chaired that department and program until coming to ACOG. He is active in many medical organizations, included the Robert A. Ross Society, North Carolina Ob-Gyn Society, Southern Ob-Gyn Seminar, South Atlantic Association of Obstetricians and Gynecologists and the Residency Review Committee for Obstetrics and Gynecology. He has served as an examiner for the American Board of Obstetrics and Gynecology, Inc, as well as a reviewer for the journal, Obstetrics & Gynecology.

SANDRA ANN CARSON, MD                                                        

Dr. Sandra Ann Carson began her tenure at ACOG on March 1, 2013. She received her medical degree at Northwestern University Medical School, and completed her ob-gyn residency at Northwestern's Prentice Women’s Hospital, and her reproductive endocrinology (REI) fellowship at the University of Chicago/Michael Reese Hospital.  Most recently, Dr. Carson was professor of ob-gyn and director of REI at Brown University Medical School. An accomplished surgeon, Dr. Carson designed hysteroscopic instruments and was recognized in Best Doctors in America for more than 10 years.   She is included regularly in Good Housekeeping’s “401 Best Doctors for Women,” the Guide to America’s Top Obstetricians and Gynecologists, and others. She has published more than 130 peer-reviewed scientific papers, 60 chapters, and 6 books in reproductive medicine. She was an associate editor for the American Journal of Obstetrics and Gynecology and editor-in-chief of Sexuality, Reproduction and Menopause.   Dr. Carson served as ABOG Vice President and Director of REI. She also was President of the American Society for Reproductive Medicine and Secretary –Treasurer of the Society for Gynecologic Investigation. She chaired FDA’s Reproductive Drugs Advisory Committee and was consultant to both the FDA’s Center for Devices and Radiological Health and the President’s Council on Bioethics. Finally, Dr. Carson’s research was funded by NIH for 18 years. She recently completed her tenure on the NICHD Council. Her latest research development, the Artificial Human Ovary, was named a top 10 medical breakthrough in 2010 by Time magazine and Rhode Island 2011 Innovation of the Year.  


Sara Needleman Kline, JD, is the Chief Legal Officer. In this role, Ms. Kline advises ACOG on all legal matters affecting the organization and represents ACOG in legal proceedings. Ms. Kline joined ACOG’s legal team in 2000 and has served in her current position since 2017. Before joining ACOG, Ms. Kline was a litigation associate at a major District of Columbia law firm and clerked for the Honorable Leonie M. Brinkema of the United States District Court for the Eastern District of Virginia. Ms. Kline received her juris doctor from the American University, Washington College of Law and received her undergraduate degree from the University of Pennsylvania. 


Barbara S. LevyBARBARA S. LEVY, MD

Dr. Barbara S. Levy is the Vice President, Health Policy and administers ACOG’s Office of Global Women’s Health programs to improve patient safety and quality of women’s health worldwide. Dr. Levy also supervises The Alliance for Innovation on Maternal Health program (AIM), Voluntary Review of Quality of Care, Safety Certification for Outpatient Practice Excellence for Women’s Health, American Indian/Alaska Native Health Program, Health Economics, Strategic Health Care Initiatives department and programs for Maternal Mortality and Fetal & Infant Mortality.  Dr. Levy has been a member of the American Medical Association/Specialty Society Relative Value Scale Update Committee (RUC) since 1999 and in 2015 she completed serving two consecutive terms as Chair of the RUC.  The RUC is an expert panel of volunteer physicians and providers that issues recommendations to CMS regarding the relative work and direct practice expenses required to perform medical services.   Before joining ACOG, Dr. Levy was in private ob-gyn practice and medical director of the Women's Health and Breast Center and Women's and Children's Services for the Franciscan Health System in Tacoma, Washington. Recognized in 2015 by Modern Healthcare magazine as one of the 50 Most Influential Physician Executive and Leaders, she has published and co-authored more than 80 studies and articles related to her primary research interests: hysterectomy, endoscopic surgery, pelvic pain, surgical outcomes, and physician payment policy.  Dr. Levy graduated magna cum laude with an undergraduate degree in psychology from Princeton University and received her medical degree from the University of California, San Diego, followed by an internship and residency in ob-gyn at University of Oregon Health Sciences Center (now Oregon Health & Sciences University) in Portland.


Warren Look, CPA, MBA became Chief Financial Officer in March 2016. In this role, he is responsible for all financial matters of ACOG and its affiliate districts, including accounting and budget creation. Warren joined ACOG as Controller in 1998. Prior to joining ACOG, Warren worked in a variety of health care settings. He received his undergraduate degree in commerce from Washington and Lee University and holds an MBA with a concentration in Finance and Investments from George Washington University.



Rick Robinson, CPA, MBA, joined ACOG in October 2015 as the inaugural Chief Operating Officer. He sets strategic priorities and refines the organization’s operating structure to deliver those priorities efficiently and effectively. In this role, he also oversees Membership, Compliance, the Resource Center, and Facilities. Prior to his arrival at ACOG, Rick was a management consultant with PwC, working with Fortune 500 companies in the retail and consumer products sectors such as Nordstrom, Staples, JM Smucker and 7-Eleven. While there, he led broad, cross-functional teams to refine market strategies and retool key processes, working with a diverse set of stakeholders to create alignment, accountability, and results. Also, Rick previously spent more than eight years working in health care with The Carter Center in Atlanta, leading finance and administration for its international health programs as they expanded operations in Africa and Latin America. Rick holds an MBA in Finance from the Wharton School at the University of Pennsylvania, and is a certified public accountant.

Christopher M. ZahnCHRISTOPHER M. ZAHN, MD

Dr. Christopher M. Zahn is the Vice President, Practice Activities. A retired Air Force Officer and member of ACOG’s Armed Forces District, he received his medical degree from Uniformed Services University of the Health Sciences and is a specialist in comprehensive obstetrics and gynecology who has been practicing for 29 years. Before joining ACOG, Dr. Zahn was Professor and Chair of Obstetrics and Gynecology at the Uniformed Services University of the Health Sciences (USUHS), and a staff physician in the Departments of Obstetrics and Gynecology and Pathology at Walter Reed National Military Medical Center in Bethesda, Maryland. He was also the Program Director of the Uniformed Services Residency in Obstetrics and Gynecology, a maximally accredited tri-military Service residency in Obstetrics and Gynecology, under the auspices of the National Capital Consortium at USUHS. Dr. Zahn has also been a member of the ACGME Review Committee for Obstetrics and Gynecology, and is currently a member of the Board of Directors of the American Board of Obstetrics and Gynecology.

American College of Obstetricians and Gynecologists
409 12th Street SW, Washington, DC  20024-2188 | Mailing Address: PO Box 70620, Washington, DC 20024-9998