Meet our Occupational Medicine Specialists

Members of the Medac Corporate Health Care staff are exceptionally experienced in the specialty of occupational medicine. Not only are they highly skilled on the medical side; they are all very familiar to the particular needs of corporate and municipal entities, as well as their employees. We understand the important business and legal considerations of corporate health, which adds a great deal of value for our clients.

  • Michael Moulton MD, FAAEM

    Medical Director of Medac Corporate Health Services, Dr. Michael Moulton is a board-certified emergency medicine physician with more than 20 years of experience. He received his MD from the University of Texas, San Antonio, and completed his residency at the Medical College of Pennsylvania in Philadelphia. Dr. Moulton has served as President of the North Carolina Medical Society, and has been a Medical Review Officer since 1997. He received MROCC certification and AAMRO recertification, both in 2013.

  • Howard L. Armistead, Jr. MD

    Dr. Armistead received a B.S. in chemistry from Roanoke College and a B.S. in pharmacy from the Medical College of Virginia. After earning his Doctor of Medicine (M.D.) degree from the University of Virginia, he completed his internship and residency at New Hanover Hospital (now New Hanover Regional Medical Center) and retired from family medicine practice in 2000. Dr. Armistead has been working with Medac since 1994.

  • Daniel I. Shapiro PA-C

    Mr. Shapiro is the Director of Medac Corporate Health Services. He graduated from the Touro College Physician Assistant Program in New York City, and received a B.S. in Health Sciences. He has practiced as a board certified physician assistant in emergency medicine and occupational medicine for 35 years and has been with Medac since 1988.

  • Lisa A. Plazzo MD, FAAEM

    Dr. Plazzo received her BS degree from Salem College in Winston-Salem, North Carolina, and her Doctor of Medicine from the University of Virginia School of Medicine, in Charlottesville, Virginia. Dr. Plazzo completed her residency at the Akron City Hospital in Akron, Ohio, and is board certified in Emergency Medicine. Dr. Plazzo not only serves as a physician in our Urgent Care facilities, she also provides Immigration Physicals as a designated Civil Surgeon with the US Citizenship and Immigration Services. Dr. Plazzo has been with Medac since 2009.