Nicholas A. Pietrzak, MD ... Atrium Health Navicent Piedmont Macon Medical Ctr. Piedmont Macon North Hospital. BOARD CERTIFIED. Dr. Pietrzak is Board Certified in Family Medicine by the American Board of Family Medicine and has been practicing since 1999. ... Wed 8:30am - 5:00pm. Thu 8:30am - 12:00pm. Fri 8:30am - 5:00pm Lunch 12:30 - 2:00 ....