New Search William Henry Johnson M.D. (301) 791-7300 Department Medicine Specialty Nephrology Primary Office Address: Kidney Center of Frederick & Hagerstown 140 Thomas Johnson Drive Suite 202 Frederick, MD 21702 Phone: (301) 791-7300 Secondary Office Address: 246 N. Eastern Blvd Suite 101 Hagerstown, MD 21740 Recommend this Physician Get Directions Education Medical School - American University of the Carribean Internship - Mount Vernon Hospital Fellowship - New York Medical College Board Certifications National Board of Physicians and Surgeons American Board of Internal Medicine