John D Oltman Sr List of directors and agents named John D Oltman Sr. Found 2 results. SR. JOHN D. OLTMAN Registered Address: RT 4 BOX 489 BERLIN MD 21811 Appointed in one company. Go To Profile JOHN D. OLTMAN SR. Registered Address: 9846 MAIN STREET BERLIN MD 21811 Appointed in one company. Go To Profile