Simmons First National Bank Simmons First National Bank was founded in 1903 Pine Bluff, Arkansas by local physician Dr. John Franklin Simmons. Considered as one of the largest financial holding companies based in Arkansas, Simmons First National Bank has over 100 branches in Arkansas, Kansas, and Missouri. • Website – www.simmonsfirst.com • Customer Service Telephone – 1(866)246-2400 • Routing Number –082903293 Simmons Bank Customer Service Telephone (1(866)246-2400) Online Banking Login How to Log In 1. Go to www.simmonsfirst.com. 2. Under…