Page ContentImportant Contact InformationBack to Frequently Asked Questions 7. I have selected the Kelsey-Seybold Greater Houston Plan. Who should I contact when I have questions?You should call your Kelsey-Seybold Concierge at 713-442-7455 (SHLL) or toll free 1-844-729-1219 for questions about appointment scheduling, participating physicians, clinic locations, and services. Contact the Customer Service Line at 1-855-279-1509 for questions about benefits, claims, Transition of Care, the Cigna Guest Privileges program (for family members residing temporarily in another network location), or for mental health/substance abuse care needs. Questions about eligibility, enrollment, or premium contributions should be directed to the Shell Benefits Service Center at 1-800-30-SHELL (1-800-307-4355).