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Providers, Management and Staff

Meet Our Providers

All four of your physicians are Board Certified/Eligible indicating specialty training in their fields and all see infants, children and adults.

Lawrence E. Gelber, M.D.
Robert S. Call, M.D.
William T. Hark, M.D.
Margaret Hollister Sigman, M.D.
Deanna W. Tanner, PA-C
David K. Moon, PA-C

View Provider's Biographies

Meet Our Physician's Nurses

RAAS has a unique approach to patient care which includes physicians working with their own nurse to coordinate the care of each patient within our practice. Our professional nursing team is well trained in the specialty of allergy and asthma and you will find our friendly nurses will work one on one with you to provide individualized care and education following your treatment plan created by your physician.

Megan, RN, Dr. Gelber’s nurse/ nursing supervisor
Tiffeny, RN, Dr. Call’s nurse
Grayce, LPN-B, Dr. Hark’s nurse
Phyllis, LPN, Dr. Sigman’s nurse
Beth, RN
Nancy, LPN-B, Deanna Tanner’s nurse

Meet Our Lab Nurses

Our team of lab nurses has over 100 years accumulative allergy and asthma specific nursing experience! Amy Hall, LPN-B, is our lab supervisor, she holds a business degree and has over 15 years of allergy and asthma experience. When you trust your care to us, our lab nurses will treat you with the care you expect.

Karen, RN, lab nurse
Tina, LPN, lab nurse
Jen, LPN, lab nurse
Jennifer, RN, lab nurse
Lillian, LPN, lab nurse
Amy, LPN-B, lab supervisor
CJ, lab assistant
Cappy, RN, lab nurse
Melissa, LPN, lab nurse
Karen, Cappy, Lillian, Jennifer, Tina, Jen, Melissa, Amy, and CJ

Meet Our Management and Business Office Team

Christine Talbot is our office administrator and head of the business office, she keeps this well-oiled machine running. Our business office is available to you for any of your billing or payment questions. They understand the billing process and will be happy to help guide you through insurance issues you may face.

Chase, RAAS mascot
Sydney, administrative assistant
Jaleesa, billing office
Therese, billing specialist
Joyce, bookkeeper
Sydney, Jaleesa, Therese, Joyce

Meet Our Front Office Team

Our front office team members are the smiling faces you see when you arrive. They are here to help with your appointment, paperwork, and any initial questions that you may have.

Christine (office administrator), Amy (lab supervisor), Rosalyn (front office supervisor), Megan (nursing supervisor)
Megan, RN, nursing supervisor
Rosalyn, front office supervisor
Liz, front desk
Randi, shot desk
Shalene, new patient coordinator
Jodi, new patient coordinator
Randi, Shalene, Jodi and Liz