I think one in most major cities, may be more this list may not be upto date but a place to start - good luck!!!
Arizona
Mayo Clinic Scottsdale
Scottsdale, Ariz.
(800) 446-2279
California
University of California, San Diego
Wm. K. Warren Medical Research Center for Celiac Disease
La Jolla, Calif.
(858) 822-1022
Stanford University Hospital
Celiac Sprue Clinic
Stanford, Calif.
(650) 723-6961
Florida
Mayo Clinic Jacksonville
Jacksonville, Fla.
(904) 953-0853
Illinois
The University of Chicago
Celiac Disease Center
Chicago
(773) 702-7593
Rush University Medical Center
Adult Celiac Disease Program
Chicago
(312) 942-5861
Iowa
University of Iowa Hospitals and Clinics
Celiac Disease Clinic
Iowa City, Iowa
(319) 356-3792
Maryland
University of Maryland School of Medicine
Center for Celiac Research
Baltimore
(410) 328-6749 or (800) 492-5538
Massachusetts
Beth Israel Deaconess Medical Center
Celiac Center
Boston
(617) 667-2135
Minnesota
Mayo Clinic
Rochester, Minn.
(507) 538-3270
New Jersey
Englewood Hospital and Medical Center
Pediatric Celiac Center
Englewood, N.J.
(201) 894-3690
Saint Barnabas Health Care System
The Kogan Celiac Center
West Orange, N.J.
(973) 322-7272
New York
New York Presbyterian Medical Center
Celiac Disease Center at Columbia University
New York
(212) 342-4529
Pennsylvania
Children’s Hospital of Philadelphia
Center for Celiac Disease
Philadelphia
(215) 590-1000
Wisconsin
Medical College of Wisconsin
The Bonnie Lynn Mechanic Celiac Disease Clinic
Milwaukee
(414) 607-5280
http://celiacdisease.about.com/od/resourcesforceliacs/a/Centers.htm