Locations

Cornerstone’s headquarters is in Middletown, New York. We serve clients across the U.S. from a network of regional offices.

Arizona

17 W. Wetmore Road, Suite 310
Tucson, AZ 85705
Toll Free: (877) 633-5520
Fax: (520) 888-4804
Contact: Garth Bowers

California

7600 Dublin Boulevard, Suite 200
Dublin, CA 94568
Toll Free: (877) 633-5520
Fax: (925) 560-9879
Contact: Paul Stout

Illinois

400 Quadrangle Drive, Suite E
Bolingbrook, IL 60440
Toll Free: (877) 633-5520
Fax: (630) 378-2640
Contact: Chris Peters

Michigan

39395 W. Twelve Mile Road  Suite 103
Farmington Hills, MI 48331
Toll Free: (877) 633-5520
Fax: (248) 994-5456
Contact: Adam Larky

New Jersey

53 Edgeboro Road
East Brunswick, NJ 08816
Toll Free: (877) 294-9070
Fax: (845) 692-5894
Contact: Mark Swyka

New York

542 State Route 29
Greenwich, NY 12834
Toll Free: (877) 294-9070
Fax: (518) 692-9651
Contact: Curt Taylor

Corporate Office
90 Crystal Run Road, Suite 201
Middletown, NY 10941
Toll Free: (877) 294-9070
Phone: (845) 695-0200
Fax: (845) 692-5894
Contact: Mark Swyka

1200 Scottsville Road
Building C, Suite 120
Rochester, New York 14624
Toll Free: (877) 294-9070
Fax: (585) 563-6582
Contact: Rob Holmes

Ohio

10012 International Boulevard
Cincinnati, OH 45246
Toll Free: (877) 633-5520
Fax: (513) 870-0610
Contact: Bruce Schmucker

12888 Grey Street
Logan, OH 43138
Toll Free: (877) 633-5520
Fax: (740) 380-6128
Contact: Kyle Nay

Pennsylvania

329 Gordon Drive
Exton, PA 19341
Toll Free: (877) 294-9070
Fax: (845) 692-5894
Contact: Mark Swyka

Wisconsin

8413 Excelsior Drive, Suite 160
Madison, WI 53717
Toll Free: (877) 294-9070
Contact: Mark Torresani

435 East Mill Street, Suite 3
Plymouth, WI 53073
Toll Free: (877) 294-9070
Fax: (920) 893-9430
Contact: Mark Torresani