About Us


Superior Insurance Services

Covering approximately 4 counties in northern and central New York, A.T. Matthews and Dier is an independent insurance agency specializing in property and casualty insurance for both individuals and businesses.

We currently operate 2 agencies in Jefferson County under the approved trade names of A. T. Matthews and Dier, located in Watertown, NY, and Timerman Adams Agency in Chaumont, NY.

A.T. Matthews and Dier, a 3rd-generation, family owned business, provides a higher level of service than the competition. We offer over 30 years of experience and more than 100 years of combined experience. 

Call 315-782-2020 today.

Growing Over the Past Decade

In April of 2000, we purchased a long-established insurance agency in Watertown called A.T. Matthews & Son Inc. As the agency grew, more insurance carriers were added to the lineup of companies available and we were able to offer our customers more viable options. 

In the summer of 2009, the Timerman Adams Agency was purchased when a long-term associate, Jerry Adams, retired and sold his book to Douglas Dier. 

Today, the agency continues to grow and reach customers throughout northern and central New York.

Fast and Efficient Service

For the past 14 years, we have operated in a “paperless” environment, where we can offer real-time service to clients and do it quickly, accurately, and effectively. 

Our digital access allows us to provide a higher level of service with much greater transactional efficiency in document storage, retrieval, and file notation.

Like all our agency objectives, automation is a part of the means by which we strive to provide our customers with better overall service. 

Through the years, we have worked to develop excellence in all areas of our agency operation. Our service goals and objectives have guided our initiative and are the premise from which we looked to top our competition.

Updated Systems Protect Your Data

In February of 2008, we enhanced our document management and retrieval ability with a new and upgraded agency management system called AMS 360 online. 

Our system provides for easier indexing, additional storage, and faster retrieval of scanned and electronic images. It is backed up at an off-site location by Vertafore, the parent company of AMS 360.


Electronic Manuals Improve Service

A.T. Matthews and Dier has gone to great lengths to standardize our workflow and to establish comprehensive procedures and practices.

Standardized, interactive electronic manuals assist us in our daily operations and also give us a format for initial training of new employees.

They are our constant reference tool and provide us with quick and accurate information that let us serve you better.

secured data

Secure Data Protects Your Information

We practice strict adherence to our Information Security Program, which is outlined in our Privacy Program and targets several goals.
  • Safeguard our customer information and confidentiality
  • Protect against reasonably anticipated cyber threats
  • Protect against unauthorized access to or use of information that could negatively impact any customer


Companies We Represent

A. Central Insurance
1899 Central Plaza East Suite 200
Edmeston, New York 13335-1898

American Modern
P.O. Box 5353
Cincinnati, OH 45201-5353

Central Co-Op Insurance Co.
P.O. Box 539
Baldwinsville, New York 13027

Cincinnati Insurance
P.O. Box 145496
Cincinnati, OH 45250-5496

Dryden Mutual
P.O. Box 635
Dryden, NY 13053-0635

Erie Insurance Group
100 Erie Insurance Place
Erie, PA 16530

Erie and Niagara Insurance
P.O. Box 9062
Williamsville, NY 14231-9062

Foremost Insurance
P.O. Box 0915
Carol Stream, IL 60132-0915

Main Street America Group
P.O. Box 2004
Keene, N.H. 03431

Midstate Mutual
P.O. Box 520
Auburn, NY 13021

National General Insurance
P.O. Box 1050
Winston-Salem, NC 27102

NY Central Mutual
1899 Central Plaza East
Edmeston, NY 13335-1899

Peerless Insurance
P. O. Box 2051
Keene, NH 03431

Preferred Mutual
P.O. Box 888
Norwich, NY 13815

P.O. Box 4640
Carol Stream, IL 60197-9601

P.O. Box 3967
Peoria, IL 61615

P.O. Box 6476
Carol Stream, IL 60197-6476M

P.O. Box 660307
Dallas, TX 75266-0307

Utica National
P.O. Box 6532
Utica, NY 13504-6532

at 636 Coffeen Street 
or call 315-782-2020
to get full insurance coverage
Open from 8:30 am to 5:00 pm,
Monday through Friday

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