About Michael J. Costello

The firm started in the 1930s allegedly by John “Radio Speaker” Stevenson. We have been in continuous existence since that time. John Walthew and Charlie Warner joined the firm in the 1940s. Since at least the 1960s or the 1970s, we were the premiere firm handling workers’ compensation law. One of the oldest and largest for many years.

The Walthew Law Firm

WA - 1996

Award and Honors

Magna Cum Laude - Gonzaga

State Bar Number
Law School
Gonzaga University School of Law
Law School Graduation Date
May 31, 1996
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The Walthew Law Firm
3000 1ST AVE
Seattle, WA 98121
Office: 2066235311 Fax: