William R. Sullivan

William Sullivan

Contact Information

Email Address bills@millcreeklaw.com
Phone Number 425.742.4545
Fax Number 425.745.6060
Address 4220 132nd Street SE
Suite 201
Mill Creek, WA 98012
Website URL http://www.millcreeklaw.com

Practice Information

Name of Practice Marsh Mundorf Pratt Sullivan + McKenzie, P.S.C.
Type(s) of Practice Area(s)

Family Law

Types of ADR services provided Mediation - Settlement Conference
Cost $325/hr.
Years of experience actively practicing ADR 27



I have practiced law for over 25 years in Snohomish County. I am a member of the Snohomish County Bar Association the Washington State Bar Association and the Washington State Trial Lawyers Association. I have served as a member of the Snohomish County Bar Association Board of Trustees and on various Sections and Boards of the Washington State Bar Association. I have also served as a Judge Pro Tem Court Commissioner Pro tem, and as an arbitrator in the Snohomish County Superior Court since 1986. My practice has focused upon civil trial work, including litigation in the areas of dissolution, personal injury, business, and real estate. I have established a significant mediation practice where I try to assist parties in arriving at amicable agreements to resolve their disputes. When not practicing law, I ski, Bike and golf. While recovering from various sports injuries, I also make it a point to watch as many football games of my alma mater, Notre Dame, as I can.


1973: University of Notre Dame, Notre Dame, Indiana:
B.S. Pre Professional Science Major
1977: Loyola University Law School, Los Angeles, California: J.D.
1984: Diplomat of Willamette University College of Law, Trial Advocacy Program


• MARSH MUNDORF PRATT SULLIVAN + McKENZIE, P.S.C., 16504 9th Avenue S.E., Suite 203, Mill Creek, WA 98012; Principal: 1991 to present
• SULLIVAN, GRAAFSTRA, TWISSELMAN & DUPUIS, INC., P.S., 2828 Colby Avenue, Suite 305, Everett, Washington; Principal: 1987 to 1991
• SULLIVAN, GRAAFSTRA & TWISSELMAN, 2828 Colby Avenue, Suite 305, Everett,Washington; Partner: 1985 to 1987
• WILLIAMS, NOVACK & HANSEN, Everett, Washington; Associate: 1978 to 1985
• SCHELL & DELAMER, 1200 Wilshire Blvd., Los Angeles, California; Law Clerk: 1975 to 1977


• Judge Pro Tem, Snohomish County Superior Court; 1986 to 2008
• Court Commissioner Pro Tem, Snohomish County Superior Court; 1986 to 2008
• Arbitrator, Snohomish County Superior Court; 1986 to present
• Mediator; 1987 to present

• 2007 Attorney of the Year – WSBA Family Law Section
• 2006 Clerk’s Choice “Pro Tem Jurist” Award – Snohomish County Superior Court Clerks
• 1999 YMCA Policy Volunteer of the Year
• Martindale Hubbell AV Peer Review Rated


• Contributor to W.G. Bassett, Washington Civil Trial & Evidence Manual (3rd ed. 1989)


• Washington State Bar Association (WSBA): 1978 to present; including Litigation and Family Law Sections
• Federal Bar Association, Western District of Washington.: 1978 to present
• Snohomish County Bar Association (SCBA): 1978 to present
• Washington State Trial Lawyers Association: 1985 to present; including Family Law Section


• Snohomish County Bar Assn. Board of Trustees: 1993 to 1999
• Present Member of WSBA Fee Arbitration Board
• Present Member of WSBA Editorial Advisory Committee
• Present Peer Counselor in WSBA Lawyer Assistance Program
• Past Board Member of WSBA Court Rules Committee
• Past Committee Member of various SCBA Committees
• Chairman and Speaker at WSBA, SCBA, and NWWLC CLE Seminars
• Volunteer for Snohomish County Legal Services
• Member of Snohomish County Bar Assn. Alternative Dispute Resolution Section


• YMCA of Snohomish County, Everett Family Branch; Member of Board of Directors and Chair of Health & Fitness Committee: 1994 to 2001
• Lake Stevens Education Foundation; Member and Officer of Board of Directors: 1993 to 1996
• Glenwood School Improvement Team; Member: 1993 to 1995
• Lake Stevens School Board Director: 1989 to 1993
• Snohomish County Big Brothers/Big Sisters; President and founding member, Board of Directors: 1985 to 1989
• Family Counseling Service of Snohomish County; Member of Board of Directors: 1987 to 1989
• Sno Isle Vocational Center; Board Member Re: Dental Assistance Program for Elementary School Children
• Speaker in Adult/Community Education Programs at Lake Stevens, Everett, Mukilteo, Snohomish, and Lakewood School Districts: 1983 to 1993
• Speaker in Divorce Clinic sponsored by Family Counseling Service: 1989 to 1990
• Participant as Team Captain and Division Leader in Fund Raising Drives for YMCA: 1982 to1984; 1990 to 1991; 1995 to 2000
• Participant in building Lake Stevens Community Playground
• LSJAA Soccer Coach: 1995 to 2001