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About me

Mark Albertson is an Elder Estate Planning Attorney with 25 years of experience. Mark focuses his practice on the legal needs of elder citizens, veterans and families with disabled children. With his comprehensive knowledge of the issues involved in planning for families with special needs children Mark is able to offer parents and guardians the opportunity to share the planning burden.

Mark is and attorney and partner in the firm of Hanis Irvine Prothero, PLLC in Kent Washington.  Hanis is a full-service law firm, and is the largest firm in South King County. 

Formerly, Mark was a psychiatric social worker.  It was his work with the mentally ill that led him to become an Attorney. Mark is Program Counsel for the Washington State Pooled Charitable Trust and advises families nationwide on planning solutions.  He is also an active member of the Academy of Special Needs Planners. Mark was recently recognized as one of Seattle Magazine’s “Best Personal Wealth Managers in the Seattle Area”.

Mark received his bachelor's degree in psychology from the University of Texas at San Antonio in 1982, and his Juris Doctorate Degree from St. Mary's University School of Law in 1987.

Mark is a member of the Washington State Bar Association; Oregon State Bar; American Bar Association; Estate Planning Council of Seattle; Washington Planned Giving Council, National Committee on Planned Giving; National Academy of Elder Law Attorneys.

Mark isChair of the Advisory Board of Seattle Pacific University's Graduate School of Psychology, Family and Community. He is  Past President of the Rotary Club of Southcenter, and is Past President of the Board of Directors, Highline Community Hospital Foundation; Past President, Mediation Consortium of Washington State; former board member of the National Alliance for the Mental Ill, former Trustee, Washington State Bar Association Young Lawyers Division; Board of Directors of the Kent Downtown Partnership and is currently President of the Board of Directors of the Kent Chamber of Commerce.


Practice areas


  1. Estate Planning: 40%
    24 years, 3.5 thousand cases
  2. Elder Law: 30%
    19 years, 750 cases
  3. Guardianship: 15%
    19 years, 2.5 thousand cases
  4. Power Of Attorney: 15%
    2.5 thousand cases



Fixed (sometimes), Free consultation (60 minutes), Pro bono (2%)

Payment types:

Check, Credit card

Attorney endorsements

4 total 

Are you an attorney? Endorse this lawyer

  • Dennis John Shanlian

    Mark is an outstanding attorney. With his qualifications and experience, he is the prominent professional for elder law and special needs issues, and estate planning in general. Mark's service and contributions to the community are also exceptional.


    Dennis Shanlian
    Relationship: Co-worker

  • Patrick Michael Hanis

    Mark is a great attorney and does excellent work for his clients. When it comes to estate planning, elder care, guardianships, and other estate plans, Mark is a great resource and helps his clients well. Whether a client needs a standard estate plan, or more complex planning, he serves his clients well.


    Patrick Hanis Estate planning Attorney
    Relationship: Co-worker

Contact info

Hanis Irvine Prothero, PLLC

6703 S. 234th Street
Suite. 300
Kent, WA, 98032


We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
5 Star Wealth ManagerSeattle Magazine2013
5 Star Wealth Manager (5 time recipient)Seattle Magazine2008
Community Involvement AwardBetter Business Bureau2004
Leadership AwardKent Chamber of Commerce2004
Professional Firm of the YearSouthwest King County Chamber1994
Work experience
TitleCompany nameDuration
Executive DirectorCenter for Conflict Management1990 - 1994
Deputy Prosecuting AttorneySnohomish County Prosecuting Attorney1988 - 1990
Association namePosition nameDuration
National Academy of Elder Law AttorneysMember2004 - Present
Estate Planning Council of SeattleMemb1987 - Present
Academy of Special Needs PlannersMember2006 - 2012
Publication nameTitleDate
Jedeye PressCaring for Older Relatives: Legal, Health, Caregiving and Financial Issues with Older Adults2013
All the BunniesFinding a New Home for Allen2009
School nameMajorDegreeGraduated
St Mary's University of San Antonio School of LawLawJD - Juris Doctor1987
University of Texas System, San AntonioPsychologyBA - Bachelor of Arts1982
Speaking engagements
Conference nameTitleDate
Estate Planning and Life InsuranceLife Insurance Trusts2013
Caring for Older AdultsElder Law2013
Estate Planning BasicsEstate Planning Basics2008
Drafting and Administering Special Needs TrustsSpecial Needs Planning2008