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Michael F Callahan

About Me

Michael F. Callahan, formerly with the Internal Revenue Service, has practiced family law in Maryland, Virginia and the District of Columbia for over twenty years. He has been counsel in over fifty contested divorce hearings and has settled hundreds of divorce cases.

He received his Juris Doctor from Georgetown University in 1987, and his Bachelor of Science in Marketing from University of Illinois at Chicago in 1974. Mr. Callahan is a member of the Georgetown Chapter of Order of the Coif.

He has co-written two books on divorce law for consumers and various professional articles; Mr. Callahan has lectured on divorce and the tax aspects of divorce.

He has been named among the top lawyers and top divorce lawyers by Washingtonian Magazine and Maryland Super Lawyers.


Practice Areas


  1. Divorce & Separation: 30%
    22 years, 300 cases
  2. Family: 25%
    22 years, 200 cases
  3. Child Custody: 20%
    22 years, 100 cases
  4. Wills & Living Wills: 15%
    28 years, 150 cases
  5. General Practice: 10%
    28 years, 500 cases



Hourly ($300-390/hour)

Payment Types:

Cash, Check, Credit Card

Attorney Endorsements

5 total 

  • Christian K. Lassen II

    Top-notch attorney. Highly respected in the legal community.


    Christian Lassen Personal Injury Attorney
    Relationship: Fellow lawyer in community

  • Rebecca Janet Wade

    Mike is a tough negotiator but always professional, ethical, and respectful. I endorse this lawyer.


    Rebecca Wade Criminal Defense Attorney
    Relationship: Opposing Counsel on matter

Contact Info

Thyden Gross & Callahan, LLP

4601 Willard Ave
Chevy Chase, MD, 20815


DCActive 198805/25/2015
VAAuthorized to practice law198703/11/2014

Professional Misconduct

We have not found any instances of professional misconduct for this lawyer.
Avvo Contributions
Legal Answers
Award NameGrantorDate Granted
BV RatedMartindale-Hubbell2014
Super LawyerSuper Lawyers2008
Top LawyerWashingtonian Magazine2004
Work Experience
TitleCompany NameDuration
PartnerPartThyden Gross & Callahan, LLP1992 - Present
Association NamePosition NameDuration
Arlington County Bar AssociationMember2005 - Present
Montgomery Bar AssociationMember1993 - Present
Order of the Coif - Georgetown ChapterMember1988 - Present
Legal Cases
Case NameOutcome
Smith v Smith, 996 A.2d 416; 193 Md.App 29; 2010 Md. App. LEXIS 92 (2010)We won. The Court of Special Appeals agreed with our argument that the pay was marital property and sent the case back to the trial court to rule on the division of the pay.
See all Legal Cases 
Publication NameTitleDate
Amazon KindleFile your own Virginia Divorce2011
Thyden Gross and Callahan, LLPDivorce and Money Blog2011
Sphinx PublishingFile for Divorce in Maryland, Virginia and the District of Columbia, (2nd Ed.)Sp2006
Sphinx PublishingMoney and Divorce2006
Sphinx PublishingFile for Divorce in Maryland, Virginia and the District of Columbia2003
School NameMajorDegreeGraduated
Georgetown University Law CenterLawJD - Juris Doctor1987
University of Illinois, ChicagoMarketingBA - Bachelor of Arts1974
Speaking Engagements
Conference NameTitleDate
Divorce 101DIvorce Law2014
CLE - Successful Financial Settlements for Your Divorce ClientDivorce Taxation2007