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Margaret Costanzo graduated from the University of Missouri-Kansas City School of Law in 1993. Immediately after law school, Margaret worked as the Assistant Prosecutor in the Municipal Court of Kansas City, Missouri for 17 years. While in the prosecutor’s office, Margaret garnered experience in criminal and civil law. After her stint with the persecutor’s office, Margaret began her career at Mark M. Ferguson, Attorney At Law, LLC. While working here, Margaret continues to specialize in criminal and civil law while also focusing on family law. Margaret is also registered Guardian AD Litem, which allows her to investigate what solutions would be in the best interest of a child, typically seen in divorce or parental rights and responsibilities cases

When not working, Margaret enjoys spending much of her time with her children, as an avid reader in historical fiction.

Bar Admissions

• Kansas Bar Association

• Missouri Bar Association


• Park University

• University of Missouri-Kansas City School of Law