Our Attorneys

Timothy McCarthy II has represented those accused of crimes in Iowa for more than three decades. He is licensed to practice in all Iowa state and federal courts. McCarthy holds both a Bachelor of Arts degree and Juris Doctor from Drake University in Des Moines. He has taught both law students, at the Drake University Law School, and lawyers, as a speaker at various criminal defense seminars.

Read more about Timothy McCarthy II

Aaron Hamrock has been licensed to practice law in Iowa since 1995. He represents both those facing criminal charges and those seeking compensation for personal injuries. He is licensed in all Iowa state and federal court. He received a Bachelor of Arts at Central College and went on to earn a Juris Doctor at Drake University Law School.  

Read more about Aaron Hamrock

Matthew Knipe began working at McCarthy & Hamrock in 2013 and has developed an appreciation and passion for Criminal Defense. He advocates tirelessly for his clients and works diligently in search of results beneficial to his clients.  he recognizes the adversity criminal defendants are up against and is adamant about assisting clients throughout the stages of criminal proceedings from the time of arrest until disposition of the case.

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Tom Fowler fights for clients who are facing criminal charges in the state of Iowa. He also passionately advocates for clients who have suffered personal injuries due to the actions of others. Tom is committed to providing the best results possible to any client he represents.  Tom is an Iowa native who great up in the town of Sigourney.

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Rob joined McCarthy & Hamrock in 2016 as a Law Clerk and later was brought on as an Associate Attorney in September of 2018.  He is devoted to aggressively defending his clients’ rights when they face criminal charges.  Rob understands the importance of keeping his clients apprised of every aspect of their case so that they can make an informed decision on how to move forward in their defense.

Read more about Rob Larson


Meet the Staff

Mackenzie joined the firm in December of 2011.  She grew up in Dows, Iowa.  Mackenzie later attended the University of Northern Iowa where she graduated with a Bachelor of Arts Degree in Family Services.  Mackenzie is a highly valued and devoted member of the McCarthy & Hamrock team.  She has several different job descriptions within the firm.  Mackenzie communicates with almost all of the firms’ clients on a monthly basis in addition to handling the day to day operations of the office. 

Read more about Mackenzie Mossman

Megan joined the firm in April of 2018. She was born and raised in Des Moines, IA. She attended Grand View University in Des Moines where she graduated with double majors in Psychology and Criminal Justice. At McCarthy & Hamrock, Megan is a valued employee who has many different responsibilities which include everything from opening the office for business to answering the many phone calls that come into the firm.

Read more about Megan Newell

Amanda joined the firm in September of 2013. She grew up in Manly, Iowa. Amanda later attended the University of Northern Iowa where she graduated with a Bachelor of Arts degree in Graphic Communications. Amanda is a highly valued and dedicated employee who takes pride in her work and also enjoys communicating with a number of the firm’s clients.

Read more about Amanda Neff

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Our Office

1200 Valley West Drive
Suite 400
West Des Moines, IA 50266
Map and Directions

Proud Members Of

National Association of Criminal Defense Lawyers National College for DUI Defense Iowa State Bar Association National Organization for the Reform of Marijuana Laws


" Aaron, words cannot begin to tell you how appreciative I am of you/your firm, for all you did in my legal matter these past few months. Today was a great day. I think you for your professionalism/tenacity in getting my case suppressed/dismissed! Thank You Very Much. "


" I want to again thank you both for the deft, calm and professional manner in which you handled my case. Legal competence is often lacking these days, but you folks are truly skilled in representing a client, at least in my book. You made a potentially horrible situation bearable. I would highly recommend you to anyone, should that situation present itself. "

-Greg R.

" I just wanted to thank you for representing me in my criminal case. Honestly, I probably wouldn't be where I am if it wasn't for you! So THANK YOU from the bottom of my heart! "

-Jamie H. Read More ›