Recognized in the industry
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National Association of Criminal Defense Lawyers
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American Bar Association
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The Bar Association of Metropolitan St. Louis
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Missouri Association of Criminal Defense Lawyers
St. Louis Criminal Defense Lawyer
Who will you bring to the fight?
If you or someone you love is facing a criminal charge, trust our law firm to provide the experienced and passionate legal advocacy that you need. At The Hammer Law Firm, LLC, our St. Louis criminal defense attorneys, Mark Hammer and Nicole Chiravollatti, are committed to protecting the rights of our clients.
Why trust our legal team?
- More than 30 years of criminal law experience.
- Former prosecutors who know how the "other side" operates.
- Accessibility and availability – clients can always reach our attorneys.
- Personalized, one-on-one attention.
- Tough negotiators and proven trial lawyers.
Facing life-altering penalties, regardless of the specific charge involved, is an experience of tremendous turbulence and chaos. When your future is on the line, putting proven lawyers in your corner should be your number one priority. At The Hammer Law Firm, LLC, our lawyers will fight for you.
Client
Testimonials
Choosing The
Right Lawyer
The Hammer Law Firm provides tough representation for people facing tough criminal charges. Our St. Louis law firm is committed to pursuing justice for each of our clients and doing whatever it takes to protect their future. View some of our helpful videos to learn more about our firm.
- Prepared for Trial, Prepared for Results
- Teaching at the St. Louis University School of Law
- Representing You During Police Investigations
- State Criminal Cases vs Federal Criminal Cases
- The Experience of Former Prosecutors
- Always Accessible to Answer Your Questions
- Invested in You and Your Future
- Helping You Through the Difficult Times
- Choosing the Right Lawyer for Your Case
Our Firm Can Make the Difference in Your Case
At The Hammer Law Firm, LLC, attorneys Mark Hammer and Nicole Chiravollatti are committed to providing the best legal representation that they can offer. Additionally, our team is dedicated to bettering the local legal community and continually improving our legal practice. Some of our contributions include:
Our Commitment
At The Hammer Law Firm, LLC, attorneys Mark Hammer and Nicole Chiravollatti are committed to providing the best legal representation that they can offer. Additionally, our team is dedicated to bettering the local legal community and continually improving our legal practice. Some of our contributions include:
- Attorneys Hammer and Chiravollatti are adjunct professors at Saint Louis University School of Law, where they teach Criminal Trial Advocacy II to third-year law students.
- Mark was recently named a "Master" with the local American Inns of Court. This is the highest level of membership in the organization.
- Attorney Hammer is "Lead Panel Attorney" for the Eastern District of Missouri's Criminal Justice Act Program. Mark has retained this distinction for the past three years.
- Attorneys Hammer and Chiravollatti are actively involved as volunteers in the ALS Association's fight against ALS (Lou Gehrig's Disease)

Schedule a Free Consultation
Regardless of the charges you face, and no matter the nature of your case, you need to speak with someone who has the experience, passion, and determination to guide you through these troubling experiences. As time is such a crucial matter in strengthening your defense, we encourage you to schedule a free evaluation as soon as possible. Allow our attorneys to explain the charges you face and what we can do to help.
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