
Read More About Our Attorneys and Our Firm's Approach to Representing You
About Us
Representing Clients Throughout Arizona and New Jersey
Ambrosio & Tomczak, Attorneys at Law offers comprehensive legal services to individuals, families, and businesses in Scottsdale, Phoenix, and across Maricopa County. Our services range from handling business matters, from startup law to complex commercial litigation involving multinational corporations. We bring extensive professional experience to your case, whether you’re facing a family dispute involving probate or commercial litigation involving contracts, a business dispute, regulatory compliance, or other intricate issues.
Our attorneys are trial-tested and have served as lead counsel in jury and non-jury trials, countless evidentiary hearings, and numerous appeals in civil and criminal matters. Attorney Tomczak is a former New Jersey prosecutor with insider knowledge of how prosecutors prepare and prosecute their cases.
Our team has represented clients in partnership and contract disputes, fraud allegations, and more from initial investigations through trials in state and federal courts.
Click below to learn more about the backgrounds, experience, and qualifications of our partners, John T. Ambrosio and Gregory E. Tomczak.

Your Partner in Growth
Solutions Tailored to Your Business
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We focus on creating strategies tailored to your specific goals, offering dedicated service that adapts to your unique needs.
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Greg Tomczak brings a prosecutor’s insight and tenacity to every case, using his knowledge of government tactics to your advantage.
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We approach every case as though it’s headed for trial, ensuring a strong position for negotiation or courtroom proceedings.
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Our team handles intricate legal matters with precision and determination, whether managing disputes, investigations, or litigation.
Why Choose Ambrosio & Tomczak, Attorneys at Law
Our firm puts highly experienced attorneys on your side who can help you navigate complex business and corporate law matters, including regulatory compliance, dispute resolution, and formal litigation.
We provide strategic responses to protect your rights and reputation during high-stakes government investigations, negotiate with agencies, and develop defense tactics. Our team brings impressive experience in fighting white-collar criminal allegations, including fraud and identity theft.
We also guide startups through legal challenges, such as business formation, intellectual property, and contacts designed to avoid costly mistakes. As outside general counsel, we can provide ongoing legal support for small and midsize businesses, managing contracts, employment matters, and risk mitigation acting as strategic advisors.
We add value as long-term partners, helping businesses to avoid unnecessary legal issues, defend against false allegations, and grow in a complex world. If you need advice, guidance, or representation, we urge you to discuss your needs with one of our attorneys to learn more about how we can assist you.
Call (602) 207-8672 or contact us online to consult a Scottsdale lawyer about your legal concerns today.
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“Greg Tomczak saved my estate case from being a loser to becoming a winner! I thank you, Greg, from my soul for saving my case and financial life!”Conley P.



