Our Team:
National Network of Lawyers

SERVING CORPORATE CLIENTS IN ALL 50 STATES

Mach Investigations helps you. You are not a number or case file. You are a real person with a real story.

  • Available Nights & Weekends
  • Experienced and Knowledgeable Attorneys and Consultants
  • We Fight Aggressively for our Clients
  • We Only Charge for Our Services When We Win
  • We Charge Less Than Our Competitors – Guaranteed
Dr. Nick Oberheiden

Founder
Attorney-at-Law

Experts & Consultants (Non-Lawyer)

Roger Bach

Former Special Agent (OIG)

Chris J. Quick

Former Special Agent (FBI & IRS-CI)

Maura Kelley

Former Special Agent (FBI)

Kevin M. Sheridan

Former Special Agent (FBI)

Ray Yuen

Former Supervisory Special Agent (FBI)

Michael S. Koslow

Former Supervisory Special Agent (DOD-OIG)

Dennis A. Wichern

Former Special Agent-in-Charge (DEA)

James J. Hunt

Special Agent-in-Charge (Ret.) DEA New York

Randall C. Till

Former Inspector-in-Charge (USPIS)

Wade A. McFaul

Former Assistant Special Agent-in-Charge (HHS-OIG)

Stephen W. Churchill

Former Assistant Special Agent-in-Charge (DOJ)

Greg S. Muroff

Former Supervising Investigator (Medicaid)

Chris Anderson

Compliance Consultant

NOTICE: All visitors to this Website are informed that Oberheiden Law (“Firm”) affiliates with independent and separate attorneys (“Local Counsel”) and their respective law firms on a case by case basis. If and when this applies to a particular client, we will disclose the details to client in writing for their approval. In some cases, pursuant to Rule 7.04 of the Texas Disciplinary Rules of Professional Conduct and the equivalent in other jurisdictions, a case is referred to a Local Counsel, the Firm will not participate in the representation. In such a case, client will sign an engagement exclusively with the Local Counsel.

Our Team

Impeccable Service

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Nick Oberheiden is the absolute best federal litigation attorney. Nick gives you the immediate comfort of feeling 100% protected. He is polite, respectful— and extremely compelling. His legal strategy turned out to be brilliant.

– Marshall M.

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