About the firm

Healthcare compliance law, practiced with clarity.

MJ Law, PC was founded to serve the clinicians and healthcare entrepreneurs often underserved by large firms - with an approach that is direct, practical, economical, and deeply informed by the realities of running a healthcare business.

Matthew L. Johnston, Esq., Founder and Principal Attorney at MJ Law, PC

Principal attorney

Matthew L. Johnston, Esq.

Founder & Principal Attorney

J.D., Health Law Study Concentration
CPOM/Stark/AKS/HIPAA Compliance Specialist
Former In-House Healthcare Counsel
Member, San Diego County Bar Association
Member, Los Angeles County Bar Association
Member, State Bar of California
Member, American Bar Association
Member, California Society for Healthcare Attorneys
Member, California Academy of Attorneys for Health Care Professionals
Member, American Health Law Association

With a background spanning healthcare operations and regulatory law, Matthew L. Johnston brings a practitioner's perspective to every client engagement. Having worked alongside numerous clinicians, hospital administrators, and health tech founders, he understands that compliance isn't just a legal obligation - it's the foundation of a trustworthy practice as adherence is precisely what helps practitioners offer outstanding patient care.

"I recognized a glaring gap in reasonable legal resources for practitioners who truly want to operate compliantly, but want to avoid the burdening expense of large healthcare firms better suited to represent the pharma industry or healthcare-tech sector. MJ Law, PC was thus founded to serve these very clinicians and healthcare entrepreneurs often underserved by those large firms focused on institutional clients. My firm's approach is direct, practical, economical, and deeply informed by the realities of running a healthcare business - from the pressures of daily patient care to the complexity of scaling a health tech startup." -MLJ

San Diego beach coastline

Our approach

What sets us apart.

01

Plain language, always

We translate complex regulatory requirements into clear, actionable guidance. No jargon, no unnecessary complexity - just the information you need to make confident decisions.

02

Built for healthcare professionals

We work exclusively in healthcare compliance. That focus means deeper expertise, faster answers, and counsel that understands the clinical and operational context behind every legal question.

03

Proactive, not reactive

The best compliance strategy prevents problems before they start. We help clients build systems and habits that reduce risk over time - not just respond to it when it surfaces.

Let's work together.

Whether you're just starting out or looking to strengthen an existing compliance program, we're ready to help.

Attorney and client handshake in professional consultation