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About Our Clinic
Peninsula Medical Associates is a boutique occupational and aerospace medicine clinic located in downtown San Mateo, exclusively serving professionals, injured workers, and clients referred for medical-legal evaluations across the Bay Area.
We deliver personalized, efficient care with minimal wait times—combining modern digital workflows with direct communication and customized attention. Our clinic is designed to streamline complex healthcare needs without hassle.
Our Mission
At Peninsula Medical Associates, we care for people at the intersection of health, work, and life.
Whether someone is recovering from a workplace injury, seeking medical clearance to continue their profession, or navigating a complex medical-legal process, our mission is to provide thorough, thoughtful, and compassionate care that helps them move forward—with clarity, dignity, and support.
We’re here to restore function, reduce uncertainty, and serve as trusted guides for patients, employers, and the systems around them.
Meet Our Team
Zaw Maung
MD, MPH
Board-Certified in Occupational Medicine and Addiction Medicine | FAA Aviation Medical Examiner | HIMS AME | QME
Dr. Maung is a dual board-certified physician specializing in occupational and addiction medicine. He completed his residency at Johns Hopkins University and holds a Master of Public Health degree, with advanced training in injury prevention, workplace health, and addiction care.
Dr. Maung provides specialized medical evaluations for commercial drivers, airmen, and injured workers, including FAA flight physicals, DOT/CDL exams, QME and IME evaluations, fitness-for-duty assessments, and addiction medicine consultations. As a certified HIMS AME, he also supports pilots and air traffic controllers in the FAA special issuance process.
Known for his clarity, thoroughness, and commitment to evidence-based care, Dr. Maung is a trusted resource for professionals navigating complex regulatory, occupational, and legal requirements.
Lisa Zacharewicz
MD
Occupational Injury Care Specialist
Dr. Lisa Zacharewicz—known affectionately to patients and staff as “Dr. Z”—is a physician who brings old-school heart to modern occupational medicine. With over 30 years of experience dedicated to caring for injured workers, she is known not only for her clinical skill, but for the time she takes to truly listen, understand, and advocate for each person she treats.
Born and raised in the Midwest, Dr. Z brings a grounded, compassionate perspective to her work. She believes that an injury doesn’t happen in a vacuum—and takes into account each patient’s family, background, job demands, and environment when planning care. She’s known for asking the deeper questions, remembering details others might miss, and building long-term trust with patients across industries.
Dr. Z has helped thousands of workers safely recover and return to work—often serving as a trusted guide not only to medical recovery, but through the stress and confusion of the workers’ comp system.
Our Location
Conveniently located at 406 N San Mateo Dr., Ste B, San Mateo, CA 94401
Ready to Get Started?
We know that navigating medical evaluations, injury care, or regulatory requirements can feel overwhelming. At Peninsula Medical Associates, we’re here to make the process straightforward, respectful, and efficient.
Whether you’re:
Booking an FAA or DOT physical
Beginning care for a work-related injury
Coordinating a QME, IME, or fitness-for-duty evaluation
—our team is ready to help.
You can schedule online, call us directly, or reach out with questions. We’ll walk you through what’s needed, what to expect, and how we can help.
