About PPG
We provide clear, defensible medical opinions when they matter most.
Founded in 2003 by Dr. Kevin F. Hanley and Bill Tadlock, Principal Physicians Group, historically and industry known as PPG, is a family-owned leader in independent medical evaluations.
Our team of dedicated, experienced, board-certified physicians delivers high-quality, defensible reports with quick turnaround times, serving plaintiff, defense, insurers, and third-party administrators.
We pride ourselves on direct, responsive communication; no automated phone menus, just real people dedicated to your needs.
“We’ve been using PPG for IME’s for more than 20 years. They are great to work with. Always willing to go the extra mile if needed.”

100 +
100+ years of combined clinical experience across orthopedic surgery and spine care.
10,000 +
patient evaluations completed, including Independent Medical Examinations.
40 +
40+ years serving the Maryland legal and medical community (collectively across the group).
50 +
Academic & Professional Honors (publications, teaching roles, national awards)
The PPG Working Process
A Proven Process for Trusted Medical Opinions
Easy Scheduling
Streamlined convenient scheduling with quick turnaround times.
Expert Physicians
Board Certified Independent Medical evaluators.
Cost-Effective Solutions
Transparent, competitive high quality reports.
Trusted Reports
Clear, reliable and defensible expert opinions.
FAQ’s
Frequently Asked Questions
01. How is PPG different from other IME Companies?
Principal Physicians Group differentiates itself by offering evaluations performed by actively practicing, board-certified physicians who combine clinical expertise with experience in legal settings. Their reports are designed to be clear, timely, and defensible, making them reliable tools for insurers, attorneys, and employers.
02. How do I schedule an appointment?
(1) Use Our Easy Scheduling Form — Submit your request online anytime.
(2) Call Us Directly — Speak with our administrative staff at (410) 451-2600 for personalized assistance.
Meet Some of Our Physicians

Dr. Kevin Hanley, M.D.
Othopaedic Surgeon; Medical Director, PPG

Dr. John C. Barry, M.D.
Orthopaedic Surgeon

Dr. David Lumsden, M.D.
Orthopaedic Surgeon

Dr. Marina Pulini-Franks, M.D.
Internal Medicine & Rheumatology













