Independent medical opinions
Clear, evidence-based opinions addressing disability, causation, impairment, and complex internal medicine questions.
Gregg M. Rader Sr., MD, PLLCClinical Evidence ReviewMedical-Legal ServicesRequest a consultationCertified by NBPAS
Independent medical opinions and rigorous record review for veterans, attorneys, agencies, and families navigating complex claims.
A careful approach
Every review begins with the relevant clinical record and ends with a plain-language, well-supported opinion. The work is designed to help decision-makers understand the medicine, the evidence, and the issues at hand.

Physician-led review
Dr. Rader is Certified by NBPAS in internal medicine and has more than 30 years of clinical experience, military service, and eight years caring for veterans at the U.S. Department of Veterans Affairs in Knoxville.
He is the author of VA Disability Compensation and Medical Nexus and Post-Traumatic Stress Disorder: Comprehensive Reference Manual. View the books.
Meet Dr. RaderServices
Clear, evidence-based opinions addressing disability, causation, impairment, and complex internal medicine questions.
Detailed chronology and analysis that turns extensive medical records into concise, understandable clinical findings.
Independent review and nexus opinions addressing direct service connection, secondary conditions, aggravation, exposure, and residual impairment.
At least as likely as notFocused analysis of occupational and environmental exposures for Department of Energy and other workplace illness claims.
At least as likely as notObjective examinations and written findings tailored to the referral question and accepted clinical standards.
Consultation, reports, depositions, and trial testimony communicated with clarity and professional independence.
Our standard
An opinion is never guaranteed. Conclusions are based on the available medical evidence and accepted clinical reasoning.
Referral process
01 · Initial inquiry
Share the referral question, jurisdiction, deadlines, and parties for conflict review—without protected health information.
02 · Scope & engagement
Confirm the materials, requested work product, timing, and terms.
03 · Secure transfer
Provide records only through the approved secure channel after engagement.
04 · Review & opinion
Receive clear communication, a thorough analysis, and the agreed deliverable.
consults@ClinicalEvidenceResearch.com · 865-755-5171 · 301 S Peters Road, Knoxville, Tennessee 37923
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