James Duncan

Cincinnati, OHAdmitted 2019

About James Duncan

J. Tanner Duncan is a Cincinnati native who fights tirelessly for his clients in criminal defense matters in both Ohio and Kentucky. He has handled everything from high-level felonies carrying life sentences to misdemeanors and traffic citations. Tanner has defended murder cases, shooting cases, sex crimes, DUI/OVI matters, domestic violence, and more. While other attorneys shy away from trial, that is where Tanner thrives, and he takes each case personally while keeping clients informed of the consequences that a criminal conviction can carry.

Proven verdicts and settlements at Rittgers & Rittgers

These results are credited to Rittgers & Rittgers. A result appears under an attorney's own name only when a published source names them as counsel on the case.

$10 millionVerdict

A Cincinnati jury awarded $10 million on May 1, 2026, after finding that TriHealth's Good Samaritan Hospital placed 69-year-old Terri Price in a psychiatric unit instead of a medical unit, leaving her without the nursing care and IV antibiotics needed to treat her advancing sepsis.

Hamilton County Common Pleas Court, Cincinnati, OH · 2026Medical MalpracticeRead the full story →
$3 millionVerdict

A Hamilton County jury found JACK Cincinnati Casino 100% liable after a 69-year-old patron tripped over a collapsed wet-floor sign that a casino employee had walked past seconds before the fall, fracturing her kneecap and requiring surgery.

Hamilton County Common Pleas Court, Cincinnati, OH · 2019Premises LiabilityRead the full story →
Verdict

A Warren County jury acquitted Brooke Skylar Richardson on all serious charges, including aggravated murder and involuntary manslaughter, after Charles H. Rittgers and Charles M. Rittgers convinced jurors the newborn had been stillborn.

Warren County Common Pleas Court, Lebanon, OH · 2019Read the full story →

Prior results do not guarantee a similar outcome. Each case is unique and depends on its own facts.

Education

Northern Kentucky University, Salmon P. Chase College of Law
J.D.
University of Cincinnati
Undergraduate

Bar admissions & credentials

State Bar of Ohio, admitted 2019
State Bar of Kentucky, admitted 2021

Other attorneys at Rittgers & Rittgers

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Proven verdicts and settlements from other Cincinnati firms

Markovits Stock & DeMarco
Markovits Stock & DeMarco
$742 Million Recovery for 23,000 Navistar Retirees in Decades-Long ERISA Benefit Fight
Lawrence, Beirne & Lewis
Lawrence, Beirne & Lewis
$30.95 Million Ohio Birth Injury Verdict Against Miami Valley Hospital After Uterine Rupture During Labor

Prior results do not guarantee a similar outcome. Each case is unique and depends on its own facts.