Atty. Dennis Jay Sherwin

Atty. Dennis Jay Sherwin

Dennis Jay Sherwin is a lawyer practicing personal injury, insurance bad faith, discrimination claims and 1 other area of law. Dennis received a B.A. degree from California State University, Northridge, and has been licensed for 54 years.

Ontario Ontario 54 yrs experience 54 year
Call (279) 260-5479 Book Appointment

Profile Summary

About Dennis Jay Sherwin at a glance

Dennis Jay Sherwin is a Partner based in Ontario, California, practicing at Rose, Klein & Marias LLP. They have 54+ years of legal experience, licensed to practice since 1972. Their practice focuses on personal injury, litigation, civil rights, and insurance. Admitted to practice in California (1972) and U.S. District Court, Central District of California (1973). Educated at Loyola Marymount University (J.D., 1972) and California State University, Northridge B.A. Psychology (—). Serands clients in Ontario, CA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Dennis Jay Sherwin is a lawyer practicing personal injury, insurance bad faith, discrimination claims and 1 other area of law
  • Dennis received a B.A. degree from California State University, Northridge, and has been licensed for 54 years
  • Dennis practices at Rose, Klein & Marias LLP in Ontario, CA and 1 other location

Practice Areas Explained

Dennis Jay Sherwin's Areas of Practice

Each practice area below reflects the types of cases Dennis Jay Sherwin handles, with a brief overview of what that area of law covers.

Personal Injury

Personal injury attorneys help accident victims recover compensation for medical bills, lost wages, and pain & suffering. Most work on contingency — no fee unless you win.

Dennis Jay Sherwin is one of 264,852 personal injury attorneys indexed nationally. Browse personal injury attorneys in California →

Civil Litigation

Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.

Dennis Jay Sherwin is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in California →

Civil Rights

Civil rights attorneys for discrimination, police misconduct, constitutional rights, and civil liberties cases.

Dennis Jay Sherwin is one of 70,245 civil rights attorneys indexed nationally. Browse civil rights attorneys in California →

Insurance Law

Insurance attorneys for coverage disputes, bad faith claims, denied claims, and policy disputes.

Dennis Jay Sherwin is one of 121,912 insurance attorneys indexed nationally. Browse insurance attorneys in California →

Jurisdictional Context

Why local counsel matters in California

Practicing law in California. Legal matters in California are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Ontario are typically filed in the local municipal court or the appropriate California state district court, depending on subject matter and amount in controversy. An attorney licensed in California brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in California courts without local counsel or pro hac vice admission.

Looking for additional California attorneys? Browse all attorneys in Ontario or all attorneys in California.

Frequently Asked

Common questions about Dennis Jay Sherwin

Where is Dennis Jay Sherwin's law office located?
Dennis Jay Sherwin's law practice is located in Ontario, California. The firm is Rose, Klein & Marias LLP. You can contact the office directly through this profile page.
What practice areas does Dennis Jay Sherwin handle?
Dennis Jay Sherwin focuses on personal injury, litigation, civil rights, insurance. Each practice area listed reflects experience handling cases of that type in California.
How long has Dennis Jay Sherwin practiced law?
Dennis Jay Sherwin has 54+ years of legal experience and has been licensed since 1972.
Where did Dennis Jay Sherwin go to law school?
Dennis Jay Sherwin earned their education at (J.D., 1972); (—).
How can I contact Dennis Jay Sherwin for a consultation?
You can contact Dennis Jay Sherwin directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.

Education

J.D.
Loyola Marymount University
- 1972
California State University, Northridge B.A. Psychology
- In Progress

Bar Admissions

California
Admitted: 1972
U.S. District Court, Central District of California
Admitted: 1973

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