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Atty. David Henry Arntsen

Atty. David Henry Arntsen

David Henry Arntsen is a lawyer practicing aviation, negligence, insurance and 3 other areas of law. David received a B.S. degree from University of Massachusetts at Amherst in 1987, and has been licensed for 35 years.

Smithtown Smithtown 35 yrs experience 35 year
Call (631) 978-3354 Book Appointment

Profile Summary

About David Henry Arntsen at a glance

David Henry Arntsen is a Counsel based in Smithtown, New York, practicing at Devitt Spellman Barrett, L.L.P., L.L.P.. They have 35+ years of legal experience, licensed to practice since 1991. Their practice focuses on personal injury, product liability, litigation, civil rights, and insurance. Admitted to practice in New York (1991) and U.S. District Court, Eastern, Western and Southern Districts of New York (1991). Educated at St. John's University School of Law (J.D., 1990) and University of Massachusetts at Amherst (B.S., 1987). Active member of New York State and American Bar Associations. Serands clients in Smithtown, NY and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • David Henry Arntsen is a lawyer practicing aviation, negligence, insurance and 3 other areas of law
  • David received a B.S. degree from University of Massachusetts at Amherst in 1987, and has been licensed for 35 years
  • David practices at Devitt Spellman Barrett, L.L.P., L.L.P. in Smithtown, NY

Practice Areas Explained

David Henry Arntsen's Areas of Practice

Each practice area below reflects the types of cases David Henry Arntsen 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.

David Henry Arntsen is one of 264,852 personal injury attorneys indexed nationally. Browse personal injury attorneys in New York →

Product Liability

David Henry Arntsen is one of 66,193 product liability attorneys indexed nationally. Browse product liability attorneys in New York →

Civil Litigation

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

David Henry Arntsen is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in New York →

Civil Rights

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

David Henry Arntsen is one of 70,245 civil rights attorneys indexed nationally. Browse civil rights attorneys in New York →

Insurance Law

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

David Henry Arntsen is one of 121,912 insurance attorneys indexed nationally. Browse insurance attorneys in New York →

Jurisdictional Context

Why local counsel matters in New York

Practicing law in New York. Legal matters in New York are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Smithtown are typically filed in the local municipal court or the appropriate New York state district court, depending on subject matter and amount in controversy. An attorney licensed in New York 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 New York courts without local counsel or pro hac vice admission.

Looking for additional New York attorneys? Browse all attorneys in Smithtown or all attorneys in New York.

Frequently Asked

Common questions about David Henry Arntsen

Where is David Henry Arntsen's law office located?
David Henry Arntsen's law practice is located in Smithtown, New York. The firm is Devitt Spellman Barrett, L.L.P., L.L.P.. You can contact the office directly through this profile page.
What practice areas does David Henry Arntsen handle?
David Henry Arntsen focuses on personal injury, product liability, litigation, civil rights, insurance. Each practice area listed reflects experience handling cases of that type in New York.
How long has David Henry Arntsen practiced law?
David Henry Arntsen has 35+ years of legal experience and has been licensed since 1991.
Where did David Henry Arntsen go to law school?
David Henry Arntsen earned their education at (J.D., 1990); (B.S., 1987).
How can I contact David Henry Arntsen for a consultation?
You can contact David Henry Arntsen 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.
St. John's University School of Law
- 1990
B.S.
University of Massachusetts at Amherst
- 1987

Bar Admissions

New York
Admitted: 1991
U.S. District Court, Eastern, Western and Southern Districts of New York
Admitted: 1991

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