Atty. William Adam Mandelbaum

Atty. William Adam Mandelbaum

William Adam Mandelbaum is a lawyer practicing criminal defense, landlord & tenant, business litigation and 2 other areas of law. William received a A.A. degree from Nassau College in 1976, and has been licensed for 45 years.

Oyster Bay Oyster Bay 45 yrs experience 45 year
Call (516) 940-2055 Book Appointment

Profile Summary

About William Adam Mandelbaum at a glance

William Adam Mandelbaum is a Member based in Oyster Bay, New York, practicing at W. Adam Mandelbaum. They have 45+ years of legal experience, licensed to practice since 1981. Their practice focuses on criminal defense, business, litigation, and landlord/tenant. Admitted to practice in New York (1981). Educated at Hofstra University (J.D., 1981) and Nassau College (A.A., 1976). Serands clients in Oyster Bay, NY and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • William Adam Mandelbaum is a lawyer practicing criminal defense, landlord & tenant, business litigation and 2 other areas of law
  • William received a A.A. degree from Nassau College in 1976, and has been licensed for 45 years
  • William practices at W. Adam Mandelbaum in Oyster Bay, NY

Practice Areas Explained

William Adam Mandelbaum's Areas of Practice

Each practice area below reflects the types of cases William Adam Mandelbaum handles, with a brief overview of what that area of law covers.

Criminal Defense

A criminal defense attorney protects your rights from arrest through trial. Find experienced lawyers handling DUI, drug, federal, theft, and violent-crime charges.

William Adam Mandelbaum is one of 214,270 criminal defense attorneys indexed nationally. Browse criminal defense attorneys in New York →

Business & Corporate Law

Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.

William Adam Mandelbaum is one of 501,317 business attorneys indexed nationally. Browse business attorneys in New York →

Civil Litigation

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

William Adam Mandelbaum is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in New York →

Landlord & Tenant

Landlord-tenant attorneys for evictions, lease disputes, security deposits, and habitability claims.

William Adam Mandelbaum is one of 22,365 landlord/tenant attorneys indexed nationally. Browse landlord/tenant 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 Oyster Bay 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 Oyster Bay or all attorneys in New York.

Frequently Asked

Common questions about William Adam Mandelbaum

Where is William Adam Mandelbaum's law office located?
William Adam Mandelbaum's law practice is located in Oyster Bay, New York. The firm is W. Adam Mandelbaum. You can contact the office directly through this profile page.
What practice areas does William Adam Mandelbaum handle?
William Adam Mandelbaum focuses on criminal defense, business, litigation, landlord/tenant. Each practice area listed reflects experience handling cases of that type in New York.
How long has William Adam Mandelbaum practiced law?
William Adam Mandelbaum has 45+ years of legal experience and has been licensed since 1981.
Where did William Adam Mandelbaum go to law school?
William Adam Mandelbaum earned their education at (J.D., 1981); (A.A., 1976).
How can I contact William Adam Mandelbaum for a consultation?
You can contact William Adam Mandelbaum 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.
Hofstra University
- 1981
A.A.
Nassau College
- 1976

Bar Admissions

New York
Admitted: 1981

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