Atty. William M. Cornachio

Atty. William M. Cornachio

Mr. William M.

Uniondale Uniondale 48 J. Erfahrung 48 year
Call (347) 798-1754 Book Appointment

Profile Summary

About William M. Cornachio at a glance

William M. Cornachio is a Partner based in Uniondale, New York, practicing at Rivkin Radler LLP. They have 48+ years of legal experience, licensed to practice since 1978. Their practice focuses on business, real estate, tax, and zoning. Admitted to practice in New York (1978) and District of Columbia U.S. District Court, Eastern District of New York U.S. District Court, Southern (1979). Educated at Fordham University School of Law (J.D., 1977) and Colgate University (B.A., 1973). Recognitions include AV Preeminent. Active member of Nassau County, New York State and American Bar Associations. Serands clients in Uniondale, NY and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

Über uns

  • Mr. William M. Cornachio is a lawyer practicing public finance & tax exempt finance, corporate & commercial, real estate and 1 other area of law
  • William received a B.A. degree from Colgate University in 1973, and has been licensed for 48 years
  • William practices at Rivkin Radler LLP in Uniondale, NY

Practice Areas Explained

William M. Cornachio's Areas of Practice

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

Business & Corporate Law

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

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

Real Estate Law

Real estate attorneys handle home purchases, sales, commercial transactions, title disputes, and landlord-tenant matters.

William M. Cornachio is one of 316,149 real estate attorneys indexed nationally. Browse real estate attorneys in New York →

Tax Law

Tax attorneys handle IRS audits, tax debt, international tax, estate planning, and tax court litigation.

William M. Cornachio is one of 85,302 tax attorneys indexed nationally. Browse tax attorneys in New York →

Land Use & Zoning

William M. Cornachio is one of 40,226 zoning attorneys indexed nationally. Browse zoning 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 Uniondale 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 Uniondale or all attorneys in New York.

Frequently Asked

Common questions about William M. Cornachio

Where is William M. Cornachio's law office located?
William M. Cornachio's law practice is located in Uniondale, New York. The firm is Rivkin Radler LLP. You can contact the office directly through this profile page.
What practice areas does William M. Cornachio handle?
William M. Cornachio focuses on business, real estate, tax, zoning. Each practice area listed reflects experience handling cases of that type in New York.
How long has William M. Cornachio practiced law?
William M. Cornachio has 48+ years of legal experience and has been licensed since 1978.
Where did William M. Cornachio go to law school?
William M. Cornachio earned their education at (J.D., 1977); (B.A., 1973).
How can I contact William M. Cornachio for a consultation?
You can contact William M. Cornachio 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.
What awards or recognition has William M. Cornachio received?
William M. Cornachio's notable recognition includes: AV Preeminent.

Education

J.D.
Fordham University School of Law
- 1977
B.A.
Colgate University
- 1973

Awards

AV Preeminent

Bar Admissions

New York
Admitted: 1978
District of Columbia U.S. District Court, Eastern District of New York U.S. District Court, Southern
Admitted: 1979

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