Atty. Deirdre Sullivan

Atty. Deirdre Sullivan

Deirdre Sullivan is a lawyer practicing wills & living wills, business, probate and 4 other areas of law. Deirdre received a B.S. degree from Pennsylvania State University in 1996, and has been licensed for 26 years.

York York 26 yrs experience 26 year
Call (223) 877-3124 Book Appointment

Profile Summary

About Deirdre Sullivan at a glance

Deirdre Sullivan is a Member based in York, Pennsylvania, practicing at Sullivan Yost, P.C.. They have 26+ years of legal experience, licensed to practice since 2000. Their practice focuses on probate, business, bankruptcy, poa, and litigation. Admitted to practice in Pennsylvania (2000) and U.S. District Court, Middle District of Pennsylvania (2001). Educated at Widener University (J.D., 1999) and Pennsylvania State University (B.S. Management, 1996). Serands clients in York, PA and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Deirdre Sullivan is a lawyer practicing wills & living wills, business, probate and 4 other areas of law
  • Deirdre received a B.S. degree from Pennsylvania State University in 1996, and has been licensed for 26 years
  • Deirdre practices at Sullivan Yost, P.C. in York, PA

Practice Areas Explained

Deirdre Sullivan's Areas of Practice

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

Probate

Deirdre Sullivan is one of 128,014 probate attorneys indexed nationally. Browse probate attorneys in Pennsylvania →

Business & Corporate Law

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

Deirdre Sullivan is one of 501,317 business attorneys indexed nationally. Browse business attorneys in Pennsylvania →

Bankruptcy & Debt

A bankruptcy attorney can help you eliminate debt, stop creditor harassment, and protect your home through Chapter 7 or Chapter 13.

Deirdre Sullivan is one of 105,321 bankruptcy attorneys indexed nationally. Browse bankruptcy attorneys in Pennsylvania →

Power of Attorney

Deirdre Sullivan is one of 33,188 poa attorneys indexed nationally. Browse poa attorneys in Pennsylvania →

Civil Litigation

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

Deirdre Sullivan is one of 454,532 litigation attorneys indexed nationally. Browse litigation attorneys in Pennsylvania →

Jurisdictional Context

Why local counsel matters in Pennsylvania

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

Looking for additional Pennsylvania attorneys? Browse all attorneys in York or all attorneys in Pennsylvania.

Frequently Asked

Common questions about Deirdre Sullivan

Where is Deirdre Sullivan's law office located?
Deirdre Sullivan's law practice is located in York, Pennsylvania. The firm is Sullivan Yost, P.C.. You can contact the office directly through this profile page.
What practice areas does Deirdre Sullivan handle?
Deirdre Sullivan focuses on probate, business, bankruptcy, poa, litigation. Each practice area listed reflects experience handling cases of that type in Pennsylvania.
How long has Deirdre Sullivan practiced law?
Deirdre Sullivan has 26+ years of legal experience and has been licensed since 2000.
Where did Deirdre Sullivan go to law school?
Deirdre Sullivan earned their education at (J.D., 1999); (B.S. Management, 1996).
How can I contact Deirdre Sullivan for a consultation?
You can contact Deirdre Sullivan 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.
Widener University
- 1999
B.S. Management
Pennsylvania State University
- 1996

Bar Admissions

Pennsylvania
Admitted: 2000
U.S. District Court, Middle District of Pennsylvania
Admitted: 2001

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