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David O. McColloch

AssociateatMarshall Dennehey

King Of Prussia, PA

Practicing general in King Of Prussia since 2015.

11+
Years practicing
1
Bar admission

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Quick answer

David O. McColloch is an associate based in King Of Prussia, PA. The practice focuses on General and Medical Malpractice. David has over 11 years of legal experience. Currently practicing at Marshall Dennehey.

Based in
King Of Prussia, PA
Experience
over 11 years
Known for
General · Medical Malpractice
  • Handles General and Medical Malpractice matters from King Of Prussia, PA.
  • Over 11 years of practice as a licensed attorney.

About David O. McColloch: David O. McColloch is an associate based in King Of Prussia, PA. The practice focuses on General and Medical Malpractice. David has over 11 years of legal experience. Currently practicing at Marshall Dennehey.

Areas of practice

Practice focus

David O. McColloch represents clients in King Of Prussia, Pennsylvania across the following areas of law. Each area links to other verified attorneys with the same focus.

Biography

About David O. McColloch

David has devoted his career to helping health care providers and professionals navigate some of the most challenging legal situations. He approaches every case with rigorous investigation, combining a deep, practical understanding of both legal principles and the scientific issues central to his clients’ cases. Known for his collaborative style, David partners closely with clients from the initial notice of a potential claim through trial and appeal, providing comprehensive and strategic representation every step of the way.

David began his legal career as an attorney-examiner with the Pennsylvania Insurance Department, managing more than $200 million of litigation exposure for the Mcare Fund on behalf of physicians and hospitals around the state. In 2018, he moved to private practice. David is experienced in handling litigation in state and federal courts, from investigation and initial pleadings, to discovery, depositions and expert review, through to resolution.

A Pennsylvania native, David is proud to call Delaware County home.

Year joined

2025

Results

Defense verdict Secured on behalf of a major Philadelphia healthcare provider

Health Care Liability
February 20, 2026

We obtained a defense verdict on behalf of a major Philadelphia healthcare provider after a contentious six-day trial. After undergoing a kidney transplant, a patient suffered complications in post-operative care and died a day after the surgery. The plaintiffs were critical of the post-operative care, claiming the physicians failed to take the patient back to the operating room in light of post-op bleeding.

Credentials

Education

  • University of Wisconsin Law School

    J.D. · 2014

  • Bard College

    B.A. · 2009

Jurisdictions

Bar admissions

  • Pennsylvania

    2015 · ACTIVE

Affiliations

Professional memberships

  • Montgomery Bar Association

    membership

Locations

Office locations

Main office

Marshall Dennehey

620 Freedom Business Center, Suite 300

King Of Prussia, PA 19406

Open in Google Maps

Client feedback

Client reviews

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Frequently asked

Common questions

  • What areas of law does David O. McColloch practice?

    David O. McColloch focuses on General and Medical Malpractice.

  • Where is David O. McColloch located?

    David O. McColloch primarily serves clients in King Of Prussia, Pennsylvania, with an office at 620 Freedom Business Center, Suite 300.

  • How experienced is David O. McColloch?

    David O. McColloch has 11 years of legal practice, having been licensed since 2015.

  • Is David O. McColloch a verified attorney?

    David O. McColloch's profile is listed but has not yet been claimed by the attorney. Verification status is pending.

  • How can I schedule a consultation with David O. McColloch?

    You can book a consultation through LawyersListed directly from this page. Initial outreach can also be made by phone at 484-895-2321.