Atty. Mark B. Collier

Atty. Mark B. Collier

Mr. Mark B.

Denver Denver 21 yrs experience 21 year
Call (720) 230-2157 Book Appointment

Healthcare & More Attorney · Serving Denver, CO · 21+ Years Experience

Profile Summary

About Mark B. Collier at a Glance

Mark B. Collier is a Partner based in Denver, Colorado. They have 21+ years of legal experience, licensed to practice since 2005. Their practice focuses on medical malpractice, personal injury, business, tax, and litigation. Admitted to practice in Massachusetts (2005), New York (2006), Rhode Island (2006), and Colorado (2008). Educated at Suffolk University Law School (J.D., 2005) and George Washington University B.S. Biology (—). Active member of DRI, Associations •Colorado Bar Association •Denver Bar Association •Colorado Defense Lawyers Association •New York State Bar Association •Wyoming Bar Association •Defense Research Institute. Serves clients in Denver, CO and the surrounding metropolitan area.

Verified attorney profile · Updated October 2026

About Mark B. Collier

  • Mr. Mark B. Collier is a lawyer practicing healthcare, litigation, medical malpractice defense and 5 other areas of law
  • Mark received a B.S. degree from George Washington University, and has been licensed for 21 years
  • Mark practices in Denver, CO

Practice Areas Explained

Mark B. Collier's Areas of Legal Practice

Each practice area below reflects the types of cases Mark B. Collier handles, with a practical overview of what that area of law involves and how it may apply to your situation in Denver.

Medical Malpractice in Denver

Medical malpractice lawyers represent patients harmed by negligent doctors, hospitals, and other providers. Free case review, no fee unless you win.

Mark B. Collier is one of 48,593 medical malpractice attorneys indexed nationally. Browse medical malpractice attorneys in Colorado →

Personal Injury in Denver

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.

Mark B. Collier is one of 262,557 personal injury attorneys indexed nationally. Browse personal injury attorneys in Colorado →

Business & Corporate Law in Denver

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

Mark B. Collier is one of 497,491 business attorneys indexed nationally. Browse business attorneys in Colorado →

Tax Law in Denver

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

Mark B. Collier is one of 84,606 tax attorneys indexed nationally. Browse tax attorneys in Colorado →

Civil Litigation in Denver

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

Mark B. Collier is one of 450,751 litigation attorneys indexed nationally. Browse litigation attorneys in Colorado →

Jurisdictional Context

Why Local Counsel Matters in Denver

Practicing law in Colorado. Legal matters in Colorado are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Denver are typically filed in the local municipal court or the appropriate Colorado state district court, depending on subject matter and amount in controversy. An attorney licensed in Colorado brings working knowledge of local procedural deadlines, judicial practices in this venue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Colorado courts without local counsel or pro hac vice admission.

Denver Courts and Legal Process

Choosing a Denver-based attorney means your counsel already knows the local docketing timelines, preferred filing formats, and how individual judges typically rule on procedural motions — details that only come from practicing in this jurisdiction day after day. That local familiarity can translate to better strategy, faster filings, and fewer costly surprises.

Looking for additional Colorado attorneys? Browse all attorneys in Denver or all attorneys in Colorado.

Frequently Asked

Common Questions About Mark B. Collier

Where is Mark B. Collier's law office located?
Mark B. Collier's law practice is located in Denver, Colorado. You can contact the office directly through this profile page.
What practice areas does Mark B. Collier handle?
Mark B. Collier focuses on medical malpractice, personal injury, business, tax, litigation. Each practice area listed reflects experience handling cases of that type in Colorado.
How long has Mark B. Collier practiced law?
Mark B. Collier has 21+ years of legal experience and has been licensed since 2005.
Where did Mark B. Collier go to law school?
Mark B. Collier earned their education at (J.D., 2005); (—).
How can I contact Mark B. Collier for a consultation?
You can contact Mark B. Collier 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.

Professional Profile

Why Clients in Denver Choose Mark B. Collier

Selecting an attorney is one of the most consequential decisions you can make when a legal matter arises. Below are the core qualities that distinguish Mark B. Collier's practice in the field of medical malpractice, personal injury, business, tax, and litigation.

Decade-Tested Legal Experience

Mark B. Collier brings 21+ years of hands-on legal practice — enough to have navigated the recurring fact patterns, procedural traps, and negotiation dynamics that shape case outcomes.

Multi-State Bar Admission

Licensed in Massachusetts, New York, and Rhode Island, Mark B. Collier can represent clients in cases that span state lines or require counsel in multiple jurisdictions.

Broad Practice Area Coverage

Covering medical malpractice, personal injury, and business, Mark B. Collier can address the full spectrum of a client's legal needs without requiring referrals to separate specialists for each issue.

Local Presence in Denver

A Denver-based practice means Mark B. Collier attends hearings in the same courthouses, knows the local clerks, and understands the unwritten scheduling norms that affect every case filed here.

Case Types

Common Legal Issues Mark B. Collier Handles in Denver

Below is a representative sample of the types of matters Mark B. Collier has experience with under Colorado law. If your situation involves one of these case categories, this attorney may be well positioned to help you understand your options.

Surgical error claims
Medical Malpractice
Misdiagnosis and delayed diagnosis
Medical Malpractice
Birth injury lawsuits
Medical Malpractice
Hospital negligence
Medical Malpractice
Car accident injury claims
Personal Injury
Slip and fall cases
Personal Injury
Wrongful death suits
Personal Injury
Workers' compensation appeals
Personal Injury
Business formation and structure
Business
Contract drafting and review
Business
Partnership disputes
Business
Merger and acquisition support
Business

This list is illustrative, not exhaustive. Contact Mark B. Collier directly to discuss the specifics of your situation.

Search Reference

How People Find Mark B. Collier Online

Prospective clients searching for legal help in Denver commonly use a combination of the attorney's name and their specific legal need. The following search terms frequently lead people to this profile and to attorneys like Mark B. Collier.

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If any of the above matches what you searched for, you've found the right profile. Use the contact options at the top of this page to get in touch with Mark B. Collier directly.

Education & Law School Background

J.D.
Suffolk University Law School
- 2005
—
George Washington University B.S. Biology
- In Progress

Bar Admissions & Licensed Jurisdictions

Massachusetts
Admitted: 2005
New York
Admitted: 2006
Rhode Island
Admitted: 2006
Colorado
Admitted: 2008
Wyoming United States District Court District of Massachusetts District of Colorado United States Co
Admitted: 2017

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