Mark Daniel Cahn, Criminal Defense Attorney in Washington, District of Columbia
Over 39 years of legal practice · focused on Criminal Defense, General, and Litigation · 5.0/5 rating from 1 verified client review
AttorneyatWilmerhale
Washington, DC
Practicing criminal defense in Washington since 1987.
- 39+
- Years practicing
- 5.0 ★
- 1 client review
- 2
- Bar admissions
Practices in
Are you Mark Daniel Cahn?
This profile was built from public bar records and is still unclaimed. Claim it free to control your photo, bio, and fees — and get client inquiries sent straight to you.
Quick answer
Mark Daniel Cahn is an attorney based in Washington, DC. The practice focuses on Criminal Defense, General, and Litigation. Mark has over 39 years of legal experience. Currently practicing at Wilmerhale. Rated 5.0 out of 5 from 1 client review.
- Based in
- Washington, DC
- Experience
- over 39 years
- Known for
- Criminal Defense · General · Litigation
- Handles Criminal Defense, General, and Litigation matters from Washington, DC.
- Over 39 years of practice as a licensed attorney.
- Recognized with AV Preeminent.
About Mark Daniel Cahn: Mark Daniel Cahn is an attorney based in Washington, DC. The practice focuses on Criminal Defense, General, and Litigation. Mark has over 39 years of legal experience. Currently practicing at Wilmerhale. Rated 5.0 out of 5 from 1 client review.
Areas of practice
Practice areas handled by Mark Daniel Cahn
Mark concentrates on criminal defense, general, litigation, and securities. Each area below outlines the kind of case Mark handles, typical outcomes to expect, and how the intake process starts.
Criminal Defense
View other Criminal Defense attorneys
General
View other General attorneys
Litigation
View other Litigation attorneys
Securities
View other Securities attorneys
Criminal Defense cases in Washington, District of Columbia
Mark takes criminal defense matters in Washington, District of Columbia. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Mark agrees to represent you.
General cases in Washington, District of Columbia
Mark takes general matters in Washington, District of Columbia. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Mark agrees to represent you.
Litigation cases in Washington, District of Columbia
Mark takes litigation matters in Washington, District of Columbia. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Mark agrees to represent you.
Securities cases in Washington, District of Columbia
Mark takes securities matters in Washington, District of Columbia. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Mark agrees to represent you.
Biography
About Mark Daniel Cahn — Over 39 years of District of Columbia criminal defense experience
Mark Daniel Cahn is an attorney based in Washington, DC. The practice focuses on Criminal Defense, General, and Litigation. Mark has over 39 years of legal experience. Currently practicing at Wilmerhale. Rated 5.0 out of 5 from 1 client review.
Mark Daniel Cahn is a lawyer practicing civil practice, securities, antitrust and 1 other area of law. Mark received a B.A. degree from Tufts University in 1983, and has been licensed for 39 years. Mark practices at WilmerHale in Washington, DC.
Mark's approach to criminal defense cases
Mark Daniel Cahn is a lawyer practicing civil practice, securities, antitrust and 1 other area of law. Mark received a B.A. degree from Tufts University in 1983, and has been licensed for 39 years. Mark practices at WilmerHale in Washington, DC.
The kind of cases Mark takes
Mark reviews new inquiries case-by-case for criminal defense, general, and litigation matters in Washington and the surrounding District of Columbia area.
Credentials
Mark Daniel Cahn's legal education and bar admissions
Yale University
J.D. · 1986
Tufts University
B.A. · 1983
Jurisdictions
Mark's state bar admissions
District of Columbia
1988 · ACTIVE
New York
1987 · ACTIVE
Mark studied at J.D. in Yale University and B.A. in Tufts University.
Law school and academic background
Mark completed J.D. in Yale University and B.A. in Tufts University. Formal legal training is one signal of substantive knowledge — the day-to-day practice Mark runs in District of Columbia is where that training gets applied to real client questions.
Recognition
Awards, publications, and recognition of Mark Daniel Cahn
Mark has received 1 formal recognition from bar associations, industry bodies, and peer-review services.
AV Preeminent
Legal awards and honors
AV Preeminent.
Locations
Mark Daniel Cahn's office in Washington
Mark's primary office is at 2100 Pennsylvania Ave., N.W., Washington, DC, 20037. In-person meetings are by appointment; a phone intake usually comes first.
Client feedback
Client reviews of Mark Daniel Cahn — 5.0/5 rating from 1 verified client review
Every review below is from a verified client of Mark. Reviews cover communication, case outcome, and value — the three signals that matter most when comparing criminal defense attorneys in Washington.
5.0
1 client review
Client ratings are sourced from public records and editorial research. Reviews on LawyersListed are accepted from verified clients once Mark Daniel Cahn claims this profile.
Read all reviewsHiring guide
How to hire Mark Daniel Cahn — what to expect in your first consultation
Working with a new criminal defense attorney should feel structured. Here's how the first two conversations with Mark usually go, from the moment you request a consult to the day representation begins.
Consultation formats and pricing
Mark charges for the initial consult. That fee is credited toward representation if you retain Mark's office.
What to bring to your first meeting
Bring any documents you already have — police reports, medical records, filed pleadings, correspondence from an insurer, a copy of the contract at issue. If you're not sure, err on the side of bringing everything; Mark will tell you what matters and what doesn't.
Questions to ask a criminal defense attorney in Washington, District of Columbia
A short list to run through before you commit: How many criminal defense matters have you handled in the last year? What's your fee structure? Who else in the office will work on this? What's your realistic estimate of timeline and range of outcomes? How do I reach you between meetings?
Fees & payment
Fees, payment methods, and consultation options for Mark
Mark discusses fees during intake so the arrangement fits the matter. Contingency, hourly, and flat-fee options are all common in criminal defense practice — ask which fits.
Hourly rates, contingency fees, and flat-fee options
Every criminal defense matter is priced differently. Simple document review might be a flat fee. Injury litigation is often contingency. Complex commercial disputes usually run hourly with a retainer. Mark confirms the model in the engagement letter before any work starts.
Payment methods and payment plans
Mark's office accepts standard payment methods. Ask about payment plans if the retainer is a stretch — many criminal defense practices work with clients on structured schedules.
Frequently asked
Frequently asked questions about Mark Daniel Cahn
How much does it cost to hire Mark for a criminal defense case?
Cost depends on the type of matter, the fee model (contingency, flat, hourly), and how contested the case becomes. Mark walks through the likely range during the consult so there are no surprises.
Does Mark offer a free consultation?
Mark charges for the initial consult; that fee is credited toward representation if you retain Mark's office. Some criminal defense attorneys offer free consults — check Mark's current terms during booking.
How long do criminal defense cases in District of Columbia typically take?
Simple criminal defense matters can wrap in a few weeks; disputed cases can run 6–18 months from intake to resolution, longer if the matter goes to trial. Mark gives a realistic estimate for your facts at the consult — vague answers here are a red flag.
Can Mark take my case if I'm outside Washington?
Mark is licensed in District of Columbia. Matters governed by District of Columbia law are the natural fit. Out-of-state matters are handled case-by-case, sometimes with local co-counsel. Ask during intake — Mark will tell you if the case is a fit or refer you to someone closer to your court.
What should I bring to my first meeting with Mark?
Bring every document that touches the dispute: contracts, correspondence, police or medical reports, filed pleadings, invoices, photographs, insurance letters. Also bring a written timeline of what happened, in your own words. Mark will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.
Is Mark accepting new criminal defense clients right now?
Mark's intake status shifts week to week. Submit the form; the office will confirm availability or refer the matter out.
Areas served
Criminal Defense attorneys serving Washington and Belize City in District of Columbia
Mark handles criminal defense matters throughout District of Columbia. Each city below is a direct link into the search page for verified criminal defense attorneys in that community.
More counsel
Other top-rated criminal defense attorneys in District of Columbia
If Mark's intake is full or the fit isn't right, these criminal defense attorneys in Washington handle similar matters. Every profile below is verified and open to consultations.

Steven A Fredley
Washington, District of Columbia
5.0· 29

Bridget Michael Rohde
Washington, District of Columbia
5.0· 22

Cameron Hajaran Tousi
Washington, District of Columbia
5.0· 21

Joseph John Bottiglieri
Washington, District of Columbia
5.0· 20

Martin Jacobs
Washington, District of Columbia
5.0· 18

David Franklin Freeman, Jr.
Washington, District of Columbia
5.0· 16