
John Alan Greenhall, ADR Attorney in Philadelphia, Pennsylvania
Over 39 years of legal practice · focused on ADR, Contracts, and General · 5.0/5 rating from 1 verified client review
PartneratCohen Seglias Pallas Greenhall & Furman PC
Philadelphia, PA
Practicing adr in Philadelphia since 1987.
- 39+
- Years practicing
- 5.0 ★
- 1 client review
- 3
- Bar admissions
Are you John Alan Greenhall?
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Quick answer
John Alan Greenhall is a partner based in Philadelphia, PA. The practice focuses on ADR, Contracts, and General. John has over 39 years of legal experience. Currently practicing at Cohen Seglias Pallas Greenhall & Furman PC. Rated 5.0 out of 5 from 1 client review.
- Based in
- Philadelphia, PA
- Experience
- over 39 years
- Known for
- ADR · Contracts · General
- Handles ADR, Contracts, and General matters from Philadelphia, PA.
- Over 39 years of practice as a licensed attorney.
- Recognized with AV Preeminent.
About John Alan Greenhall: John Alan Greenhall is a partner based in Philadelphia, PA. The practice focuses on ADR, Contracts, and General. John has over 39 years of legal experience. Currently practicing at Cohen Seglias Pallas Greenhall & Furman PC. Rated 5.0 out of 5 from 1 client review.
Areas of practice
Legal matters John takes on
John concentrates on adr, contracts, and general. Each area below outlines the kind of case John handles, typical outcomes to expect, and how the intake process starts.
ADR
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Contracts
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General
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ADR cases in Philadelphia, Pennsylvania
John takes adr matters in Philadelphia, Pennsylvania. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before John agrees to represent you.
Contracts cases in Philadelphia, Pennsylvania
John takes contracts matters in Philadelphia, Pennsylvania. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before John agrees to represent you.
General cases in Philadelphia, Pennsylvania
John takes general matters in Philadelphia, Pennsylvania. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before John agrees to represent you.
Biography
Meet John Alan Greenhall — adr lawyer in Philadelphia
John Alan Greenhall is a partner based in Philadelphia, PA. The practice focuses on ADR, Contracts, and General. John has over 39 years of legal experience. Currently practicing at Cohen Seglias Pallas Greenhall & Furman PC. Rated 5.0 out of 5 from 1 client review.
John Alan Greenhall is a lawyer practicing construction, contracts / agreements, arbitration and 2 other areas of law. John received a B.A. degree from Franklin & Marshall College, and has been licensed for 39 years. John practices at Cohen Seglias Pallas Greenhall & Furman PC in Philadelphia, PA.
John's approach to adr cases
John Alan Greenhall is a lawyer practicing construction, contracts / agreements, arbitration and 2 other areas of law. John received a B.A. degree from Franklin & Marshall College, and has been licensed for 39 years. John practices at Cohen Seglias Pallas Greenhall & Furman PC in Philadelphia, PA.
Clients John works with
John reviews new inquiries case-by-case for adr, contracts, and general matters in Philadelphia and the surrounding Pennsylvania area.
Credentials
Education, bar admissions, and languages
George Washington University National Law Center J.D.
—
Franklin & Marshall College B.A.
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Jurisdictions
John's state bar admissions
New York
2013 · ACTIVE
New Jersey
1987 · ACTIVE
Pennsylvania
1987 · ACTIVE
John studied at — in George Washington University National Law Center J.D. and — in Franklin & Marshall College B.A..
Law school and academic background
John completed — in George Washington University National Law Center J.D. and — in Franklin & Marshall College B.A.. Formal legal training is one signal of substantive knowledge — the day-to-day practice John runs in Pennsylvania is where that training gets applied to real client questions.
Recognition
Recognition and thought leadership
John has received 1 formal recognition from bar associations, industry bodies, and peer-review services.
AV Preeminent
Legal awards and honors
AV Preeminent.
Affiliations
John's professional memberships and bar associations
S
membership
Green Building Council New Jersey Chapter •Delaware Valley Green Building Council
DVGBC) •American Institute of Architects, Philadelphia Chapter (AIA) •New Jersey Alliance for Action •Associated Builders and Contractors Western PA Chapter (ABC · membership
Locations
John Alan Greenhall's office in Philadelphia
John's primary office is at 1600 Market Street - 32nd. Floor, Philadelphia, PA, 19103. In-person meetings are by appointment; a phone intake usually comes first.
Cohen Seglias Pallas Greenhall & Furman PC
1600 Market Street - 32nd. Floor
Philadelphia, PA 19103
Open in Google MapsClient feedback
Client reviews of John Alan Greenhall — 5.0/5 rating from 1 verified client review
Every review below is from a verified client of John. Reviews cover communication, case outcome, and value — the three signals that matter most when comparing adr attorneys in Philadelphia.
5.0
1 client review
Client ratings are sourced from public records and editorial research. Reviews on LawyersListed are accepted from verified clients once John Alan Greenhall claims this profile.
Read all reviewsHiring guide
How to hire John Alan Greenhall — what to expect in your first consultation
Working with a new adr attorney should feel structured. Here's how the first two conversations with John usually go, from the moment you request a consult to the day representation begins.
Consultation formats and pricing
John charges for the initial consult. That fee is credited toward representation if you retain John'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; John will tell you what matters and what doesn't.
Questions to ask a adr attorney in Philadelphia, Pennsylvania
A short list to run through before you commit: How many adr 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 John
John discusses fees during intake so the arrangement fits the matter. Contingency, hourly, and flat-fee options are all common in adr practice — ask which fits.
Hourly rates, contingency fees, and flat-fee options
Every adr 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. John confirms the model in the engagement letter before any work starts.
Payment methods and payment plans
John's office accepts standard payment methods. Ask about payment plans if the retainer is a stretch — many adr practices work with clients on structured schedules.
Frequently asked
Frequently asked questions about John Alan Greenhall
How much does it cost to hire John for a adr case?
Cost depends on the type of matter, the fee model (contingency, flat, hourly), and how contested the case becomes. John walks through the likely range during the consult so there are no surprises.
Does John offer a free consultation?
John charges for the initial consult; that fee is credited toward representation if you retain John's office. Some adr attorneys offer free consults — check John's current terms during booking.
How long do adr cases in Pennsylvania typically take?
Simple adr 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. John gives a realistic estimate for your facts at the consult — vague answers here are a red flag.
Can John take my case if I'm outside Philadelphia?
John is licensed in Pennsylvania. Matters governed by Pennsylvania law are the natural fit. Out-of-state matters are handled case-by-case, sometimes with local co-counsel. Ask during intake — John 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 John?
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. John will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.
Is John accepting new adr clients right now?
John's intake status shifts week to week. Submit the form; the office will confirm availability or refer the matter out.
Areas served
ADR attorneys serving Philadelphia, Pittsburgh and Harrisburg in Pennsylvania
John handles adr matters throughout Pennsylvania. Each city below is a direct link into the search page for verified adr attorneys in that community.
More counsel
Other top-rated adr attorneys in Pennsylvania
If John's intake is full or the fit isn't right, these adr attorneys in Philadelphia handle similar matters. Every profile below is verified and open to consultations.

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