William Michael Sullivan

William Michael Sullivan

4.9
Rating: 10.0

Licensed for 33 years

Family Lawyer at SAYVILLE, NY
Practice Areas: Family, Divorce & Separation, Marriage & Prenuptials

173 NORTH MAIN STREET - SUITE 317, SAYVILLE, NY

About William

Biography

Practice Areas

3

Practice Areas

Fees and Rates

Cost

Hourly Rates

$ 200-495 per hour

Retainer

Always


Payment Methods

  • Cash
  • Check
  • Credit Card

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Licenses

Licensed in New York for 33 years

State: New York

Acquired: 1992

Delinquent

No misconduct found

Location

The Law Office of William M. Sullivan

173 NORTH MAIN STREET - SUITE 317, SAYVILLE, NY, 11782

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William Michael Sullivan's Reviews

Avvo Review Score

4.9 /5.0

33 Client Reviews

Filter Avvo Reviews (33) Refine reviews to match your needs. Use the filters to quickly surface reviews that align with your case or priorities.

Showing 26 - 30 of 33 reviews

Posted by Lou | May 12, 2014 | Family

Do you want a lawyer that takes a personal interest AND win your case? Meet Will Sullivan!

I met Will on New Years Eve, about 4 years ago. I retained him to assist on a bogus OOP my ex filed against me. First off I'd like to say one thing that impressed me was his genuine interest in my case, and his availability. It was always easy to reach him and any/all issues, questions and concerns ...were addressed in a timely manner. With his knowledge of family law, he was very reassuring and explained everything in layman's terms. With our first appearance on the OOP case he was able to have it vacated immediately. I was so impressed with not just his knowledge, but with his courtroom mannerisms, that I hired him on 2-3 more cases including a custody case which he helped me win. And with each case he would explain just what needs to be done and how the process works step by step. I would definitely recommend and rehire him if needed. To sum it up, Will Sullivan is an attorney who handles himself professionally in the courtroom, I like to say 'professionally polite'. He can harpoon his adversary in front of a judge without ever raising his voice, he simply allows his knowledge of the law and impeccable timing in presenting his point to shut down the opposition in a professional manner. He is extremely competent with current family law, maintains excellent communication with his clients and truly defends his clients as if they were a member of his personal family. In the past 4 years working with Will, I felt more like a brother/best friend rather then 'just another client or paycheck'. If you want a highly competent attorney that will take your case and handle it like he's personally involved, then you need to meet with Will. I'm sure after meeting with him you will hire him. You will leave his office feeling confident in his ability and professionalism and any stress caused by your current situation, will be greatly reduced after meeting with Will and seeing him in action. Again, I hope to never need his services in the future, but if I do there's no other attorney I would even consider.

Posted by Kathleen | March 13, 2014 | Divorce & Separation

Five-Star-Lawyer

From the second I spoke with Will on the phone, I knew he was the right fit for my case, which involved my 3 year old daughter at the time. I wanted someone who was a family man and who also carried the right balance of "tiger" when needed. His confidence and integrity, along with his zest for life a...nd passion for what he does is contagious, reminding me each time we spoke or met that I made the right decision in choosing him. It was also important I hired someone who was experienced but also took the time to listen to what I had to say and respect my comfort level. He followed my lead in the pace I wanted to go and I am pleased to say I am satisfied with the outcome of my divorce agreement. Will and his team have allowed me to provide the very best for my daughter: a life of consistency and love from both her mother and father.

Posted by Joan | March 12, 2014 | Divorce & Separation

A Brilliant lawyer who really cares... Simply The BEST

I retained William M. Sullivan to represent me in my divorce after been sorely disappointed by two previous lawyers. From our first meeting, I could tell Will is unique in his obvious passion about his work and his dedication and commitment to his clients. He is a wonderful communicator and his prof...essionalism inspires confidence and trust in him. Throughout the time we worked together I felt he always gave advice and made decisions with my best interest at heart. Will possesses a winning combination of excellent analytical, negotiation and interpersonal skills. He took the time to ensure my questions were answered and always kept me informed throughout the process. Will was positive yet pragmatic in his approach and he always knew the right time to be aggressive and when to compromise. He has proven himself to be extremely knowledgeable, ethical, hard working, and highly effective. I have nothing but the highest regard and respect for him as an attorney and as a person. I found Will to be outstanding in his field and I could not have had better representation in handling my divorce case. I would highly and unequivocally recommend him.

Posted by Jeannine | March 11, 2014 | Divorce & Separation

Came highly recommended!

I am a teacher and Will was recommended to me by a wonderful family that knew him on a personal level and also used his services in two of their divorces. Ironically, when I was looking into a divorce attorney, a friend of mine was a Suffolk County District Attorney for many years and it was also th...is office that he recommended. If I remember correctly Will also serves on a board that probably gives him an upper hand as your attorney. He has a great rapport with the judges in the courts and he is very easy to talk to. He is also a dad himself so he gets what it means when you are in something to fight for the rights of your children. He is compassionate yet tough when he needed to be. He is very educated, well spoken and is definitely someone you would feel proud to represent you.

Posted by anonymous | March 11, 2014 | Divorce & Separation

Man of his word.

I have retained Will Sullivan with regards to my divorce and I highly recommend him. I have a very trying and difficult case and he always had me and my children's best interest at heart. He is very honest and compassionate man, which always eased my mind that he would always protect us.

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William Michael Sullivan's Lawyer Endorsements

Endorse William
Somair Syed Alam headshot
Somair Alam

Family lawyer | Feb 13

Relationship: Fellow lawyer in community

"Very knowledgeable family law attorney, dedicated to his clients' success."

Catherine E. Miller headshot
Catherine Miller

Divorce and separation lawyer | Sep 24

Relationship: Fellow lawyer in community

"Ms. Sullivan is highly respected by his colleagues for his professional conduct, intelligence and tenacious representation of his client."

Karen Svendsen headshot
Karen Svendsen

Divorce and separation lawyer | May 15

Relationship: Co-worker

"I endorse this lawyer. Mr. Sullivan is an extremely tough and competent litigator who stops at nothing to pursue the rights of his clients. In addition, Mr. Sullivan has integrity and always treats his clients with the utmost respect and personal attention. I highly recommend this attorney for any Family Law matter."

Ettore A. Simeone headshot
Ettore Simeone

Divorce and separation lawyer | May 12

Relationship: Fellow lawyer in community

"I endorse this lawyer. Will is truly on of the finest attorneys I have ever met in my 32 years of legal practice. He is a wealth of knowledge about any aspect of Family Law and i often call him when I have a complex legal question to get his learned opinion, which I highly respect. He is always willing to assist a colleague. He is highly ethical and competent. I respect him greatly and give him my highest endorsement."

View All Endorsements
Brittany A. Fiorenza Esq. headshot
Brittany Fiorenza

Divorce and separation lawyer

Experience

Rating:  10.0 (Superb)

Honors

2014

Top Attorneys in Long Island, Legal Leaders

1992

Trial Advocacy, Villanova University School of Law

1991

Moot Court Board, Villanova University School of Law

Work Experience

2003 - Present

Partner, Long Tuminello, LLP

2001 - 2003

Managing Partner, William M. Sullivan, P.C.

1992 - 2001

General Counsel/Director of Compliance, AMBAC Financial Services, Inc.

Associations

2014 - 2015

Suffolk County Matrimonial Bar Association

President

2013 - 2014

Suffolk County Matrimonial Bar Association

Vice President

Sample of Legal Cases

O'Loughlin v. Sweetland App Div 2nd Dept. 2009-02720

Appellate Division Reversed

See More Legal Cases

Education

1992

Villanova

JD - Juris Doctor

1987

University of Notre Dame

BBA - Bachelor of Business Administration

Speaking Engagements

2014

Hot Button Topics in Matrimonial and Family Law - November 7, 2014 Hague Convention and Other International Treaties and laws and effects on counseling clients

2010

Matrimonial Boot Camp

Financial Disclosure

Publications

2014

Legal Leaders Legal Leaders: Long Island Top Rated Lawyers

Languages

English

Activity

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Avvo Rating Levels
10.0 - 9.0 Superb8.9 - 8.0 Excellent7.9 - 7.0 Very Good6.9 - 6.0 Good5.9 - 5.0 Average4.9 - 4.0 Concern3.9 - 3.0 Caution2.9 - 2.0 Strong Caution1.9 - 1.0 Extreme Caution