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 11 - 15 of 21 reviews | Divorce & Separation

Posted by Beth | August 24, 2015 | Hired Attorney | Divorce & Separation

Will continues to be a great attorney

I hired Will to represent me in my divorce and again to enforce a child support order. I was very pleased with both outcomes. I've since hired him again to defend my case when my ex filed a frivolous downward modification. Will was successful in having the case dismissed. Will continues to be f...air, honest, practical and knowledgeable. He has a great sense of humor and is calm when I'm not. Knowing my legal matters are in Will's hands brings me peace. I know I don't have to worry because he knows the law and always puts me at ease. I would never hesitate to refer a friend or family member to Will. He is a great attorney.

Posted by Randy | April 22, 2015 | Divorce & Separation

Honest, Even When Not in his Self Interest

I came to Mr. Sullivan today seeking a second opinion about the actions of my current divorce attorney, a local country lawyer. Two financial advisers had criticized the guy. So I asked two other local attorneys, who both said that my attorney had made a costly mistake. Sounded pretty damning, but... I had a gut feeling I should check further, since other parts of their advice did not check out. So I got another recommendation from a source I could trust, who pointed me to Mr. Sullivan... for a third second opinion. Mr. Sullivan did NOT try to poach me as a client. Instead, he told me that my local country lawyer had actually done exactly the right thing. He did not try to undermine my confidence in my own attorney, even tho' that might have got him my business, and that was exactly what two other attorney's tried to do. Instead, he explained how the point in question worked in the Suffolk County courts, and why he would have done pretty much the same thing.

Posted by momofjoss | December 02, 2014 | Divorce & Separation

The Right Fit

William Sullivan has always remained the same lawyer I hired him as throughout my 4 year divorce process : Responsive, knowledgable, informative and trustworthy. A lawyer needs to be the right fit for you and your case. Whether you need a lion in the court room, a family man who understands the lov...e you have for your children - Will is also an ethical person who can help you rest peacefully at night knowing you're doing right in this world. William Sullivan will follow your lead as he allows his clients to have a voice. Additionally, his level of expertise lends a calming experience to what can be the most of stressful situations. This among so many other things separates him from the rest.

Posted by anonymous | November 24, 2014 | Divorce & Separation

Excellent Representation in Divorce

Will represented me in a divorce action. This was a drawn out, contested case that went to trial. He was the second attorney I hired as my first attorney was non-responsive and did not deliver the service I expected of them. Will, on the other hand, has continuously kept me informed and delivered ex...cellent results. Will is someone with integrity, who has kept his word and was impressive in the courtroom. I would highly recommend him in any matrimonial action.

Posted by JC | July 29, 2014 | Divorce & Separation

Excellent lawyer

I retained Mr Sullivan after I was served papers for divorce . Knowing nothing about this at all , I was extremely scared. William Sullivan answered my questions and put my mind at ease. Going through a divorce isn't easy , but he gave advice that worked. His sense of humor and passion for his job m...ade it clear to me that everything would work out. He's trustworthy , firm , yet compassionate . He put my needs and the needs of my child first. He helped me understand the law and when to compromise or when to speak up and say 'no' . He helped me stand up for myself and if I ever doubted myself , I'd contact him and he always responded . I'd definitely recommend William Sullivan .

See All Client Reviews

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

Avvo Rating

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