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M. Katherine Sullivan

Employee benefits Attorney at Framingham, MA

5.0   16 reviews

also known as Katherine Sullivan, Kate Sullivan

Free consultation
Free consultation
  • State Years
    Massachusetts - MA 23 years
    Connecticut - CT 31 years
  • Licensed for 23 years
    State MA
    Acquired 2000
    Active No misconduct found
  • Licensed for 31 years
    State CT
    Acquired 1992
    Active No misconduct found

We have not found any instances of professional misconduct for this lawyer.

About M.

Learn M.’s areas of practice.

Practice areas

Kate has represented hundreds of clients in their claims for disability benefits.  She has over 16 years of experience handling disability cases and is well versed in what it takes to win you benefits.


Kate assists people seeking short-term and long-term disability benefits. Kate has been successful at winning benefits for clients at every stage of the process, whether it is through their initial application, the internal appeal, pre-litigation settlement negotiations, mediation or litigation. Since many people have disability insurance benefits through their employment, those disputes are governed by a Federal Law called ERISA.  Kate also represents people who have individual disability policies that are governed by state law.


Kate has represented clients at all stages of their claim for Social Security Disability Income Benefits ("SSDI").  Kate knows the intricacies of what the Social Security Administration needs to know about her client's illness and limitations and is adept at navigating the often overwhelming process for her clients.


No matter what law governs your dispute, or who you are asking for benefits from, Kate will be a fantastic advocate and knows how to get you the benefits you deserve.





Law Office of Katherine Sullivan


5.0 / 5.0
  16 customer reviews
5 Star
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1 Star
Posted by Susan | March 4, 2016
This review is from a person who hired this attorney.
| Hired Attorney
Kate is an awesome attorney. My disability case continued on for over 3 years. During that time, Kate always kept me informed during each step in the process. She was professionally aggressive with opposing counsel, filing motions and advocating on my behalf. Her briefs addressed all their claims; never failing to address each issue that they presented. When I was discouraged or concerned, she would take the time to address my concerns and answer my questions. In the end, the judge found in my favor and ultimately a settlement was reached. Although filing a claim offers no guarantee of winning, My situation dictated that I try. I firmly believe that it was Kate's knowledge and expertise that led to the outcome and settlement we received. I have the utmost respect for her and her firm, Rosenfeld, Rafik and Sullivan.
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Posted by anonymous | March 26, 2014
Superlative LTD Insurance Lawyer
Atty. Sullivan is as knowledgeable, thorough, caring, efficient and effective as an attorney can be. My entire experience so far with Ms. Sullivan and her colleagues at Rosenfeld, Rafik and Sullivan, P.C., has been a very positive one, and I feel very lucky to be among her clients. I would recommend her unequivocally.
Posted by Richard | July 4, 2024
This review is from a person who hired this attorney.
| Hired Attorney
Review of services & advice
I had a contentious situation trying to get a major national insurance company to pay benefits on short & long term disability policies which I had paid premiums on for years. I received a referral to Ms Sullivan from a relative. Once brought up to speed on my situation she "took the bull by the horns" and within a few weeks I received the funds for several back months of benefits. The insurance company continued to stop benefits without prior notice a couple more times over a 3 year period, this despite fact SSDI accepted my first application for disability benefits early on. Atty Sullivan "nudged" them again and again to keep my benefits flowing. As I approached the time limit on the benefit period, the insurer again stopped paying me over a year before the scheduled expiration. Atty Sullivan carefully reviewed my options and we ended up filing suit in a federal court on alleged multiple counts of action. After about 4 months she negotiated a final settlement which pleased me very much. I found Atty Sullivan to be very easy to deal with. She spoke in language I understood, never "over promised" on potential results and "held my hand" when needed as events arose and responded promptly to email & phone messages. I also found her fee schedule to be very fair without some of the added fees and expenses added by law firms. So yes, I had to pay an attorney to get the benefits I was entitled to but it was a small price to pay in the end. Unfortunately there are still major insurance companies that feel they can take your money and ignore you when you file for the benefits. A very sad state of affairs. Lastly, there were many issues that cropped up during the 3+ years Atty Sullivan helped me. I found her breadth of knowledge on soo many issues to be incredible. This review may seem to be a bit over the top, but it reflects my actual personal experience. I am a retired financial executive so I spent thousands of hours over 40 years working with attorneys and she just stands out as one of the best. I whole heartedly endorse Atty Sullivan and believe you will not find any better, by almost any measurement criteria.
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Posted by Laura S | October 19, 2022
This review is from a person who hired this attorney.
| Hired Attorney
HIGHLY Recommend
Atty Kate Sullivan is more than an excellent attorney. She took on my Erisa disability case when other firms felt it was a lost cause. She knows the law, she finds loop holes and worked tirelessly for my case. She is a leader and is persuasive. I was always kept informed along the way and she was always responsive. I was extremely pleased with the end result. I highly reccommend her.
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Posted by Benjamin Allen | August 29, 2021
This review is from a person who hired this attorney.
| Hired Attorney
Outstanding Attorney
Kate is the best attorney I’ve ever had to use. She is thoughtful and insightful and very responsive. I highly recommend her.
Posted by CR | June 6, 2020
This review is from a person who hired this attorney.
| Hired Attorney
Katherine has precise execution and is an equally wonderful person.
I can’t help but feel gratitude for the years of preparation Kate put forth to ensure a successful outcome for my case. Her persistence in showcasing the truth of the case and the time it took to research many of the wrongdoings was astounding. I will forever be appreciative of her professional guidance, support and amazing execution. She was always available despite her busy schedule and helped me feel secure about the case regardless of all the challenges and uncertainties I simultaneously had with my health. I know I couldn’t have done it without her! I am forever grateful that I choose Kate and she was willing to take on my case. She is certainly the best in her field!
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Posted by anonymous | February 6, 2020
This review is from a person who hired this attorney.
| Hired Attorney
Unbelievably Amazing Attorney!
Attorney Sullivan is extremely responsive to all correspondence you send to her. She explains everything and keeps you informed all along your journey. She is exquisite with details in your case. I could not recommend a better attorney ANYWHERE! Attorney Sullivan is truly a one of a kind- gem! If you choose to work with attorney Kate Sullivan you will get a top notch professional, who is smart, extremely detailed, hardworking and amazing! We were truly blessed to find her and we are so glad we did! Thank you Attorney Sullivan!
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Posted by anonymous | January 17, 2019
This review is from a person who hired this attorney.
| Hired Attorney
Diligent, Professional Representation
I’m have been a practicing attorney for nearly 30 years and I hired Kate to represent me for a Long Term Disability claim. One of the best decisions I ever made! Like many people I had read many of the horror stories of how the insurance companies act and treat claimants. The stories are all true and in my case it was worse than what I expected. Kate dealt with multiple parties, (my doctors, insurance doctors, claim investigators, etc.) to finally resolve my claim. The insurance company turned off my benefits after 60 days and tried to rewrite the contract after 6 years of paying premiums. The demand letter as well as the research Kate did in advance were nothing short of extraordinary. I would absolutley recommend Kate without reservation for any matter dealing with Disability Insurance. She is the ultimate professional!
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Posted by DF | January 17, 2019
This review is from a person who hired this attorney.
| Hired Attorney
Excellent Attorney
Applying for disability is stressful and can be especially difficult for both the person who is ill and their caretaker. My husband and I reached out to Kate to appeal an employer disability case and she not only made the appeal process as low-stress as possible, but also won our case for us! Kate continues to lift the burden off our shoulders during the process of applying for social security disability by taking responsibility over everything she can, and by continuing to move the case along with the lowest amount of our participation possible so we can continue to focus on taking care of me and getting me better. She is incredibly knowledgeable and very easy to talk to. We highly recommend her to others.
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Posted by Karin | November 27, 2017
This review is from a person who hired this attorney.
| Hired Attorney
Metlife Claim Disability that was denied to employee
I work for a major corporation and was out for several months with a debilitating illness. During that time I struggled with Metlife Insurance . They held the purse strings for me getting paid under my short-term disability. However they did not pay me for any of the time that I was out. They simply denied my claim. I had to use my savings to live on. As time went on I learned about Katherine and was advised that she was very good. I was told that Katherine knew the laws inside and out and to give her a try. I called her and set up an appointment. From the moment that we met she was very compassionate, understanding and knowledgeable. I knew I had made the right choice. Going forward with my appeal with Metlife Insurance Co Katherine guided me through the entire process. She explained what she was going to do and I worked with her closely. She always kept me informed and treated me with great respect. The outcome....we won our appeal ! I was more than delighted as this long, suffering struggle with a giant insurance company finally came to an end. I recommend Katherine to anyone who has a battle with an insurance company and getting paid for their time out while ill. Thank-you again Katherine. Your hard work paid off.
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Posted by Joan | October 6, 2017
This review is from a person who hired this attorney.
| Hired Attorney
Attorney Sullivan is a professional attorney is all sense of the term! Authentic, honest and hard working. Upfront about her costs for her billing hours and is fair. She listened to my entire story and, over the course of my case, was able to get a fair and reasonable outcome in my favor that has enabled me to live with the grace and dignity of being able to pay for my health care insurance needs, rent, and bills and not live homeless. I am so grateful for her work as a disability attorney, and would highly recommend her as a skilled professional to help you with your situation. Give her a try. She's very understanding and empathetic. :) Good Luck.
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Posted by anonymous | September 19, 2016
This review is from a person who hired this attorney.
| Hired Attorney
Great Experience
Very knowledgeable and took on my case immediately!!!
Posted by Joseph | March 7, 2016
This review is from a person who hired this attorney.
| Hired Attorney
Excellent Representation
Kate provided me with top notch representation. Indeed, she is a top disability lawyer. I did a lot of research before choosing a lawyer, and determined that Kate and her firm are among the best in the business. She is very intelligent, a strategic thinker and a great communicator.
Posted by Brian | March 5, 2016
This review is from a person who hired this attorney.
| Hired Attorney
Excellent representation...highly recommended!
Kate Sullivan recently represented me in a legal matter. I cannot speak highly enough of her for her professionalism and top notch representation. She always communicated with me to advise me on the status of my case and never failed to respond to any inquiry I may have had. I will certainly recommend her and her firm to my family or friends who may need representation in the future.
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Posted by John | March 26, 2014
Kate and her team are a godsend.
A change in my health caused me to be unable to work any longer and I didn't know where to turn. I contacted the Massachusetts CFIDS/ME & FM Association for advice and as well as other assistance they gave me, they referred me to Ms. Sullivan for representation with SSDI and Long Term disability insurance claims and appeals. At our meeting Kate immediately put me at ease. She clearly explained what my options were and answered all my questions. She introduced me to to her assistant Cori and we agreed on fees. She started work on my case. It can be a long and drawn out process with various "bumps in the road" but Ms. Sullivan reassured me and kept me informed throughout the entire journey. All the while I was in constant email and phone contact with her extremely competent and capable assistant, Cora. I can't say enough good about the care and representation Ms. Sullivan provided me.
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Posted by John | March 23, 2014
Attorney Kate Sullivan, really turned things around for us!
Whenever you think that things can't get worse, they can! It's not often that one finds a firm that puts forth the extra effort that Attorney Kate Sullivan and her team did for my complex disability case. We were in dire straights when we first met with Kate and her legal team. They listened carefully and developed my case with a succinct strategy, with clear tactics and a clear technical plan. They really turned things around for us. We are very appreciative to Kate and her team.
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  • Free Consultation 30 minutes
Payment methods
Check, Credit Card


AVVO RATING 7.6 (Very Good)

Work Experience

  • Owner
  • Law Office of Katherine Sullivan
  • 2017 - Present
  • Partner
  • Rosenfeld Rafik & Sullivan, PC
  • 2006 - 2016
  • Associate
  • Law Office of Mark Bronstein
  • 2002 - 2006
  • Court Clerk
  • State Of Connecticut Judicial Branch
  • 1992 - 2001
View all work experience


  • University of Connecticut School of Law
  • JD - Juris Doctor
  • 1992
  • Providence College
  • BA - Bachelor of Arts
  • 1987

Sample of Legal Cases

  • Young v. Aetna Life Ins. Co., --- F.Supp.3d ----2015 WL 7194812 (D.Mass. Nov. 16, 2015)
  • Judge Ordered reinstatement of benefits


  • Boston Bar Association, Volunteer Lawyers Project
  • Volunteer Attorney
  • 2003 - Present
  • Boston Bar Association
  • Member
  • 2003 - Present
  • Health Law Advocates
  • Volunteer Attorney
  • 2003 - Present
  • Massachusetts Bar Association
  • Member
  • 2003 - Present
  • National Organization of Social Security Claimants Representatives
  • Member
  • 2003 - Present
View all associations

Languages Spoken

  • English
  • Spanish

Speaking Engagements

  • Support Group
  • SSDI and LTD Basics
  • 2008

Attorney endorsements

Received (3)
Given (2)
Endorse M.
Insurance Attorney | Jan 31
Relationship: Fellow lawyer in community
"Kate is a tireless advocate for her clients! She has the experience and knowledge to fight for her clients' claims --to get them the social security and insurance benefits they are entitled to. If you have Kate as your attorney you are in good hands."
Employee benefits Attorney | Oct 05
Relationship: Co-worker
"Kate is a wonderful advocate for her clients and uses her depth of knowledge and experience to expertly counsel and represent individuals."
Employee benefits Attorney | Apr 18
Relationship: Worked for lawyer
"I have known Kate personally for over 10 years and have worked with her on a number of matters involving employee disability benefits and Social Security Disability benefits. Kate is known for tirelessly working on her client's behalf to attain the results they deserve. She is an outstanding attorney and an outstanding advocate for her clients."

Avvo Contributions

This attorney hasn't created any legal answers in Q&A or legal guides recently on Avvo.

Framingham Employee benefits Lawyer M. Katherine Sullivan
M. Katherine Sullivan
Employee benefits Attorney
Framingham, MA
Licensed for 31 years
Free Consultation