★★★★★Sep 2025
“Excellent trial attorney who really knows how to get the maximum recovery on his cases.!”
— Mitchell Scott SexnerGoogle
Register → IL → Personal Injury → № IL-1987
Counsel of Record
Jay
Deratany
· Chicago, IL
“Jay Deratany is an experienced attorney based in Chicago, IL, specializing in personal injury and medical malpractice litigation. With 38 years of dedicated practice, he brings ext…”
- Years at Bar
- 38
- Bar Registration
- IL-1987
- Law School
- []
- Languages
- French, English
Contact
☎(312) 815-6231
⌖221 North LaSalle Street
Chicago, IL 60601-1502
Chicago, IL 60601-1502
Initial consultation: free · 30 min
Response typically within 24 hours
§ 01 — Practice
Areas of practice
Credentials
- Years in Practice
- 38 yrs
- Bar Number
- IL-1987
- Law School
- []
- Languages
- French, English
- Location
- Chicago, IL
60601-1502
Also listed on
§ 02 — Biography
Jay Deratany is an experienced attorney based in Chicago, IL, specializing in personal injury and medical malpractice litigation. With 38 years of dedicated practice, he brings extensive knowledge and skill to complex cases involving serious injuries and healthcare negligence. Mr. Deratany is committed to advocating vigorously for his clients' rights and securing the compensation they deserve.
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§ 03 — Reviews
What clients have said.
4.1★14 reviews
Avvo
Reviewed6 reviews
Google Reviews4.1★ · 14 total
See all 14 on Google →★★★★★Jun 2025
“I had an incredible experience working with Deratany & Kosner, and I especially want to recognize attorney Greg Olmstead for his outstanding work. Greg was not only professional and knowledgeable, but also compassionate and genuinely dedicated to getting the best possible outcome for my case. From the start, Greg made sure I understood every step of the process. He always took the time to answer my questions, returned calls promptly, and made me feel like a priority--not just another case. His attention to detail, strategic thinking, and relentless advocacy truly made a difference. Thanks to Greg's hard work and commitment, I felt confident and supported throughout a stressful and emotional situation. I highly recommend Deratany & Kosner, and if you get the chance to work with Greg Olmstead, you can rest assured you're in excellent hands.”
— HectorGoogle
★★★★★May 2025
“He is the best as the business is”
— Chris BalloGoogle
★★★★★May 2024
“Great Lawyers. Mike Kosner is one of the Premier Trial Attorneys in Illinois.”
— Richard SklareGoogle
★☆☆☆☆May 2022
“They are complete liars . This is a law firm for abuse and neglect and they know I have a case so they say it’s for injuries … so wack and discriminatory”
— Sommer CravensGoogle
Avvo Reviews6 total
See profile on Avvo →★★★★★
Sep 2019
“Child Custody”
— BRYANTAvvo
★★★★★
Jul 2019
“Wrongful Death”
— DauneangelAvvo