Lonny Rosen, C.S., Government Attorney in the United States
focused on Government, Health Care, and Securities
Dedicated government attorney.
Practices in
Are you Lonny Rosen, C.S.?
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Quick answer
Lonny Rosen, C.S. is an attorney based in Toronto, ONTARIO. The practice focuses on Government, Health Care, and Securities. Currently practicing at Rosen Sunshine LLP.
- Based in
- Toronto, ONTARIO
- Experience
- attorney
- Known for
- Government · Health Care · Securities
- Handles Government, Health Care, and Securities matters from Toronto, ONTARIO.
- Recognized with Lawyer of the Year — Health Care Law, Toronto (Canada) (2026).
About Lonny Rosen, C.S.: Lonny Rosen, C.S. is an attorney based in Toronto, ONTARIO. The practice focuses on Government, Health Care, and Securities. Currently practicing at Rosen Sunshine LLP.
Areas of practice
Practice areas handled by Lonny Rosen, C.S.
Lonny concentrates on government, health care, and securities. Each area below outlines the kind of case Lonny handles, typical outcomes to expect, and how the intake process starts.
Government
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Health Care
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Securities
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Government cases nationwide
Lonny takes government matters nationwide. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Lonny agrees to represent you.
Health Care cases nationwide
Lonny takes health care matters nationwide. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Lonny agrees to represent you.
Securities cases nationwide
Lonny takes securities matters nationwide. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Lonny agrees to represent you.
Biography
About Lonny Rosen, C.S. — Attorney of the U.S. government experience
Lonny Rosen, C.S. is an attorney based in Toronto, ONTARIO. The practice focuses on Government, Health Care, and Securities. Currently practicing at Rosen Sunshine LLP.
Lonny Rosen is a founding partner of the Toronto, Ontario health and regulatory law firm Rosen Sunshine LLP. He has been certified by the Law Society of Ontario as a Specialist in Health Law.
Lonny advises on a wide variety of health and regulatory law issues. His clients include health care professionals, administrators of health care facilities, professional associations, and individuals. He represents clients in a range of civil and administrative proceedings, including in complaint and discipline matters, investigations, audits and peer reviews, hospital privileges disputes and in hearings before various health tribunals. He also serves as independent legal counsel to Discipline Committees of professionals’ governing bodies.
From 2012 until his term expired in 2022, Lonny was a Senior Lawyer Member of the Consent and Capacity Board. He has served as Chair of both the OBA and CBA Health Law Sections and was a Director of The Advocates’ Society. He is a member of the governing council of the Medico-Legal Society of Toronto. He frequently writes and speaks on health law issues and is an Adjunct Professor of Osgoode Hall Law School, teaching Health Law. In June 2016, Lonny was named the inaugural recipient of the OBA Susan Hilary Davidson Memorial Award for Excellence in Health Law.
Lonny was included in the Canadian Legal Lexpert Directory as “Repeatedly Recommended” for Life Sciences & Health and “Consistently Recommended” for Professional Liability. He was named to “Best Lawyers in Canada” for Health Care Law every year since 2014 and since 2020 has been included in Who’s Who Legal as a Global Leader in Health Care Law, receiving the ranking of “Recommended”, as well as in Chambers Canada Guide 2022 in Healthcare: Contentious - Nationwide – Canada.
Working with Lonny on a government matter
Lonny Rosen is a founding partner of the Toronto, Ontario health and regulatory law firm Rosen Sunshine LLP. He has been certified by the Law Society of Ontario as a Specialist in Health Law. Lonny advises on a wide variety of health and regulatory law issues. His clients include health care professionals, administrators of health care facilities, professional associations, and individuals. He…
Clients Lonny works with
Lonny reviews new inquiries case-by-case for government, health care, and securities matters in the United States.
Credentials
Lonny Rosen, C.S.'s legal education and bar admissions
Osgoode Hall Law School
LLB · 1996
Lonny studied at LLB in Osgoode Hall Law School.
Law school and academic background
Lonny completed LLB in Osgoode Hall Law School. Formal legal training is one signal of substantive knowledge — the day-to-day practice Lonny runs in the state is where that training gets applied to real client questions.
Recognition
Awards, publications, and recognition of Lonny Rosen, C.S.
Lonny has received 6 formal recognitions from bar associations, industry bodies, and peer-review services.
Lawyer of the Year — Health Care Law, Toronto (Canada)
2026
Best Lawyers in America — Administrative and Public Law
2026
Best Lawyers in America — Health Care Law
2026
Best Lawyers in America — Privacy and Data Security Law
2026
Best Lawyers in America — Awards:
2026
Best Lawyers in America — OBA Susan Hilary Davidson Memorial Award for Excellence in Health Law (2016)
2026
Legal awards and honors
Lawyer of the Year — Health Care Law, Toronto (Canada) (2026). Best Lawyers in America — Administrative and Public Law (2026). Best Lawyers in America — Health Care Law (2026). Best Lawyers in America — Privacy and Data Security Law (2026). Best Lawyers in America — Awards: (2026). Best Lawyers in America — OBA Susan Hilary Davidson Memorial Award for Excellence in Health Law (2016) (2026).
Locations
Lonny Rosen, C.S.'s office in Toronto
Lonny's primary office is at 212 Adelaide West, Suite 200, Toronto, Ontario. In-person meetings are by appointment; a phone intake usually comes first.
Client feedback
Client reviews of Lonny Rosen, C.S.
Lonny has not yet collected verified client reviews on LawyersListed. Reviews here are all from confirmed clients; anonymous ratings are moderated out.
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Schedule your consultationHiring guide
How to hire Lonny Rosen, C.S. — what to expect in your first consultation
Working with a new government attorney should feel structured. Here's how the first two conversations with Lonny usually go, from the moment you request a consult to the day representation begins.
Consultation formats and pricing
Lonny charges for the initial consult. That fee is credited toward representation if you retain Lonny'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; Lonny will tell you what matters and what doesn't.
Questions to ask a government attorney in your state
A short list to run through before you commit: How many government 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 Lonny
Lonny discusses fees during intake so the arrangement fits the matter. Contingency, hourly, and flat-fee options are all common in government practice — ask which fits.
Hourly rates, contingency fees, and flat-fee options
Every government 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. Lonny confirms the model in the engagement letter before any work starts.
Payment methods and payment plans
Lonny's office accepts standard payment methods. Ask about payment plans if the retainer is a stretch — many government practices work with clients on structured schedules.
Frequently asked
Frequently asked questions about Lonny Rosen, C.S.
How much does it cost to hire Lonny for a government case?
Cost depends on the type of matter, the fee model (contingency, flat, hourly), and how contested the case becomes. Lonny walks through the likely range during the consult so there are no surprises.
Does Lonny offer a free consultation?
Lonny charges for the initial consult; that fee is credited toward representation if you retain Lonny's office. Some government attorneys offer free consults — check Lonny's current terms during booking.
How long do government cases in this state typically take?
Simple government 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. Lonny gives a realistic estimate for your facts at the consult — vague answers here are a red flag.
Can Lonny take my case if I'm outside the area?
Lonny evaluates matters case by case. If the venue is outside Lonny's regular jurisdictions, the intake call will confirm whether direct representation or a referral makes more sense.
What should I bring to my first meeting with Lonny?
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. Lonny will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.
Is Lonny accepting new government clients right now?
Lonny's intake status shifts week to week. Submit the form; the office will confirm availability or refer the matter out.