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Dinsmore & Shohl LLP

Daniel S. Zinsmaster

Daniel S. Zinsmaster



  • Corporate & Transactional
  • Government Relations
  • Government Investigations
  • Audits, Counseling & Training

WSG Practice Industries



Dan provides trusted counsel and advocacy to health care clients on a variety of matters, such as corporate compliance, provider credentialing, administrative proceedings, and litigation. He also advises clients on practice formation and acquisition, as well as contract review and preparation. In recent years, Dan has helped health care companies and providers navigate through fraud and abuse investigations, antitrust reviews, and other white collar criminal matters.  He is a frequent author and lecturer on telehealth and telemedicine issues.

Prior to joining Dinsmore, Dan practiced for nearly seven years with the State Medical Board of Ohio, where he advised board members and agency personnel on issues related to licensure and professional ethics, as well as federal rules and regulations implicating the area of health care. His substantial regulatory experience enables him to bring a unique and insightful perspective to handling diverse and complex health care matters, and his thorough understanding of health care laws and policies helps him serve as a valuable resource to corporations, health care associations, hospitals, medical practices, and individual practitioners.

In addition to his experience with federal and state health care regulatory agencies, Dan successfully counsels clients in the growing areas of cannabis and medical marijuana. He has successfully advised cultivators, processors, and dispensary applicants or license holders in numerous capacities and counseled health care providers and medical centers seeking to incorporate and leverage medical marijuana as a treatment modality for their patients.

Bar Admissions


Court Admissions
    U.S. District Court for the Southern District of Ohio
    U.S. District Court for the Northern District of Ohio


  • Capital University School of Law (2005)
    • CALI Award for Excellence
    • Studied at the Center of International and European Economic Law in Thessaloniki, Greece
  • Ohio University (B.A., 2002)
Areas of Practice

Audits, Counseling & Training | Corporate & Transactional | Government Investigations | Government Relations | Health Care Industry | White Collar Crime

Professional Career

Significant Accomplishments

  • Go-To Thought Leader, The National Law Review (2019) 

Professional Associations

  • Ohio State Bar Association
    • Health Law Committee 
    • Administrative Law Committee
  • Columbus Bar Association, Health Care Law Committee
  • American Bar Association, Health Law Section, Substance Use Disorders Task Force
  • International Cannabis Bar Association
  • American Health Lawyers Association  
  • Society of Ohio Healthcare Attorneys, Ohio Hospital Association
  • Sigma Chi National Fraternity
  • Leadership Columbus


Ohio Board of Pharmacy to Award Up to 73 New Medical Marijuana Dispensary Licenses
Dinsmore & Shohl LLP, May 2021

The Ohio Board of Pharmacy recently announced it will award up to an additional 73 dispensary licenses across Ohio. Dispensary licenses will be awarded through an application and lottery process that is expected to be finalized during the spring or summer of 2021. This expansion will bring the total number of dispensary licenses in Ohio to 130 and is expected to ameliorate patient dissatisfaction with regards to the price of medical marijuana products and lack of equal access...

X-Waiver Changes Axed: Federal Government Backtracks on Previously Announced Rescission of Waiver Requirements
Dinsmore & Shohl LLP, February 2021

Physicians, physician assistants, and advance practice nurses who have sought to treat opioid-addicted patients with Schedule III-V Controlled Substances that have been approved by the United States Food and Drug Administration for that indication have had to apply for a waiver under the Drug Addiction Treatment Act of 2000. Eligible medications are presently limited to buprenorphine-containing products such as Suboxone and Subutex...

WSG's members are independent firms and are not affiliated in the joint practice of professional services. Each member exercises its own individual judgments on all client matters.

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