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About me

I am admitted to practice in the state courts of Ohio and California, the United States District Courts for the Northern and Southern Districts of Ohio, the United States District Court for the Southern District of California, and the United States Courts of Appeal for the Sixth Circuit and Ninth Circuit.  I have also represented clients in Multi-District Litigation in various federal courts throughout the country.  My practice is concentrated on those injured due to Personal Injury, Medical Malpractice, Defective Medical Devices and Ohio Workers’ Compensation Law.


Photos and videos

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Practice areas


  1. Personal Injury: 80%
    6 years
  2. Nursing Home Abuse: 5%
    6 years
  3. Medical Malpractice: 5%
    6 years
  4. Wrongful Death: 5%
    6 years
  5. Workers Compensation: 5%
    6 years

Attorney endorsements

9 total 

Are you an attorney? Endorse this lawyer

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    Jack is a client oriented advocate who is passionate about his clients' needs. Jack is well-versed in the law. I endorse Jack.


    Matthew Erkkinen
    Relationship: Fellow lawyer in community

  • No photo

    Mr. Hilgeman is a tireless worker and a very knowledgeable attorney. I endorse this attorney.


    Justin Nidiffer Family Attorney
    Relationship: Fellow lawyer in community

Contact info

Horenstein, Nicholson & Blumenthal, LPA

124 E. Third St., Fifth Floor
Dayton, OH, 45402


We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Work experience
TitleCompany nameDuration
AttorneyHorenstein, Nicholson & Blumenthal, LPA2012 - Present
AttorneyCowan & Hilgeman2010 - 2012
Legal InternMontgomery County Prosecutor's Office2010 - 2010
Law ClerkCowan & Hilgeman2007 - 2010
Association namePosition nameDuration
Miami Valley Trial Lawyers AssociationN/A2016 - Present
American Association for JusticeN/A2013 - Present
Dayton Bar Association, Bar Exam and Qualifications CommitteeSubcommittee Chair2013 - Present
Ohio Association for JusticeN/A2012 - Present
Ohio State Bar AssociationN/A2010 - Present
Dayton Bar AssociationN/A2010 - Present
Dayton Bar Association, Civil Trial Practice CommitteeN/A2010 - Present
School nameMajorDegreeGraduated
University of Dayton School of LawLawJD - Juris Doctor2010
University of Cincinnati College of LawPolitical ScienceBA - Bachelor of Arts2007