Mark H Thieroff

Mark H Thieroff

3.7
Rating: 7.5

Licensed for 23 years

Litigation Lawyer at Minneapolis, MN
Practice Areas: Litigation, Commercial, Real Estate

100 Washington Ave S Ste 1300, Minneapolis, MN

About Mark

Practice Areas

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Licenses

Licensed in Minnesota for 23 years

State: Minnesota

Acquired: 2002

Authorized to Practice

No misconduct found

Location

Siegel Brill PA

100 Washington Ave S Ste 1300, Minneapolis, MN, 55401-2151

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Mark H Thieroff's Reviews

Avvo Review Score

3.7 /5.0

3 Client Reviews

Filter Avvo Reviews (3) Refine reviews to match your needs. Use the filters to quickly surface reviews that align with your case or priorities.
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5 stars 2
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1 star 1
Practice Areas

Showing 1 - 1 of 1 review | General Knowledge

Posted by Mary | May 06, 2026 | Hired Attorney | Ethics & Professional Responsibility

Excellent lawyer/good communicator/ prompt in responding.

"I am sharing this to help others make an informed choice. Based on my experience, this attorney was very efficient at billing and accepting my timely payments, but I felt he failed significantly when it came to communication and advocacy. From my perspective, I received poor advice and saw a lack of... genuine concern for my case.I felt strongly enough to file a complaint with the Minnesota Office of Lawyers Professional Responsibility (OLPR). The process took over a year and required constant prodding from me. While the OLPR ultimately found the evidence did not meet their high 'clear and convincing' standard for discipline, I was left disheartened. My takeaway from the process was that the system is incredibly difficult for a layperson to navigate. As the saying goes, 'It all depends on whose ox is being gored,' and in this situation, I felt the burden of his lack of diligence fell entirely on me.This was a financially and emotionally exhausting encounter. I was naive and trusting, and I feel that trust was exploited. Fortunately, I later hired Mark Thieroff of Siegel Brill. He was excellent--keeping me informed and resolving my situation with the utmost professionalism.Based on my experience, I would not recommend this lawyer under any circumstances. If you need diligent representation and proactive communication, I suggest you look elsewhere."

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Mark H Thieroff's Lawyer Endorsements

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Experience

Rating:  7.5 (Very Good)

Education

2002

University of Minnesota Law School

JD - Juris Doctor

1996

Yale University

MA,

1992

University of Miami

B.A.,

Languages

English

German

Avvo Rating

Our Rating is calculated using information the lawyer has included on their profile in addition to the information we collect from state bar associations and other organizations that license legal professionals. Attorneys who claim their profiles and provide Avvo with more information tend to have a higher rating than those who do not.

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  • Discipline Disciplinary information may not be comprehensive, or updated. We recommend that you always check a lawyer's disciplinary status with their respective state bar association before hiring them.
Avvo Rating Levels
10.0 - 9.0 Superb8.9 - 8.0 Excellent7.9 - 7.0 Very Good6.9 - 6.0 Good5.9 - 5.0 Average4.9 - 4.0 Concern3.9 - 3.0 Caution2.9 - 2.0 Strong Caution1.9 - 1.0 Extreme Caution