Medicaid typically has a '5-Year Lookback' rule that applies so that Medicaid can recover the $$$ it spent on nursing home costs etc. However, not all States are the same when it comes to Medicaid so I'd recommend you sit down with a Minnesota Elder Law attorney. You can easily find one on Avvo.com under 'Find-A-Lawyer'. Good Luck on this case.
As noted this is state specific. A local elder law attorney can advise you whether WI has an expanded recovery rule and can recover against non-probate property such as a TOD deed.
As someone noted, gifts made within 5 years are within a 5 year look back period. However, there are 2 issues at play heare. Gifts within the look back period usually (but not always) trigger a temporary Medicaid disqualification period. Regardless of when a gift that takes effect at death is made and even if it precedes the look back period, Medicaid still can recover against the property if the state provides for broad Medicaid estate recovery. Obviously, I'm not answering your question directly, but that is deliberate. No lawyer can (or should) say for sure from a general posting on a site like AVVO whether a particular action will have a particular result because various circumstances not included in the post can affect the result. Therefore, I strongly recommend consulting a WI elder law attorney, since your dad is in a WI nursing home and on WI Medicaid. BTW, there may be things that can be done even now to protect asssets from Medicaid recovery. Since any such opportunities would end once a Medicaid recipient passes away, time is of the essence.
Lawrence Friedman, Bridgewater, NJ. Certified as an Elder Law Attorney by the ABA approved National Elder Law Foundation, former Chair NJ State Bar Association Elder and Disabilities Law Section, Member Board of Consultors of NJSBA Real Property, Trusts & Estates Law Section, Vice Chair Special Needs Law Section of National Academy of Elder Law Attorneys, and Master of Laws (L.L.M.) in Taxation from N.Y.U. School of Law. Visit SpecialNeedsNJ.com for articles and Q&A on elder law, special needs, wills, trusts, estates, and tax and SpecialNeedsNJ.com/blog for timely updates. Information on both Avvo and SpecialNeedsNJ.com does not constitute legal advice, as it is general in nature and may not apply to your situation or be subject to important changes. No attorney client relationship exists unless set forth in written engagement terms.