John Grunenberg joined Guidepost Solutions in 2015 after spending more than 33 years with the New York State Attorney General, Medicaid Fraud Control Unit. He most recently served as its Supervising Auditor Investigator where he managed several Medicaid Provider investigations and developed audit plan working with legal staff and investigators. Mr. Grunenberg worked closely with staff to identify overpayments and prepare them for investigative case interviews and grand juries. His responsibilities also included reviewing prescriptions for controlled substances in conjunction with the New York State Department of Health and the BNE database for prescribers of controlled substances; and identifying physicians who prescribed opiates and other drugs without medical justification. He is credited with supervising diversified cases that resulted in criminal convictions and civil restitution in excess of $1,500,000.
While with the Medicaid Fraud Control Unit, Mr. Grunenberg also served as a Senior Auditor Investigator where he independently worked 3 to 4 investigations of Medicaid providers at a time; conducted on site provider audits, reviewing their documentation to support payments; participated in interviews of all accounting personnel and most non-target witnesses; subpoenaed bank records, credit card statements, cell phone records and EZ pass records on investigative targets, identifying conflicting data with previously provided statements and documentation; prepared questions and documents for investigators conducting target interviews; prepared documents and testified in grand juries and trials; and obtained criminal convictions against doctors, dentists, nurses, home health aides, their supervisors and multiple transportation providers, obtaining restitution in excess of $1,500,000.
Mr. Grunenberg has been engaged in multiple monitorships within the construction industry. He has reviewed Certified Payrolls and supporting documentation to identify errors, correct reports, and confirm employees have received the full proceeds of their paychecks. Mr. Grunenberg has reviewed multiple construction projects confirming the accuracy of general contractor reporting to the MTA with compliance of M/W/DBE participation requirements. He has reviewed M/W/DBE subcontractor contracts, change orders, requisitions, invoices and vendor payments, verifying the accuracy of reported payments on Form 15A.3 and Form E submissions to the MTA.