HHS-OIG FOIA Production (Senator Cardin Intervention) – University of Michigan Medical Billing Complaint and Investigative Materials

HHS Office of Inspector General records produced in response to a congressional inquiry and Freedom of Information Act appeal regarding a July 20, 2017 University of Michigan medical billing complaint (case #5-17-0-0192-4).

Notably, the opening October 6, 2017 HHS-OIG Investigative Memorandum reproduced below stated that HHS-OIG was the “sole investigating agency at this time,” a chronology point later placed in additional context by subsequent FBI records released through FOIA.

Released records reflect that the original HHS-OIG medical billing complaint later developed into an investigation involving the ALS research grant supporting the work of Dr. Foerster and Ms. Altaee.

The released HHS-OIG records include references to investigative media originating from the Ann Arbor Police Department, including an AAPD DVD identified within the responsive materials containing August 2017 “Nick” communications and related materials concerning Dr. Paul Cronin.

The January 2024 HHS-OIG release identified case number 5-17-0-0192-4 in connection with a University of Michigan medical billing complaint, allowing that complaint to be matched to the same HHS-OIG case number previously associated with the NIH ALS grant investigation.

Dr. Petrou subsequently stated that she did not submit the complaint attributed to her and formally requested removal of her name from the complaint record. No response to that request is reflected in the released materials.

Related material


Congressional inquiry and FOIA appeal submitted through the Office of Senator Ben Cardin.


Privacy Act authorization and correspondence submitted through the Office of Senator Ben Cardin in support of a FOIA appeal regarding complaint/case #5-17-0-0192-4.


HHS-OIG FOIA determination issued May 1, 2025.







HHS-OIG FOIA determination identifying responsive investigative memoranda and interview records associated with complaint/case #5-17-0-0192-4.

Twelve pages of records were identified and partially released.

Author Image

Brad Foerster, MD PhD

Brad Foerster is a FOIA advocate documenting requests, transparency disputes, and accountability investigations involving public agencies, universities, police oversight, and Russia-Gate related inquiries. His work compiles original documents, timelines, and analysis of public records and institutional responses. Brad is also a board-certified radiologist, author of Town & Gown, and has published over 40 peer-reviewed articles. Brad lives in Potomac, Maryland with his family and is active in the Montgomery County Medical Society and the Takoma Park U.S. & World History Book Club.