Veterinarian Fran Freemyer from Greeley, Colo. is accused of practicing medicine on a man, allegedly causing him to have several toes removed, police said.

According to multiple reports, the veterinarian provided unauthorized medical treatments, and was cited for practicing medicine without a license.  Freemyer works at Eldred Small Animal Hospital at 1825 9th Street.

Officials are concerned the veterinarian may be treating other people.

"Police said North Colorado Medical Center in Greeley contacted them earlier this summer about a patient who said they were treated by Freemyer," CBS Denver reports.  "The patient, whose identity is not being released, had to have surgery to remove three toes after seeing Freemyer."

According to CBS Denver, Greeley police released the following statment:

"At this time, police believe others may have been treated by Dr. Freemyer and are asking that anyone who may have received treatment or who may have information regarding this investigation to contact Detective Mike Heck at 970-350-9617."

Though Fran Freemyer is not a doctor and does not have a license to practice medicine, there are physcians making headlines about their recent malpractice on patients.

ABC News reports Dr. Farid Fata, 48, of Oakland Township, Mich., allegedly gave ''unnecessary chemotherapy to patients in remission' and deliberately misdiagnosed patients in order to defraud the federally-funded health care program of approximately $35 million over a two-year period, according to the complaint."

Fata was taken into custody Tuesday, and booked in the Wayne County Jail in Detroit, Mich.  Fata owns Michigan Hematology Oncology Centers (MHO), where "federal officials raided his offices, seizing medical records to build their case," according to ABC News.

"Violating a patient's trust and placing them at risk through fraudulent abuse of our nation's health care system is deplorable," FBI Special Agent in Charge Robert D. Foley III said in a news release.