A New Hampshire doctor was arraigned in federal court in Vermont this week on charges that he wrote unnecessary prescriptions in exchange for cash, prosecutors said.

According to court documents, Grantham’s Adnan S. Khan, M.D., 48, orchestrated the alleged prescribing and health care fraud conspiracies through New England Medicine and Counseling Associates (NEMCA), which operated a network of clinics located in Vermont, New Hampshire and Maine.