GREAT NECK - Federal agents seized nearly $1 million from a Great Neck doctor accused of writing phony prescriptions.Dr. Eric Jacobson is accused of collecting up to $20,000 per day for the bogus prescriptions he allegedly wrote.He's also suspected of being one of the doctors who prescribed medication to David Laffer, who is serving a life sentence after killing four people inside a Medford pharmacy last year.2 LI doctors, nurse practitioner held without bail in drug case