The doctor who performed surgery on Taylor Armstrong the night her husband Russell beat her did not report the incident to police ... even though medical professionals must report suspected domestic abuse ... sources tell TMZ.
As TMZ first reported, Taylor revealed to her "Real Housewives" cast mates that Russell beat her so badly in June, she ended up in the hospital with broken bones in her cheek.
Sources say the police never interviewed Taylor following the beating ... something they would have done had there been a report of domestic violence.
We're told the doctor who performed the surgery was NOT Adrienne Maloof's hubby, Dr. Paul Nassif.
In addition to the surgeon, the hospital staff also failed to report the incident.