My husband is on a fairly low dose of prozac (fluoxetine).. he has a pattern of aniety, then anger, followed by abusive behavior to me. can i call his dr?

Yes: While the dr will not be able to talk to you about his treatment, you are able to provide information (/"collateral") addressing how the patient is responding to treatment for consideration. Ideally your husband will give the dr consent to speak with you for a more rounded conversation.

YES, please do: Your husband sounds like he's having a lot of difficulty, and some of these signs could be related to the prozac (fluoxetine). Alternatively, the Prozac (fluoxetine) may have been prescribed to diminish aggressiveness -- i don't know. Do call his physician. And if you are in danger, please get out of the house, call the police, and stay with someone else until this is resolved.

Yes or the police: Yes, and you can also call the police depending upon how abusive he is.