Nurse Practitioner, Family in TEMPE, AZ
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Mary Ellen O'Brien is a board-certified family nurse practitioner in Tempe, Arizona. She has been NPI registered since 2007.
Generated from public NPI Registry data only. Not independently verified — confirm credentials directly with the practice.
Dr. MARY ELLEN O'BRIEN specializes in Nurse Practitioner, Family.
Dr. MARY ELLEN O'BRIEN practices in TEMPE, AZ.
Dr. MARY ELLEN O'BRIEN's NPI number is 1285750240.