Daniel Mullen, MD


My grandfather was a cabinet maker and when I was a young boy he gave me my first tool belt. I used to help him after school. I learned a lot about tools and precision, and most of all how much I loved him and working with my hands.
As a young man I got a job in construction. For three years I enjoyed both work and school, and graduated from college in 1992. My family was extremely supportive of me, and recognized my need to do just a little more. I went to medical school looking for a challenge and a hope to put my hands and skills to continued good use by going into orthopedic surgery.
In Baltimore I trained at the Union Memorial Hospital, Johns Hopkins University Hospital, and the Maryland Shock Trauma Center, privileged to learn from some of the best orthopedic doctors in the nation. Success there landed me at the Cleveland Clinic and a position with the Sports Medicine Department where I was a part of the medical staff for the NFL’s Cleveland Browns, MLB’s Cleveland Indians, and the NBA’s Cleveland Cavaliers. We took care of professional athletes, amateurs, and high school kids alike.
In 2002 I came to Arizona to join OrthoArizona and still enjoy taking care of athletes of all ages. I’m blessed with a busy practice and a rewarding career. I specialize in sports medicine, arthroscopic surgery, minimally invasive joint replacements and arthritis management.
Coming to Arizona was a great move for both me and my family. My wife is a pediatrician here, and we have two terrific boys and a beautiful little girl. We enjoy living and working in Gilbert, being a part of this community, and helping our friends and patients stay fit, in one piece and moving forward!

Dr. Mullen’s Credentials



The Cleveland Clinic


Union Memorial Hospital (Maryland), John Hopkins University Hospital/The Maryland Shock-Trauma Hospital

Medical School

Temple University School of Medicine

OrthoArizona Sports Medicine

Gateway Surgery Center

John C. Lincoln Hospital- North Mountain

St. Joseph’s Hospital & Medical Center

St. Joseph’s Outpatient Surgery Center


Patient Downloads


Dr. Mullen is pleased to accept many common insurances for patient convenience. Please check with your primary care physician to find out if you will need a referral for your visit to our office. Please note, insurances accepted are subject to change.

For new patients please print and fill out necessary forms before coming for your first appointment.