Hal S. Shimazu

Dr.Shimazu and his team are amazing! They are always so helpful when you may have a problem and go the extra mile to help solve! Dr Shimazu is the best Dr. I have ever had for all these years! He is extremely professional and takes all the extra time to help you!

My husband and I were patients of Dr. Shimazu for over 10 years. He was like the old fashion doctor who knew how to treat any kind of medical problem that came up in our time as his patients. He was up-to-date on the latest medications and knew whether or not a prescription was covered by the insurance. He would literally run from patient-to-patient down the hallway to each of the exam rooms to make sure he didn't keep anyone waiting too long. He practiced medicine on a pro-active basis to assure his patients stayed healthy rather than waiting until they became sick. For many years, we drove 2 hours to our visits to Dr. Shimazu but sadly, when we moved to another state we had to say goodbye. Since then, we've never had a better doctor who actively strived to keep his patients well which he did in a most efficient manner with upmost knowledge. We sure miss him and there is none better!

I saw Ann after waiting for a new patient appointment. It was worth the wait! I came in with a list of concerns and each one was addressed. Two other doctors had been dismissive. At the end of my meeting Ann asked if there is anything else she could help me with. No one has ever offered help before. I have used their app for follow up communication and I receive a response the same day. Thank you.

Staff is friendly, helpful & attentive. I love my NP Ann here! She is down to earth & trustworthy.

Great doctor with staff

Took care of my cholesterol problems

Great Physician! Very smart and detail oriented. Has lots of experience so he likely won't get surprised by your condition. He's well connected with Specialists at St. Joseph Hospital and is a part time Medical Director, so he's well versed in the administrative business. Lastly, he's one of the hardest and most dedicated PCPs in OC. Part of the St. Joseph Hospital Affiliated Physicians (SJHAP) network and available on most HMO and PPO plans.

Dr. Hal Shimazu is a fireball of energy and an efficient, friendly man. My friend& I were wondering what qualities make him so effective-ones we could emulate in our own lives-and we noticed that he habitually gets things done immediately. Be it a an exam or concern, he doesn't set things aside "to do later." He also knows excellent doctors, which makes his referrals particularly helpful! In one case, I needed help connecting to a specialist, and the office staff literally called the office while I was on the phone to make sure it was done correctly! I am SO impressed! This was a difficult specialist to find, and with my insurance, not usually covered. Both were taken care of on the spot. Many thanks, and I'm posting here because I am able to go into more detail than on Healthgrades! :-)

Dr. Hal Shimazu is one incredibly efficient, empathetic, knowledgeable professional! His walls are peppered with awards from the County of Orange to charitable organizations, and he gives excellent referrals. I appreciate his habit of doing tasks immediately, so patients don't wait for care! He tackles what you need while you're with him, so nothing is left to pile up. His office staff are as friendly as he is, & his I am very fortunate to have found such a sweet, energetic doctor!

Consistently thorough and excellent at diagnosing. Our whole family including my 90+ year old mother go to his practice.