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    Michael L. Chang, DO

    4.8 (25 reviews)
    Open 8:00 am - 5:00 pm

    Michael L. Chang, DO Photos

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    4 years ago

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    7 years ago

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    3 years ago

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    4 years ago

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    4 years ago

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    3 years ago

    Kind, patient, gentle, and total professional. A very good doctor! I would like to recommend Dr. Chang to all my friends and relatives.

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    3 years ago

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    7 years ago

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    6 years ago

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    7 years ago

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    7 years ago

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    8 years ago

    Doctor Chang is amazing! He has the best bedside manner, is patient, listens and doesn't rush you and most of all is very knowledgeable.

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    8 years ago

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    8 years ago

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    9 years ago

    Dr. Chang is always very involved in our health. He is easy to talk to and a nice person.

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    7 years ago

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    9 years ago

    Dr Chang is personable and thorough. He's a great listener and always follows through. Excellent service!

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    9 years ago

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    7 years ago

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    9 years ago

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    5 years ago

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    9 years ago

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    Ask the Community - Michael L. Chang, DO

    Is Dr. Chang an Endocrinologist ? Trying to have my hubby see one for type 1 diabetes.

    No. Primary physician/family care.

    Do I have an appointment with Dr. Chang?

    Hello Beverly, Could you please provide the best phone number to reach you at? We can't seem to… Read more

    Don’t See Your Question? Ask Away!

    Review Highlights - Michael L. Chang, DO

    Dr Chang is very knowledgeable regarding all health guidelines based on the latest evidence.

    Mentioned in 20 reviews

    Read more highlights

    Oconnor Shannon, MD- South Coast Medical Group

    Oconnor Shannon, MD- South Coast Medical Group

    3.3(19 reviews)
    1.6 mi

    I'm a physician and I don't get the bad reviews. I've been around a long time and to me this office…read moreis the way medical offices used to operate. She's an old fashioned family doctor that as a medical professional I find completely competent. There's APA there or an NP by the name of Michaela who is just as sharp. Extremely thorough and knowledgeable. She caught an issue on my high blood pressure meds that no one in the last 15 years has caught and by simply adding something to my meds it dramatically helped improve my blood pressure. I've read comments about not returning phone calls. She's called me twice already on some lab work. The first time she called Without me asking her to call she reviewed my blood work left me a voicemail. There was a issue with my fasting insulin which got me a little nervous I called back within 48 hours she rang me back and got me on the phone personally to address it. I asked her to create some new lab forms so I could have it tested again and she did it without question. I don't know what people expect from a doctor in today's world. There's the real world and there's the hypothetical world In the hypothetical world the Doctor will spend an hour and a half with you and find that every single issue that is of concern but in the real world to be able to survive financially a doctor cannot spend huge amounts of time with each patient and still stay in practice peter I ran a medical practice I could not spend any more than 10 or 15 minutes with each patient or I'd be out of business. Anyway this review is not about me it's about her Dr O'connor and her very excellent nurse practitioner Michaela. I have nothing but good experiences to say and I've been there 4 months now on three separate occasions. My refills are easy to do there's been no argument about running prescriptions for me I would give it a 10 out of 10. I'll add one other point that you might want to take into consideration when looking at these negative reviews. A doctor that has a six week to 8 week waiting list is a popular doctor, and he or she is a popular doctor for a reason. Think about that.

    To me, this practice is dangerous. Read the newest reviews; 2024-25: 6 negative, 1 positive…read more Now make that 7 negative. When people take time to write about their concerns, that is a warning. This doctor may be competent but the practice is a complete mess. She lets an x-ray tech run the place because that person will be rude, confrontational and dismissive. So much for patient care. There are serious issues with professionalism, patient communication and follow up. There is no patient portal; phone calls are literally never returned; there is constant staff turnover and beware if you ever have to deal with the so-called medical director who is named multiple times in the reviews as in need of replacement. I second that. The doctor will not respond to calls or walk-in appointments. Even if your insurance covers it, they will not hold tele-health appointments until you put in your credit card number. What if you have no credit card or donʻt want the world to have your cc number when it isnʻt used? "Itʻs our vendor, we have no control over it." Change your vendor. This is health care, not profit care. The Physicians Assistant will not consult on the telephone. So either find a way to get to the office no matter how sick you are, or forget about it. When I did put in my credit card for the tele-health, the PA prescribed a medicine without noting that it was off the formulary. The co-pay cost me $430. The place is dark, dingy, completely unwelcoming and looks unsanitary. There is no written material to explain to new patients how to navigate the crazy way the practice operates. Staff are polite but depressed; check out Glass Ceiling to see what the staff really think about working there; it is not good. Find another doctor. This place is a nightmare.

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    Oconnor Shannon, MD- South Coast Medical Group

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    Sean Thomas, MD - Big windows...

    Sean Thomas, MD

    2.5(20 reviews)
    1.7 mi

    CANNOT GIVE NO STARS. DO NOT GO HERE! This practice should…read morebe shut down! We have filed a complaint with Kaiser. SO many issues but most important- office called us and said we needed to come in immediately, my husband had a chest xray the day prior. We went in immediately to be told he has a spot on his lung and needs a CT scan. When i asked what it could be the 'Dr.' (asian male) was so rude and uncaring. He replied 'I dont know' and when I asked again, what are the possibilities he said 'I told you I don't know.' We were/are worried sick, WAITING AND WAITING FOR THE KAISER REFERRAL AND WONDERING A MONTH LATER WHY IT STILL HADN'T COME THROUGH. FINALLY, SINCE THEY DO NOT ANSWER THE PHONE WE WENT DOWN THERE. They claimed to have sent it, said, 'we are sending it again, this is the 3rd time.' Kaiser claimed to have no record of anything being sent. COME TO FIND OUT IT WAS BEING REJECTED BECAUSE THEY WROTE THE WRONG MEDICAL RECORD NUMBER!!!!!!!!!! COMPLETE INCOMPETENCE!!! AND THEY DID NOT EVEN APOLOGIZE!!!!! DO NOT GO HERE!!! not to mention a leaky roof, it is dirty, they do not answer phone, they do not put through other referrals, they say they will, and they only take co-payment "exact change cash" - SKETCHY!!!!

    Gone missing. I've been leaving them messages for the past week to renew a prescription. No…read moreresponse. Time for me to find another GP.

    Photos
    Sean Thomas, MD - Seating Area.

    Seating Area.

    Sean Thomas, MD - Might want to clean or replace the chairs... Somebody apparently had an accident...

    Might want to clean or replace the chairs... Somebody apparently had an accident...

    Sean Thomas, MD - Large rooms...

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    Large rooms...

    Ken Iwaoka, MD

    Ken Iwaoka, MD

    1.0(2 reviews)
    1.4 mi

    I Very very displeased with DR Ken Iwaoka's work and lack of knowledge or attention to what's going…read moreon. I brought my baby in because he had a bad accident (burn) on his hand. He was very nonchalant about it making jokes the whole time. He acted like it wasnt a big deal and sent us home with a band aid and said he will be fine. Not feeling comfortable with his attitude and overall medical analysis and advice, we took our baby for a 2nd opinion and thank god we did. His lack of medical knowledge could of led my baby to mucj worse including permanent damage. He has no business being a doctor based on our experience.

    Experience with Dr Ken Iwaoka was very bad. He had that I don't want be here attitude from the…read morebeginning. First, he was not paying attention to what I was saying? (for a suspected meniscus and acl tears, he wanted me to have an xray at urgent care) He was not pleased when I said that I dont want to expose myself to a radiation now and later with MRI. Second, he kept asking me, if I saw an orthopedist before. I told him that I did, but I asked him NOT to refer me to that specific orthopedist (see my review for Dr Richard Lee). In a few minutes Dr Ken Iwaoka brought me a referral letter to that specific doctor!!! I thought it was a misunderstanding and asked him to refer me to someone else. His attitude changed for the worst. He started sarcastically telling me that I did not ask him that earlier. He tore the referral letter he had in his hands, told me that I should see my PCP for referrals and walked out of the room. Wow, just wow. So inpatient and rude, terrible bed side manners!!!

    Hoag Concierge Medicine - Aliso Viejo

    Hoag Concierge Medicine - Aliso Viejo

    3.0(2 reviews)
    1.4 mi

    Not sure the other person's experience buy I've been with this practice for around 10 years. I can…read moretext my doctor at just about any hour of the day or night and get a response, get medications called into pharmacies, schedule bloodwork, office visits, etc... He also handles Iron infusions for me, deals with specialty physicians, and has gotten me into a ortho when the best I could do was 2 months out. It's not cheap, but it's by far the best care I have ever received.

    This concierge doctors office seemed like the real deal. Unfortunately their performance leaves a…read moregreat deal to be desired. I was sent a different patients visit and test results after my first visit, not a start to inspire confidence. I only received part of my own lab work so goodness knows where the rest ended up. They promise to set up physical therapy and exercise regimens but there is no follow-up and nothing happens. Their doctors are supposed to be on call and available to concierge patients through phone and text but it is extremely difficult to get a call back, and the office staff seem to go out of their way to be unhelpful. Calls are not returned, information is not passed on to physicians, and the entire office seems confused. They refer to themselves as a concierge practice but essentially have no idea what that actually should be. Front office staff seem nice but follow up and response is awful. Doctors get impatient with patients because they are being told by office staff that information is being sent out when it actually isn't, and the doctors don't seem to have the time to follow up on anything. A concierge practice that keeps you waiting for two months for lab results, repeatedly telling you that the lab hasn't sent them over when you know very well that Quest diagnostics have results back in a couple of days. Office staff will also tell medical staff that results have been sent out and that patients are somehow mistaken, leading to extreme frustration at the patient level. Doctors seem knowledgeable but are clearly too rushed with too many patients and a very poorly trained support staff.

    Michael L. Chang, DO - familydr - Updated May 2026

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