Dr. Rettinger has been my doctor for the past 18 years. He always takes the time With me and always is thorough. He answers all my questions and keeps me up to date. He has been with me all through thyroid cancer and wellness. Thank you Dr. Rettinger. I wouldn't want anyone else to be my Endocrinologist. read more

I have Thyroid nodules. I was not happy with another doctor I'd been seeing. I researched other doctors in the area and I am so glad I found Dr. Rettinger. He is so thorough , caring and calming. He takes the time to really listen to you . He also has a great office staff. I highly recommend him. read more

A Doctor is only as good as his Staff and this is where Dr. Rettinger falls down. The staff overall seem to be overly busy, not sure if due to competence, or not enough staff, so they drop the ball constantly. Average hold time is 20 minutes....Have to have reports re-faxed to them multiple times...Time for a new Office Manager? As far as the Doctor - he knows his stuff.....so he would get 5 stars for his expertise read more

Pros: Great reputation Very high concern for patient well being Professional Thourough Willing to explain procedures/symptoms Cons: Sometimes there is a wait time. However, what good Dr doesnt have a wait time? read more

Dr. Rettinger's office has been my endocrinologist for about the last 15 years. Most recently after some surgery their staff was very compassionate and accommodating for scheduling and listening to my individual issues, both the medical assistants and nurses, and especially Cynthia D'Angelo, who is the Endocrinology Physician Assistant. I just can't say enough about their willingness to accommodate and call back and answer questions. What a great blessing for their responsiveness. read more

Dr. Rettinger is a very warm, caring individual. He is very knowledgeable about endocrinology. I recommend his services. The staff is good and friendly. Oh, don't try to shake Dr. R's hand, he will offer you an elbow instead for an "elbow bunp" ;) read more

Great doctor, providing excellent informative care to his patients keeping in mind their individual well beings.

I was referred to doctor Rettinger by my general practitioner. I had some lab results come back with less than optimal thyroid levels. I have been having all the symptoms of hypothyroidism for many years so to find a reason for the problems was a relief. I got my appointment with Dr. Rettinger and was excited to speak to him as I have heard really great things about him. Everyone at the office was so nice and Dr. Rettinger himself is a sweetheart. Very nice man. He did tell me however, that my doctor must have made a mistake reading my labs because my levels were all fine (really, my doctor just misread labs, unlikely). I did some of my own research and found out that while I was in a "normal" range, I was not in an "optimal" or "functioning" range. Not even close. Even with their "normal" range, I was right on the brink of abnormal. The doctor and I went through the list of symptoms and I had experienced probably 8/10 on the list. He came to the conclusion that I was healthy as a horse and nothing was wrong with me! With borderline lab results and significant symptoms, I would have to argue that he is wrong. Now I wasted over 2 hours with the appointment, and my copay. I have to go back to my general practitioner to get a different referral for another doctor that might actually take me seriously. The only reason I give two stars is because everyone in the office was very nice and the process was pretty quick and simple. read more

Dr. Rettinger is so warm and welcoming. Set me at ease right away. He is very thorough, and does an excellent job explaining everything...and very patient!....making sure I understood my diagnosis. read more

Dr. Rettinger literally became hostile towards me when I told him I saw a neurosurgeon for my pituitary tumor which was recommended by my PCP. I told him I am concerned about issues including not being able to lose weight given my healthy diet. He told me to eat less and exercise more. I am now seeing Dr. Jinsun Choi, a fantastic Endocrinologist who shares my concerns and referred me to Hoag's head of Pituitary Neurosurgery Dept., Dr. Robert Louis. Dr. Louis is concerned about my high IGF levels, something Dr. Rettinger never addressed. I am now scheduled for surgery. read more

Together with others on his team, Dr. Rettinger saved my life. He wrote the protocol on treating thyroid cancer, and truly, his knowledge and expertise was only one of the great things about him. I loved his bedside manner. He's just fantastic. read more

Going to give a 3rd shot tomorrow to book an appointment but I really can't stay on hold for 10 minutes to get hung up on, then another 20 while trying to get an appointment booked. If you fail me a 3rd time I'm going to have to get a referral from someplace else. read more

Dr Rettinger rocks. I am a doctor myself and after two visit with him, I am a ardent fan of his. I am a doctor myself and cannot say enough good things about him. He is patient, thorough, encouraging and a truly caring doctor. He is one of the best I have met, and hope that all doctors learn to be like him. He is a ROCK STAR!!! Thanks Doc!! read more

I don't get to see this doctor, but the Nurse Paractioner, whom I like very well after 1 year. Pros: My nurse practioner does not have the cons listed for Dr. Rettinger. Wait times are minimal Cons: as previously noted, their staff is for the birds. They rarely answer the phone, rarely return voice messages or even prescription refill requests from pharmacies. My last dealing took me several days to get a request for new test strips in. by the tiem I got service on this, she requesting the wrong type of strips and now again I cannot reach anyone to speak t and have not had a message returned. read more

I have seen Dr. Rettinger on and off for my health for years. Recently I returned to his office for some concerns to be greeted with the warmest staff and doctor. I was able to get an appointment very quickly. During my call his staff, especially the front office manager, was incredibly compassionate, kind, understanding, and so open. I am truly grateful that they listened to my concerns. At my appointment, Dr. Rettinger listened to my every word, performed a thorough examination, and took the time in deciphering my lab work. I couldn't be more pleased with the treatment I received as a patient and the kindness shown to me. He was professional, warm, encouraging, thorough, and offered excellent suggestions. Thank you all so very much for the treatment received. read more

Dr. Rettinger is an excellent physician, and he is thorough and caring. His explanations are detailed and appreciated. Unlike most of my other doctors, I don't feel like I'm being rushed in and out. This does, many times, have an adverse effect on wait times. It's a busy office, with several physicians, so the front desk and back office staff are busy, but they are friendly and efficient with the large volume of patients. I see Dr. Rettinger for hypothyroidism after surgery to remove half my thyroid gland, and couldn't be more pleased with him. Highly recommended. read more

I'm very disappointed with dr rettinger. He refused to see me after I had a thyroidectomy in 2013 and told me after 3 years we would not be "friends" any longer. I have never complained about a doctor before but this is unacceptable. Was told to go to my primary physician after complaining of a feeling of obstruction in my throat. I think this is unacceptable. His staff are really uncaring and busy The staff are ridiculous. Have been messed around for two days and eventually asked for my records and they have the nerve to tell me there is a charge if $48 to pick them up? Unacceptable. Have never been treated so badly by a doctor and staff. read more

The front office staff is incompetent. I've gone here for 3 years and early on they failed to obtain referrals, had billing problems, lost prescription refills, and I have practically waited an hour each visit to the the Doctor. Today was the last straw for me waiting one hour to see the Doctor. Changing doctors! read more

I have been going to Dr. Rettinger's office for 25 years now and appreciate everything they do. It's a complicated specialized business they are in, with so much to do and know at every visit. They always strive to appropriately care for all of my many needs and I appreciate the intelligence and effort they put forth. My hats are off to Katie and Lisa at the front office area, handling so many 'issues' each and every day continually can't be easy. Thank you for all you do! read more

Dr Herbert is very well known in his field. He is very professional and seems really care what the patient is going through. So far I can't comment on his med skill since it's only been a couple of times we visited him. I agree with others on the cons: super long wait ( 2 hours wait last time!) I also have to stress that his stuff are really not pleasant! No greetings either over the phone or in person. Very bad manner if you are asking questions. Basically they are just damaging Dr. Herbert's business in my opinion. read more

I have been a type 1 diabetic for approximately 47 years and have been a patient of Dr Herbert Rettinger for approximately 35 years. Thanks to Dr Rettinger I have been able to live a healthy and prosperous life with out any negative impacts from diabetes. Dr Rettinger is an amazing human being with a great deal of experience and knowledge combined that has changed my life forever. His office staff has always been exceptional as well. Randy Bice read more

I've been a patient for 14yrs and been lost through the system.I recently made an appointment with Rettinger office because Walgreens denied my refills for a pituitary tumor,so I called office and they said it's been 4yrs since last visit! It's horrible that I haven't been contacted by my doctor...Now with a hardship in life I have no medical insurance and been paying cash for precipitation's,the office either staff has no compassion or are ignorant by looking at my file want to charge me a 250$ office visit. Fuck them! Not to mention this is how close they look at my file my condition is terminal... read more

Hi drove 5 hours to go see Dr. Rettinger. I had been feeling exhausted and not myself for some time. My family Dr. had put me on a few thyroid medications, but I felt worse than ever. After Dr. Rettinger examined my blood test results, he quickly adjusted my medication amounts, and dropped one medication all together. Dr. Rettinger was professional, warm and funny! I have to say, I felt so comfortable and at ease with his manners. He made my husband and I laugh too. Within a few weeks, I was feeling like a new woman. He is definitely worth going to see. The whole staff was excellent. : ) I wish I had gone to him sooner instead of suffering these last few years. read more

I just came back from seeing Dr.Herbert Rettinger at Endocrinology Medical Group and must say that I feel so grateful for the excellent care that he continues to give to me over many years. The staff was friendly and efficient and I felt an immediate comfort level which is so important when seeing a physician. read more

Dr. Rettinger asked me questions about medications, checked lab reports and asked what my daily meals consisted of. He did a physical examination. He absolutely knew what my issue was and advised me on dietary changes to avoid the combination of medicines I had been taking which had made me feel unwell. I found him extremely pleasant and did not try to rush me out of the office. He listened to my concerns. He is very Professional and extremely experienced in diabetic care. I do believe that by following his instructions that I may be down to one or two medications instead of the four or five I had been on. My visit to him was very empowering, he reminded me how important diet and exercise is and above all he believed in me to take control of my diabetes. I am so happy to have found this Doctor. read more

Office staff is not compassionate and will make you reschedule if you are ten minutes late. I always have to wait at least 45 minutes to an hour to see the doctor and during that time, there are always people complaining in person and over the phone. You always feel rushed when they are "helping" you, like they want to get you out of the way. When calling over the phone, they always refer you to a voicemail whenever possible. read more

Dr rettinger was one of my doctors when I used to live in Southern California. His office staff could have been a little less rude and wait times could have been better. But the quality of care you get from him is super amazing!!! His bedside manner is great, he is nice, comforting, and extremely humble. He was a one stop shop. He would be able to do my ultrasound guided biopsies in office. I also used to come in contact with a few of his patients while working in a hospital. He would have us call him personally for any slight change in status even if it was a normal or expected change. For example, he would write orders to call him and report normal fasting blood sugar levels. He seemed to know all his patients inside and out. From a patient stand point he is amazing. And from a clincial stand point he is remarkable!!! I love him and miss him and wish to find a doctor just as wonderful as him. 6 years later I am still searching. read more

Dr Rettinger is an amazing doctor. He is one of the best, probably the best Endocrinologist in southern CA in my opinion. A caring doctor who is a doctor for all the right reasons and it shows. He is very easy to talk with, and does not rush your appointment nor does he ignore your opinion or concerns. Everything about Dr Rettinger is positive and worthy of mention. read more

He has been a blessing in many ways. He really was the only dr that was able to really figure out that it was my thyroid. He also was an amazing support when we went through a small cancer scare. I love this guy, he takes the time to listen and he really also knows how to find the solution. I have been with him for about 12 years and he really is a great doctor. read more

Doctors, like beauty, are in the eye of the beholder. I like Dr. Rettinger a lot. He was referred to me by my Internist-Cardiologist. The first time I had to see him he was booked solid but made time for me at the end of his patient day, so I got in the same day I was recommended to him. I tend to be independent, questioning and, on occasion, obstreperous. But Dr. Rettinger always listens, makes his suggestions and explains anything that needs explaining. I don't accept recommendations unless the Doctor has a sense of humor (yes, this is really important), will take the time to listen, and is tops in his field. Dr. R meets all of my requirements and I have been a patient for many years. We don't always agree but we respect each other. He found a problem with my parathyroid, which he tracked till it needed to be operated on and now he tracks my thyroid. I highly recommend him. read more

Whenever I get a referral from my primary doctor, I always go to the reviews before scheduling my appointment. I was very happy with his consultation in regards to my thyroid. He has a sense of humor and provides a non rush exam. Even with the wait time for my appt, he is worth seeing again. The staff I found to be kind and offered water to patients waiting. One of the good ones and I would recommend to my friends! read more

Dr Rettinger is truly one of the best in OC. He is very pleasant, extremely competent, professional and I never felt rushed as he takes his time explaining everything I need to know about my case. I have seen him a couple of times within a year and my condition had dramatically improved. He is an excellent endocrinologist and I wouldn't think of going anywhere else. Molly at the front desk is also very accommodating. I was a few minutes late due to traffic and made sure that I still got to see Dr. Rettinger. read more

Dr. Rettinger is an awesome doctor, I was referred to him by my dermatologist. He explained everything and right on the spot did an ultrasound on me. He is a very nice man, very professional and sweet guy. read more

I have never written a negative review, it takes a lot for me to become upset. But this office has been such a negative experience that it needed to be written. I have been a patient here for almost 2 years and have never seen any of the doctors in the group. I have had two different lab results lost. They do not have the ability to send a lab request directly to a lab so I have had to physically drive to their office and pick up a lab slip each time. And I am yet to be called back when they say they are going to. The straw that broke the camels back was this last time when because of a pregnancy, the prescription I needed was time sensitive. After the front desk told me someone would be calling me back shortly, I yet again never was called back. The following day when I called two more times, I was only sent to an answering machine. It is sad that there are so few endocrinologist offices in orange that this office continues to get business. read more

I have never written a negative review, but this time I feel it is my duty to provide this information. I can't believe a medical facility could behave as irresponsible as the staff of Dr. Herbert Rettinger have done. I had some test results that come back with cancer suspicious result. A little more than 2 months ago, I called for an appointment and although I requested to see doctor as soon as possible because of the test result, I was given an appointment in 2 months. After waiting all these times (more than 2 months later) I received a call from his office stating that effective July 1st their office doesn't accept my insurance any more. Anytime insurance changes happens, the physician's office should be aware a few months prior to the change and inform patients immediately. It will be at least one more month before another Endocrinologist gives me an appointment. When it comes to situations that TIME could make all the differences, medical personnel should remember that many times life and death of patients depends on them. read more