If you are female-presenting, value your time or money, or want a medically-supported diagnosis and treatment: find another endocrinologist. Dr. Frank Hsu does not deserve a star. He does not deserve your business. He does not deserve to have a license or be a practicing medical professional of any kind. In a single session he chastised me for not being on birth control and lectured me on the efficacy of condoms (despite the relief I've experienced since getting off of birth control, and a conflicting response giving hormones play a big role in endocrinology, and as I was not requesting support on the matter or prevention of pregnancy), ... denied the existence of treatment options for Hashimoto's disease (despite synthetic thyroid hormones being one prescribable option), ... and refused to request a full thyroid panel including antibodies (which are used to identify this autoimmune disorder) until I persisted by pointing out that it would at least rule it out as a diagnosis and insisted on getting it, ... made me exceedingly uncomfortable during the physical exam even with a female nurse in the room (who was visibly uncomfortable herself and made it further awkward) by providing a gown that was so small I could not cover my legs, crotch, belly, or part of my breasts (I'm slightly overweight but not obese), ... not wearing gloves during the breast exam, ... instructing me to only pull my underwear half way down my thigh to examine my vulva while standing by my waist (a rather ineffective positioning), ... and by inappropriately pushing my shoulder when he wanted me to lay down or sit up (making me feel like a reclining chair). In addition to Dr. Frank Hsu's outdated, misogynistic and unscientific practices, his office is run poorly: no voicemail (requiring patients to call multiple times - try a dozen over a few days just to make my initial appointment), hardly any online presence (which would have helped to know what the office hours were and correct address in Castro Valley), poor management of paperwork (my PCP had to resend my referral documents three times and through Stanford Health online), they flat out lied to me (when my bloodwork was returned by Quest Diagnostics and was missing a lipid panel, I called Dr. Frank Hsu's office to ask why and they lied, telling me they never authorized the panel but if I wanted it still I would need to make another appointment and request it), and they try to maximize their profits by seeing multiple patients simultaneously (it was a 15-20 minute wait after I changed into my exam gown, and 15-20 minute wait after I changed back out of it). I commuted more than an hour each way to see this "specialist" referred to me by my doctor, unfortunately without doing my own research first. Hopefully my review will prevent someone else from having such a poor, and in my case unsettling, experience. I have also let my PCP, Dr. Lilian Tsao know that she should not recommend this man. She is a respectable doctor and thanked me for letting her know, and that he would be removed from their referral lists. read more

Was referred to Dr. Hsu by my allergist, who has high regard for him. I made an appt. about a month ago and got my blood work faxed over, but got a call the day before my appt. saying they were cancelling my appt. because they don't accept my insurance (Blue Shield through Covered California - aka "Obamacare"). What amazes me is that I can't even go as an "out of network" patient, where the insurance company will still pay something, but not as much as "in network". I was given no options. They simply suggested that I find another doctor. How rude! read more

All for the name of love man.. and you know love my momma because I'll be waiting at this darn place with her for 2 hours just for his 5 min consult where the info he really uses is from her blood test outcome. Just tell me over the phone next time okay!! He doesn't have good bedside manners and is quite awkward! read more

My experience was completely positive. Dr. Hsu was knowledgable, kind, and attentive. He was careful to ask whether I had questions, and he answered my questions clearly and simply. The exam was thorough. The staff was polite and professional. That other review -- the extremely negative one -- is very strange. If it's authentic I think it represents a rare occurrence. I find it really hard to believe he's talking about the same doctor I saw. read more

the doctor is complete asshole. tells people to switch their insurance so he can get paid more. charges people if they are late. even though you have to wait 45 minutes in the waiting room. if you don't show up or call in an cancel the same day he charges you $50. he schedules multiple people at the same time. must of had at least 4 patients scheduled same time. he don't care about patients he just cares about money. he turns around has the receptionist talk to and give medical advice to a patient while he goes to the office calls up another patient to do a collection. read more

Terrible. I've had juvenile diabetes for 30 years, and he gave me advice like, "You want to avoid low blood sugars." Really? It's one of the absolute worst things about this disease, something I've had to deal with for my whole life, something that can lead to death or brain damage, and he's telling me to avoid it. When I left his office, I declined to book a follow up appointment because I never wanted to go back. He was pleasant enough, overall... no bad intentions. He seemed competent but hardly on the cutting edge of diabetes care. However, that's not the end of it. If it were, I wouldn't have even bothered to write this review. I was traveling the day after the appointment, and lost the little sheet of paper with my Rx. My fault, but not a big deal, right? When I called up and asked if they could provide me a copy, or fax one to the pharmacy, they said that I had to come into their office. I became annoyed and asked why. They wouldn't provide a logical reason. They just repeated that it was their policy, and that it was my fault for losing the prescription. Ok, but he already wrote it, so why can't you just fax it over? I don't mind paying for my mistake, but there's no reason for me to take a half day off of work to come in for a prescription that was given just weeks ago. What's particularly strange is that Dr. Hsu uses this great little online medical records tool. When I logged on to see if I could somehow maybe possibly get my Rx through that, there was NOTHING recorded in the "medications" section. The next day, still unresolved, I explained that I couldn't take a day off of work, and that I needed my insulin. I wasn't asking for a refill, just the original prescription that he made for me but was never filled. They changed their tune for the worse. They said that not only would I have to come in, but I would have to get blood work done. My cholesterol, level of protein in my urine, A1C... whatever they could possibly test for, would have ZERO impact on my prescription. Which, of course, he already given me. I called up my sister, who is a nurse, and explained the situation just to see if maybe I was missing something. Nope. She was incredulous, and pointed out that in 2014 the doctors just use a tool to send the Rx directly to the pharmacy. I called them back, and we repeated the same stupid conversation. Finally they told me to call up my pharmacy and tell them to send them a request for what I wanted. I didn't do that. I called up my pharmacy and told them to request a refill from my old doctor, even though it had been much longer since I had seen him. My previous doctor, who is not even a specialist, gave no hassle. No demand for me to come in to their office or provide blood work. Maybe Dr. Hsu isn't confident in his original prescription? Maybe he doesn't have it on file? Maybe he wants more money? I can only guess... all I know is that I've never dealt with more infuriating medical procedures. The staff can't even back it up. "It's his policy" is not an answer to anyone who is an adult who can think for themselves. read more

If you are referred to this office make sure NOT to come here. Make other arrangements as they will not call you back to follow up on even scheduling an appointment. Let alone a serious medical one. Not the compassionate office that you are looking for, and clearly the other reviews have also expressed the same. read more

He has the worst personal interaction style I can remember with an MD. On paper, he seems to have good qualifications; he shows affiliation with the Sutter group, where I've had good doctors otherwise, so this is unusual. I told him that his personal interaction style was a problem, and instead of showing any interest in correction or hearing any more about the concern, he just said not everyone likes how everyone else acts, and had no interest in improving the situation at all. It was quite a negative experience, leaving me feeling he had little interest in providing care, but that he might have 'good book skills'. It was even something of feeling of hostility from him, and I decided I do not want to see him again after two visits. He'd seem abrupt, curt, not explain many things, impatient, not looking for solutions to medical issues much. read more

Let's start off with this: I never even managed to get an appointment. This was the closest endocrinologist to my home and so I had my doctor give me a referral; even though with my HMO I can refer myself with just an extra $5 tacked onto my copay, they wouldn't accept me without authorization from my GP. When I originally called the office I managed to get ahold of someone in live time, who told me it was really simple: get a referral, because Dr. Hsu likes to have that and all his lab work ahead of time, and then schedule an appointment. Well, they didn't seem to get my referral from my GP after a week, which was funny because I had a copy of it, sent on the same day they sent it to his office. After another couple days, I left another message asking to schedule an appointment and that I was concerned I had not heard back from anyone. That evening, after 6pm so I couldn't even call back, there was a voicemail left on my phone telling me to call back during open office hours, that their office was severely short staffed and they couldn't get to all calls. That's a problem. I work in the medical field, you never tell clients you're short staffed and you don't leave your office phone on roll over to voicemail when you're open. Those are bad business practices. Now it's been probably three weeks, I still can't get ahold of them to schedule an appointment, and at this rate, I don't think it's worth it. From the reviews here and elsewhere the guy seems like a tyrannical doctor who is over-controlling and has way too many patients on his plate. Those things don't make for good doctors or medical facilities. If you have to continually leave messages, what happens when it's an emergency? or when you're completely out of medication, like insulin (because maybe you lost a bottle on a trip) and they haven't returned messages about refills? what happens then? read more

David S yes I am talking about the same Frank Hsu MD I have only been to him a second time and it was so bad he had everyone in the wait room for hours and five patients including myself in the exam room he was very rude about my condition, doesn't listen to my concerns and was running from one room to another and never came back to me to discuss my results. I got my paper work and left and will never go back I and others deserve better bedside manners that he can give. I know there are just as good specialist out there. read more