Amazing results. Caring physician with great knowledge and kindness. Highly recommended for patients in need of comprehensive care.

This doctor is awful. Went to him for 2 years and I don't think he even knew my name.

Dr Kastoon is a great doc. His staff absolutely terrible!!!! Each of them have a terrible attitude. Everything seems like you're hassling them. Been waiting on a prior authorization now for 4 months. Good luck getting them to answer the phone and even more so when you leave a voicemail for a call back. I would in no way recommend this office for your care. read more

Because of Dr Saad I am alive today. I went to him because my neck was looking like I was growing an Adam's apple and I had had a thyroidectomy twelve years prior. He quickly did the scans and tests and quickly hooked me up with a surgeon. I had been growing an ectopic thyroid and between that, my parathyroid and a bunch of lymph nodes I was in trouble. Dr Saad has been active in getting me calcium treatment to support my levels because they have been critically low. YES I would recommend him. And his office staff are really wonderful as well. read more

The only reason I am not giving him 5 stars is his office staff. He is an amazing Dr. His staff..not so much.

I left this doctor. Yep! I'm talking about Dr. Bashar.. he treats his patients like cattle! The staff doesn't answer the phones. The doctor storms in your room. He's very brash and doesn't listen to you. He brings in a student doctor to come in the room and you are treated like a study guide specimen. That is something he should not have done! You should ask the patient first! After the visit he walks out of the room and talks really loud about your medication and medical requirements to the front desk and people in the waiting room can hear everything!! You walk out and the people in the waiting room will know it's you he's talking about. He startled me when he came in the room instead of knocking on the door before walking in. He made me lay down on my back to take my blood pressure. He said my pressure was high... well you go figure... you had me waiting a long time and just bust in the room! He increased my dosage and it made me lethargic.. the med was too strong. I now go to a female internal medicine doctor. I will never return to Dr. Bashar. He has no bed side manners, no patience to listen to his patients and he cuts you off! He certainly has no professionalism when guarding patients privacy. read more

Front office doesn't call patients back after leaving many voicemails and leaves you on hold having to call office back multiple times.

Clean office, excellent Dr. He cares he is through, friendly and professional. Takes his time and answers all my questions. Highly recommend him. read more

Horrible experience! I had problems with my thyroid and when I tried to reach reception or try to reach them for an appointment they never answer. And they still billed me for an appointment I tried to cancel various times. Save your money and go to a Dr office that would actually take care of you and value your time and money. read more

Great Doctor and awesomely staff. Jessica NP thoroughly went over my medical issues and gave me great medical advice before I saw Dr Saad, enjoyed Upland office opposed to San Bernardino office. Upland staff more attentive, helpful and knowledgeable. read more

Dr Saad is an amazing doctor with great bed side manner and a wealth of knowledge and experience. However, his office staff receives a negative star if possible. I have been trying get me prescription refilled for over two weeks. My pharmacy and myself have left multiple messages asking to have the prescription refilled. No response or answer has been the norm. It is IMPOSSIBLE to get someone on the phone to talk with. It is very frustrating when the office staff receives such a negative review when the doctor is excellent. read more

Great Dr. Very competent,Understanding And Caring with his patients. Although hard to get a first time appointment waited 3 months.

I'm a patient of Dr. Kastoon. Dr. Kastoon is my endocrinologist and I've been a patient since 2 years ago. He is very caring and attentive with his patients. Always answers all my questions. He goes above and beyond to get the right tests and the right medication that I need. I would recommend him to anyone that needs an endocrinologist. Thank you Dr. Kastoon! read more

The only reason I'm giving this office 1 star is for the unprofessional staff Dr Saad has. They never answer the phone and if they do they put you on internal hold. They are not friendly at all. Dr Saad is an amazing doctor. He needs to clean house and hire all new professional staff. read more

The doctor is ok...he does like to help his patients even tho he is a little weird...but the staff omg...they think there the owners or doctor...i really hate how they treat ppl..there hispanic and hate how they treat there own race...they have the nopal in there forhead like we say. read more

Dr. Bashar Saad, MD is a very competent specialist, hard to find these days! He knows exactly what to do, great attention to details. I trust Dr. Saad to treat all my medical problems in his fields of specialties. On top of that he has a good sense of humor to ease his patients' anxieties on their conditions. read more

Dr. Saad is one of the nicest specialists I've seen. Very easy to talk to, knowledgeable, and clear with diagnosis. 30 years experience, he knows what he's doing. I feel lucky to have been referred to his office. I have complete trust in him to treat me. read more

The only reason I'm giving this business any starts is because Dr. Saad is an amazing dr. This clinic would be great if he hired a new front staff, because it is IMPOSSIBLE to get a hold of them. I've called numerous times in the past months. I've left voicemails in which nobody has returned. Now to the point where there voicemail is full and still no luck getting thru. I'm very disappointed because I do not want to switch doctors, however I'm left with no choice. It's very disheartening to know that someone who is supposed to care for your health doesn't even care to return a phone call. read more

I waited well over a month for an appointment to this office. Not only that, I had to call and schedule it myself even though they received a referral weeks before I called! I arrived on the date I was told and at the time I was scheduled (Friday @8:15am) and found a sign on the door stating on Fridays they're only open from 2-5PM. I called and the lady I spoke to was very nice, however she claimed at first that there was no referral for me, then that there was no patient record, and finally that I was scheduled earlier in the month and that I missed it. I know for a fact I was told the date I showed up because I threw the biggest fit about having my appointment out so far and repeatedly asked the woman who initially scheduled me if there wasn't anything sooner, that X date is way too far away and I needed to be seen ASAP to get things moving. I let that go and rescheduled to their earliest appointment the following week. I just got off the phone with someone there who informed me that the Dr won't be in tomorrow and that I need to reschedule again. Completely ridiculous!!! Unprofessional!!! I hope this office realizes that many many many!! of my needed procedures are pending on an appointment with an Endocrinologist! This is not a game! I called and asked for my insurance send me somewhere else. read more

Dr Saad and Dr. Dagher have treated my daughters for 13 years. They are not only knowledgable but personable as well. Their staff is very kind and helpful. I would not trust anyone else to provide care for my family. read more

Excellent Doctor, he determined my problem, ran tests, referenced me to an amazing surgeon and i am like new in less than 2 months. Thank you Dr. Saad. read more

Best Dr. Ever! Love Dr Saad. He really cares and my kids love him! Take great concern in my son's health.

Waited 3 months for my appintment. They scheduled me at a time when their office is closed. Even made sure I got off work to make it. Very unprofessional. I left a note for when the office does open. I'll change my review based on how they handle this. read more

Dr. Saad was very kind and comforting. He seemed to be very knowledgeable and educated and made me feel at ease. He is a wonderful doctor :)

Very nice and knowledgeable Dr. He seems to genuinely care about his patients.

A kind, intelligent physician who listens, and responds appropriately to your concerns. I am very happy with this MD. I am encouraged that I will recover faster due to his care. The staff are also very nice, it may be a bit of a wait, but some things in life are worth the wait, this MD is one of them. read more