1. Greg Maddex, DO

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Diamond Bar, CA

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Greg Maddex, DO

3.9 (25 reviews)

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7 years ago

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7 years ago

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7 years ago

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6 years ago

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6 years ago

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7 years ago

I will miss Doctor Maddex. He was a great doctor. He finally got my blood pressure under control and he always had a joke for me.

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8 years ago

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14 years ago

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7 years ago

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8 years ago

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7 years ago

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6 years ago

Now that Dr. Maddex's office is closed, does anyone know where we can get our medical records?

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9 years ago

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7 years ago

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7 years ago

Best Doctor that cares about his patients. The front desk staff is professional. I recommend this doctor.

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7 years ago

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8 years ago

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9 years ago

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12 years ago

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Review Highlights - Greg Maddex, DO

“Dr Maddex has been my doctor for over a year now, prior to being my doctor he was my husband's doctor for many years.”

Mentioned in 14 reviews

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St Jude Heritage Medical Group - Waiting...

St Jude Heritage Medical Group

2.6(95 reviews)
1.3 mi

Pediatrics - I started going to St. Jude when we went to Dr. Mathur for our first born a few years…read moreago as she had great reviews online. We have no complaints with her other than she does get busy and the schedule fills up quickly. There were times we had to see the other pediatrician, Dr. Alejo, instead due to scheduling. We found Dr. Alejo to be soooo personable and always went out of his way to ensure we were informed and cared for. Because of this, we switched over to Dr. Alejo as the PCP and are so happy with the service he provides. OBGYN - Dr. Du and Verina (NP) were the two I most often saw during my pregnancy. Both extremely friendly, personable and will take the time to answers questions, otherwise, office visits are standard and quick. Great experiences overall with both! Office has gone through extensive renovations and is very modern, clean and spacious. There is even a little seating area for the kids with a tv to keep them occupied / entertained while waiting. Located in the same plaza as The Habit / Sprouts / Ross. Shared parking lot with ample amount of spaces, never an issue.

Excellent all around doctors and staff. Yelp says... review…read moreneeds at least 85 characters. So im adding... Excellent parking, magazines, restrooms, location. Near good burger shop, freeway exit. And ignore negatives. Great clinic.!

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St Jude Heritage Medical Group - Lobby

Lobby

St Jude Heritage Medical Group - Lobby of Providence new location. Located next to Sprout on Diamond Bar Blvd.

Lobby of Providence new location. Located next to Sprout on Diamond Bar Blvd.

St Jude Heritage Medical Group - New front desk at new location. Next to Sprout.

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New front desk at new location. Next to Sprout.

Kaiser Permanente Diamond Bar Medical Offices

Kaiser Permanente Diamond Bar Medical Offices

3.3(129 reviews)
1.3 mi

Outstanding Care from LVN Desiree B.!…read more I wanted to take a moment to recognize Desiree B., LVN, for being absolutely amazing during my 5-year-old daughter pediatric checkup. Desiree is the kind of healthcare professional who reminds you that compassion and the little extra touches really matter. She clearly has a gift for working with children and making families feel comfortable. What stood out most was the thoughtful personal touch she added to the visit. She used my daughter's name and wrote a welcoming message on the disposable paper covering the exam bed, then decorated it with colorful markers. It was such a simple gesture, but it showed that she took an extra moment to make my daughter feel special rather than simply going through the routine of a pediatric visit. My daughter noticed it, and so did I. It made the whole experience feel more personal, fun, and welcoming. I sincerely hope her leadership recognizes her for the wonderful care and kindness she gives to her patients. Desiree deserves to be recognized, appreciated, and rewarded for going above and beyond. Employees like her make a real difference in a family's experience with Kaiser.

This is a relatively small Kaiser Permanent medical office. It was my first time here and the…read moreexperiences were great! Facility is very clean with barely any patients in most areas. Usually the pharmacy is so packed at Kaiser Baldwin park but not here. I needed to visit the lab and radiology departments that day. The staffs were very friendly and accommodating. In fact they provide good services at any Kaiser locations in general. But I feel this one is warmer and more welcoming. Most likely I will make my half yearly checkup at this location in the future! It's much closer to home too!

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Kaiser Permanente Diamond Bar Medical Offices
Kaiser Permanente Diamond Bar Medical Offices
Kaiser Permanente Diamond Bar Medical Offices

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Star Health Medical

Star Health Medical

4.4(190 reviews)
4.2 mi

A few weeks ago, I started having some health concerns and was worried about how long it would take…read moreto get everything sorted out. A friend recommended this clinic, and I'm glad I listened. From check-in to checkout, the entire process was smooth. The staff were kind, attentive, and made me feel comfortable right away. I expected the referral process to take days, but they handled it quickly and kept me updated. When I needed medication, the prescription was sent out without delay. It's rare to find a clinic where everyone genuinely seems to care about helping patients. Their efficiency, professionalism, and friendly attitude turned what could have been a stressful situation into a very positive experience. I would definitely return and recommend them to family and friends.

Oh, please. If there's a zero star, the NP deserve a zero star. I was calling them today like 3…read moretimes regarding my mom's lab results. They keep saying: "oh, we're busy right now, we'll calling u back." It never happens. All lies. Zero calls back. Worst one, the NP was yelled and didn't even want to listen to the complain, and hung up. Waow! What a service! Super epic. They called, inform about "something" that wasn't a clear instruction, and wanted us to check with a neuro specialist. How to communicate with the next doctor, if the instruction I received wasn't clear? If u inform something to someone, and someone communicate it to someone else, and it became unclear what do you want, cannot give response back, get the hell out pls. Do it yourself. Don't care what u want anymore. When I asked, "nicely"... their response was: oh, we're VERY busy right now, we WILL call you back. PRETT!! "Liar!" And the NP was saying: "don't u understand that we're VERY BUSY!!" "You need to listen to me!" (When she's the one NOT listening!) (After I called 3x and waited for them to call back like almost 8 hours???) Don't u think I AM NOT BUSY MA'AM? I was "too busy" waiting for your response, just to ask, what do u want from the neuro? From the kidney doctor? What the hell u want? Explain it nicely, not so complicated ma'am "busy-in-the-world." I'm sure the doctor is a nice person, but NOT the ma'am NP! She's a fucking bullshit!!! Not a profesional at all. They tend to hanging up their phone OR just blocked u into a busy line, so when u called them, NOONE (like literally noone) will pickup the phone OR listen to your voicemails. Their phone is broken, just like their heart is broken. Probably, just come to their busy office, and see how "busy" they are blocking people's phones call to make a very QUIET room. Wow!! Applause to their profesionalism. That's how they got their profesional degree. Just blocking people's phone, and do prescription till their patient's kidney is broken.

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Star Health Medical
Star Health Medical
Star Health Medical

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PVHC

PVHC

3.3(41 reviews)
3.1 mi

5 stars for my doctor, the staff and receptionists, and the facility/logistics itself. It is truly…read morerare that a doctor's office (including staff) are all sublime and provide such a great experience! Let me go through each of the following: +Dr. Shah: Dr. Shah is really cool; he introduced himself to me as Dr. Jay, and we are from the same home town, age, and have a similar life background in terms of moving around from the Bay to LA! It was great having that rapport since it was my first time meeting him. But most of all, the best thing was that he ordered multiple tests to help me get to the bottom of my abdominal issues that I have been struggling with for more than half my life! After going to the ER a few times and finding nothing major in my CT scan, I was worried he would dismiss my stomach issues, BUT he did the opposite thing and helped me with diagnosing multiple potential problems. I REALLY APPRECIATE IT!! I feel like I can breathe a sigh of relief and finally get to the root cause of all my abdominal issues! This has not been the case with previous providers...(hence why I switched). THANKS, DR. SHAH! Oh also, Dr. Shah is funny; he made a funny joke on his business card lol. He also was able to take a look at my ankle as I know his expertise is also in sports medicine! He gave me detailed information on stretches to do for my ankle and also some resistance bands. WOW! THANK YOU! Going above and beyond - totally didn't expect that! He also did not rush me and answered all my questions. +Staff/Receptionists: I truly believe it is rare that if you leave a voicemail/message for the receptionists at a doctor's office, that you would receive a call back. Not only do I receive a call back each time, IT IS WITHIN THE SAME DAY! That is WONDERFUL! Keep up the amazing job!! It means so much to be called back; I almost couldn't believe it when I picked up the phone. The young lady who met with me before Dr. Shah was also very friendly and made small talk with me. +Facility & Appointment Logistics: The facility is nice; I think it's probably just a few years old. I experienced no wait (I was even seen EARLY). WOW. Everything was prompt, efficient, and thoroughly explained! I also appreciated how I received discharge papers with such details documented and on my labwork, there were even specific instructions on what I should avoid taking before the bloodwork. I was also told in detail about fasting. My previous provider did not do that! Overall, it has been a wonderful experience so far with this provider and clinic! I am so happy because it is very close to where I live too. Feels like a dream come true to finally have a great doctor and experience with a physician's office! I highly recommend this clinic and doctor. The location is nice also (it's diagonal from a yummy Thai place - see my other Yelp review if you're curious!)

I'm only giving the 3 stars due to the front staff personnel. I've been in healthcare for years and…read morewhen the attitude is given by the front desk, it just ruins the vibe for the whole visit. It's my first time here, I try to get to the location and due to some insurance mishaps my appt location and time had been changed a few times. I arrived to the Crossroads location and quickly found out I arrived to the wrong one. Rushed over and even CALLED the front desk to let them know I was arriving late as a courtesy. As I walk in the front girl screening the appt just started repeating over and over how I was late and the tone was just annoyed right off the bat. Even another lady trying to come in was given attitude so quick too, but watched her as she picked and chose who to be nice to when walking in and out. ON TOP OF HAVING A WHOLE CONVERSATION ON HER CELLPHONE IN THE LOBBY out loud in front of us. Luckily they took me. Accepted my insurance and payment, the girls behind the window were a little nicer at least. The back office staff , especially the girl that took me back was much more pleasant. The conversation was there and the overall vibe was better from her. Finally seen Dr Baez. Super pleasant. Still took me in for my rather short 5 min visit and I was very satisfied. Point being, you can tell when you enjoy your job and when you don't. People can too.

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PVHC
PVHC
PVHC

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La Vista Medical Center

La Vista Medical Center

3.8(14 reviews)
0.0 mi

I recently established care with Dr. Hajal and had a great experience. Finding a PCP who truly…read morelistens can be difficult, but Dr. Hajal took the time to address all of my concerns and thoroughly explain my lab results and treatment plan in a way that was easy to understand. The office is clean, organized, and the staff are friendly and easy to communicate with. Scheduling and follow-up have been smooth, and I never felt rushed during my visit. I'm very happy I chose Dr. Hajal as my primary care physician and would highly recommend him to anyone looking for a knowledgeable, caring, and thorough PCP.

About a month ago I received an email from this office saying I needed to get a new medical card…read moreshowing Doctor Hajal needed to be listed as my primary doctor on my medical card. First of all, I never saw Dr Hajal. I saw Dr Khaleel and was very happy with my visit to her last year. I call the office and the one time I got someone on the line who said yes, our office needs to be listed on your card for you to continue to come here. I call anthem and they dispute that saying I can go to any providers and there's no reason to issue me a new medical card. Since then I have called La Vista multiple times and received no answer. I have left two messages, and gotten no call back. I emailed on the app, No response so I booked an appointment on the app only for it to be canceled today without a reason why. Maybe if someone from their office staff answered the phone, I'd have an answer. Fuck this place and thank you for making me go through the whole process of looking for a doctor again.

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La Vista Medical Center
La Vista Medical Center
La Vista Medical Center - Decorations always on point!

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Decorations always on point!

Pomona Valley Hospital - More mold from the other side of the room

Pomona Valley Hospital

2.5(664 reviews)
6.4 mi

I was very surprised how well they run this place. I been to other hospital and would avoid this…read moreone only because of its location. My overall experience was great. I hope I never have to come back. But if I ever did this would be the place.

I came to the emergency room in a full pheochromocytoma attack. This is the kind of medical…read morefacility that will tell you, you're having anxiety and its something serious and loved ones end up passing due to this type of dereliction. I'm a 36 yo adult. I am fully aware of anxiety/ panic attacks and this wasn't it. I had severe chest pains, high blood pressure, severe headache, sweating and started vomiting so finally decided it was time to go once I started vomiting. Mind you I was about 6-7 weeks post op a total hysterectomy. I went with no bra because the chest pain was so intense and my abdomen was still so sore from surgery. The man who did my ekg asked if I'm comfortable just walking around with no bra ... I was pretty shocked it being the ER but told him yes I can care less because my situation. I barley could walk due to the dizziness and vision problems I was having aside from everything else. But no biggie I brushed it off. Then the man who did my IV tells me, can you walk?! As I was in a wheelchair. I was like no dude I'm so dizzy and sore from my surgery. Made me feel like such an inconvenience and very embarrassed. Long story short they chummed it up to be chest pain and anxiety. I never even mentioned it had anxiety so that was weird. I expressed how bad my heart and chest was feeling and the ER doctor basically said I needed to follow up with an endocrinologist and there was nothing they could do aside from the meds they gave me. I was in complete disbelief. Went home feeling horrible but followed up with my primary and now I am seeing an endocrinologist who is sending me to Loma Linda hospital. You really have to advocate for yourself. It's so sad how they make you feel and brush off your symptoms. Especially when you're at your absolute worst. Even on my forms you can tell they tread lightly labeling it chest pain but still slightly mentioned my pheochromocytoma. Also, would have been nice for them to mention I had kidney stones but the emergency room doesn't feel that is a serious issue so I am aware they wont mention the findings, but its listed as some of the most painful heath issues. The wait was fine. Expected from an ER. If I end up here again I truly pray they do better and hope people get the care and compassion they need. I left two stars because my visit was in March. Today I visited the main hospital to retrieve my scans on a disk to give to the endocrinologist for the tumor and the gentleman who was volunteering in a wheelchair was amazing helping me navigate the hospital. The woman in medical records was also so very sweet and kind.

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Pomona Valley Hospital - Flash photo looking down inside the air conditioner vent notice all the dirt and mold.

Flash photo looking down inside the air conditioner vent notice all the dirt and mold.

Pomona Valley Hospital - Hospital room

Hospital room

Pomona Valley Hospital - My dad's hospital room vents on 4th floor

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My dad's hospital room vents on 4th floor

Urgent Care Medical Center

Urgent Care Medical Center

2.8(48 reviews)
5.3 mi

Just finished my visit with dr. Liu. I was skeptical of going to urgent care because I really…read morewanted to see my primary care physician but the appts were 3 months out. Anyway, my visit was quick and thorough. The doctor had the perfect balance between being professional and being personable. The nurse (nurse Wang) spent time building rapport and creating a comfortable environment for me as they drew blood. After all was said and done I was only charged $200 for the blood/urine tests they sent out to do. I know people on Yelp think they are getting "ripped off", but $200 is not a lot for blood work. My husband had his done at a different clinic and it ended up being $1100 for the same tests. I would recommend going here if you want to work with professional and precise individuals. I would also mention that both doctors are board certified so they know what they're doing.

my fiance had pretty horrible experience…read more he was "forced" my insurance company to go in for annual check-up he went in and saw the doctor on the 17th and they took multiple viles of blood and first time it went okay he got a call couple days later and was told he need to come back to check his potassium level again and it was high from last time he went back on the 24th of May and they took one more vile of blood and this is a result after his visit not to even mention.. i thought insurance covers once a year check up which includes blood work? he was charged for his initial visit with doctor along with blood work and second time visit fee along with second blood work after $210 spent to be told you are fine and left with punctured veins or possibly arteries? he couldn't move his arm for couple days and now theres pretty nasty looking bruise on his arm he said it was the same person who took his blood both times

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Urgent Care Medical Center - Small room for consultation.

Small room for consultation.

Urgent Care Medical Center
Urgent Care Medical Center - Posting for my fiance.. He went back for more blood work to get his potassium checked and this is what happened.. think they punctured vein

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Posting for my fiance.. He went back for more blood work to get his potassium checked and this is what happened.. think they punctured vein

Greg Maddex, DO - medcenters - Updated October 2026

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