1. Koperek Brian M, MD

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Laguna Hills, CA

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Koperek Brian M, MD

4.1 (29 reviews)
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4 months ago

He was patient and very efficient. He knew exactly what lab to order and I was out of the clinic in 30 minutes.

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4 months ago

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3 years ago

#1 OBG in my opinion. Takes the time and goes the extra mile for excellent patient care.

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2 years ago

Dr Koperek is a caring physician helped me with his superior experience. I had a bacterial infection.

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3 years ago

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Review Highlights - Koperek Brian M, MD

“Throughout the journey his laid back manner made me feel at ease and I love his sense of humor.”

Mentioned in 6 reviews

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Vaya W Tanamai, MD

Vaya W Tanamai, MD

3.9(20 reviews)
0.1 mi

I had the pleasure of being under the care of Dr Tanamai during my pregnancy. Before establishing…read morecare, I did my homework & searched high & low on doctors in the area. I was very picky & what really made me choose Dr. Tanamai was how she mentioned in her memorialcare video how child birth is a natural process & she doesn't do anything magical on her end, & acts more like a coach on the sidelines. I liked how she humble she comes across on her video. I do not like doctors usually, but during my 9 month span & all the appointments, I can say she really listened to my needs. I can be a bit of a diva but she never made me feel unheard or weird for my preferences. She also never pressured me into anything, because I stood my ground on certain practices & I ended up getting my way which I appreciated - & I didn't have to fight for it either. I was very disappointed in the fact she couldn't deliver my baby - since he came after her working hours Friday (after midnight). My only complaint & maybe if she reads this review, is the next baby I would like to put a special request to deliver baby #2 whenever that may happen. I will never forget one appointment where she was more chatty than usual & I really liked that - it felt like I was talking to an old friend. We were talking non medical & it was very refreshing. I wish every appointment could of been like that but I understand the l&d field is very chaotic. I would recommend Dr. Tanamai to anyone looking to establish care for pregnancy or for an obgyn.

I did not return for my woman annual exam this year with Dr. Tanamai. She was pleasant and…read moreinformative during my initial visit with her BUT...yes, here's the butt part: when I requested her to check a particular vitamin level for lab tests, she was rather cold, rude and dismissive about it. She ordered it at my request but unobligingly cold in messaging portal. What's the point of having a wellness exam if you are not going to be thorough and complete?

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Vaya W Tanamai, MD
Vaya W Tanamai, MD

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MemorialCare Medical Group - Women’s Health Pavilion - Get rid of unwanted fat in 25 minutes now with Sculpsure at Saddleback Womens Med Group

MemorialCare Medical Group - Women’s Health Pavilion

3.6(94 reviews)
0.2 mi

To Dr. Adriana Sherman in Memorial Woman's Healthcare. She went above and beyond;) she provided…read moreexcellent patient support care to my mom;) I was with my mom this morning;) the healthcare team the nurses are very helpful very friendly and the facility is very clean;)

This is our first pregnancy and the practitioners here are terrible. On our first appointment with…read moreDr. Rachel Lopez, we were told it was impossible for my wife to be pregnant. We, of course, knew otherwise because of her symptoms. We had to beg to get bloodwork so we could be sure and my wife left the appointment in tears after being dismissed and shot down by the doctor. On our second appointment with a midwife who said she was a doctor of nursing, Dr. Denise Castellanos, we had many questions since it is our first pregnancy. Instead of answering them, approximately 90% of the questions were directed to a QR code. This was especially bizarre given the fact that we paid to see her and not a QR code. The "doctor" spent the entire time trying to convince us that she respected our choices and decisions without actually giving us any information whatsoever or showing us any genuine respect. It was all an act. What is the purpose of making and paying for an appointment with a doctor if they are just directing the majority of questions to a QR code or telling you to wait until we are in the right trimester for the question to get answers? We learned more from Chat GPT in 10 minutes than we did from these people in two appointments, totaling approximately 60-80 minutes. Chat GPT also wasn't dismissive and condescending. Even worse, it took them multiple days to get us test results that are critical in maintaining our pregnancy, putting our baby's life at risk. We only found out about the results because the pharmacy called and said we had a prescription. There was a complete lack of communication from Memorial Care staff prior to the call from the pharmacy. When they did finally call, it wasn't even a doctor. It was just some office person from a call center. We tried to make a complaint and they rejected us saying "take it up with the insurance". Apparently they are more concerned with billing than they are with human life. DO NOT trust this place with your pregnancy. DO NOT GO TO MEMORIAL CARE! Go to anywhere other than Memorial Care!

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MemorialCare Medical Group - Women’s Health Pavilion - Dr. Sternfeld performing three dimensional ultrasound

Dr. Sternfeld performing three dimensional ultrasound

MemorialCare Medical Group - Women’s Health Pavilion
MemorialCare Medical Group - Women’s Health Pavilion

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Orange Coast Women's Group - Laguna Hills

Orange Coast Women's Group - Laguna Hills

3.3(327 reviews)
0.1 mi

I'm updating my review and I can't believe it took me so long! This is an excellent ob/gyn group. I…read morehad some medical issues during my pregnancy and Dr. Kong got me tested immediately. She pretty much saved my baby from being stillborn! I also had to come in multiple times and saw a few different Drs because of my medical issues. Each one was great. I've been seeing Dr. Kong for about 6 years now and she's amazing. I am always able to get an appointment and I have never seen an NP there. The offices aren't overcrowded either which is nice. Dr Kong also delivered my baby. She made it a point to be there for the birth because I had some infertility issues as well so this was (in her words) "a very special baby." I'm so thankful to her!

I am extremely disappointed with the care coordination I received from Orange Coast Women's Medical…read moreGroup. After my first ultrasound, I was instructed to wait nearly three weeks for a follow-up appointment because there were no earlier openings. During that time, I experienced a miscarriage. After being treated in the Emergency Room for severe bleeding and requiring a blood transfusion, I was specifically instructed to follow up with my OB-GYN in one week. However, when I contacted the office, I was told that my doctor believes four weeks is sufficient, despite the ER recommendation. I understand that not every pregnancy loss can be prevented, but patients deserve timely follow-up care, especially after such a traumatic medical emergency. I no longer feel confident in my current provider or in the way my care has been managed. I hope the practice reviews its scheduling process and communication so that other patients experiencing pregnancy loss receive timely and compassionate care.

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Orange Coast Women's Group - Laguna Hills - The lobby in Irvine office .

The lobby in Irvine office .

Orange Coast Women's Group - Laguna Hills
Orange Coast Women's Group - Laguna Hills

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Rachael L Lopez, MD

Rachael L Lopez, MD

2.9(14 reviews)
0.0 mi

I am really grateful that I found Dr Lopez…read more I have been dealing with horrific abdominal pain on and off since I was a teenager. I have had countless ultrasounds with them concluding nothing is wrong with me. It's been crazy. For the last 30 plus years I've been trying to figure out what the cause is and going to doctor after doctor after doctor begging someone to please just do something different to figure it out. I have also dealt with major issues related to my "monthly bill" us females are blessed with. Dr Lopez is the first doctor to actually do something different. She did a cath/inject hysterosalpingogram. Guessing that's the technical term as that's what's in my chart for what I had. It was very painful for me from the start and she was very nice and patient with me and talked me through everything. She showed me what she found on the screen and was patient while I was able to calm down, breathe through the pain, and look at the screen. I cried. I yelled. I cussed. She was very understanding and when I asked if I was the worst patient she's ever had for that procedure she was very nice and said everyone handles everything in their own way and that's all that matters. She made me feel better. I don't know what it is but the older I get the less pain I can tolerate. It's frustrating. Anyway, she let me know I'll need surgery and we discussed other options during that surgery as well for another procedure I've been asking about so both can be done at once. She let me know I'll get more details in a few weeks at my pre-op appointment. I have seen Dr Lopez three or four times this year and every visit she is very thorough with me, listens to me, answers all my questions and never rushes me. I have been through so many obGyn doctors and I am finally happy to say I found a great one who listens. I'm very grateful.

I am "post menopausal" and just met with Dr. Lopez for the first time. I had a wonderful…read moreexperience with her. She really listened to me and is helping determine which hormone treatment is best for me. She is very responsive to messaging through the patient portal, and that is so important when you have concerns or follow up questions. I'm really glad I found her - it's so hard to find doctors you can trust, especially when you have an HMO and your choices can be limited!

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Rachael L Lopez, MD

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Daniel Sternfeld, MD

Daniel Sternfeld, MD

4.2(20 reviews)
0.5 mi

Dr. Daniel Sternfeld is an exceptional OB/GYN and surgeon, and I truly can't recommend him enough…read more I had been struggling with severe menorrhagia for years, which led to iron-deficiency anemia so severe that I needed iron infusions every few months just to function. After discovering a large fibroid that had enlarged my uterus to five times its normal size, Dr. Sternfeld and I decided that a robotic laparoscopic hysterectomy with bilateral salpingectomy was the best course of action. I was reassured to learn that he was actually the first physician to perform robotic surgery at Saddleback Medical Center in Laguna Hills--his expertise really shows. From the very beginning, Dr. Sternfeld took the time to explain everything in detail and made sure all of my questions were answered. Even when I messaged after hours through the patient portal, he and his office responded quickly and kindly. That level of care and attentiveness helped ease any anxiety I had throughout the process. Now, four weeks post-op, I feel fantastic. I'm healing beautifully and already back to enjoying walks and light activity. This surgery has been life-changing--and I have Dr. Sternfeld and his amazing team to thank for that. If you're looking for a knowledgeable, compassionate OB/GYN who truly listens and delivers excellent care, I highly recommend Dr. Sternfeld.

Dr. Sternfeld was a knowledgeable and experienced doctor who explained medical issues clearly. I'm…read moresorry that he has retired!

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Daniel Sternfeld, MD
Daniel Sternfeld, MD

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Koperek Brian M, MD - obgyn - Updated October 2026

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