1. Maria Siu, DO, FACOG

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    Maria Siu, DO, FACOG

    5.0 (4 reviews)
    Closed • 9:00 am - 12:00 pm

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    4 years ago

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    Ask the Community - Maria Siu, DO, FACOG

    Is Dr. Siu still practicing in the Pomona and Ontario locations? I called and they said she was no longer in practice. How can I being able to reach out to her?

    Wondering the same thing :(

    Which hospital do you deliver at?

    Pomona Valley Hospital

    The Yelp page says you're closed from yesterday and today and the number ending in 0030 is always with busy ring tone. Can you give an alternative number to reach? Thank you!

    9096225654

    Do you guys accept new patient at this moment?

    Yes. Please call to schedule an appointment.

    Hello, do you guys accept Medical?

    Yes, we do. Please call the office to confirm.

    View All 8 Questions

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    Summit Women’s & Wellness Medical Group - PREGGERS

    Summit Women’s & Wellness Medical Group

    3.9(52 reviews)
    11.0 km

    I cannot thank Dr Obey enough for all that she did for my wife and my new little girl! Dr. Obey by…read morefar is the best MD we've gone to. She's thorough, patient, kind, and just loves her patients so much. Some reviews say that she runs behind with her in the clinic appointments, but in my opinion, the reason she does is because she takes the time to really understand and educate all her patients. If you want someone who will take the time to listen, will advocate for you, and someone you can trust during the entire process, she is worth the wait. The biggest benefit and in my opinion the most important benefit is how Dr Obey was when it was actually time to deliver. She made sure the entire staff were doing things right and were on the same page. She was calm, encouraging, and we had her trust 10000% during the entire process. I can't thank her enough for what she has done for our family.

    My name is Edlyn Caro, and unlike what you've suggested in your response to my review, I was a new…read morepatient at your office. I had a scheduled appointment and personally experienced the issues I described. It's unfortunate that instead of acknowledging patient concerns and taking ownership, your response dismisses negative feedback as an attempt to harm your practice. My review was based solely on my experience--not on your medical knowledge or quality of care, because I never had the opportunity to receive it. At no point did I receive a phone call or apology from you or anyone in your office regarding what occurred. A simple acknowledgment and sincere apology could have gone a long way. Patients leave reviews to share their experiences and help practices improve. Dismissing legitimate concerns rather than addressing them only reinforces the issues that patients are reporting. I genuinely hope your office takes future patient feedback as an opportunity to improve communication and customer service.

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    Summit Women’s & Wellness Medical Group
    Summit Women’s & Wellness Medical Group
    Summit Women’s & Wellness Medical Group - Such a clean and beautiful office!

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    Such a clean and beautiful office!

    A&A Women’s Health - Dr Lamberty & baby

    A&A Women’s Health

    3.7(46 reviews)
    3.3 km

    Been trying to call for two weeks to make appt but no one picks up or reply back! Emailed but it's…read morea bad email, are you still operating?

    1 star for front office staff I truly believe Dr Norman…read morelamberty deserves all five stars which is the basis of the five star review but if it wasn't for him I would have been out of this place immediately. Being on medi-cal and finding functional medicine doctor has been life changing. Yes he takes other insurance. He gives me his time,knowledge and I have seen tremendous results seeing him. When I first found him after my first appointment the front office went a whole year without answering my phone calls or calling me back. Told it was a phone system issue. Now i finally got through this year and been back with him, the trouble still stands of reaching the office sometimes I have to call eight times a day before they finally answer or not; they never return a voicenail and my prescriptions are never filled when leaving my appointment. I've never had an issue calling my doctor to have my prescriptions refilled anywhere else and the front staff always blames the doctor, I'm not a complainer but they make me feel like I am a bother. This medication is important to my well-being. I feel like their front staff lacks compassion it's one thing that you're not greeted when you come in it's another to be put aside like it's not a priority when it comes to our health. They started doing blood draws and I told them I dont do well and they said I just need to not be anxious and when I started sweating and feeling dizzy they just sent me on my way I had to ask to sit in lobby which was so embarrassing for people to watch me while I try to pull myself together. I just go to quest where they lay me down and have ZERO issues with the blood draw. I have my next blood test in 2 weeks (3 months apart from previous) and have been without my prescriptions for a month. I am extremely grateful for dr lamberty but wish this cycle of having meds then being fully without them would cease and my care could run smoothly without worrying about trying to reach them. Last time I had to make another appt to see him just to get the refills this time I couldn't get an appointment before my follow up date appt already set. It is just irritating but worth it because the doctor is fantastic and the other doctors I have seen had very concerning treatment suggestions.

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    A&A Women’s Health - Dr. Norman Lamberty  Founder of A&A Womens Health

    Dr. Norman Lamberty Founder of A&A Womens Health

    A&A Women’s Health - Welcome to the world baby Ellie

    Welcome to the world baby Ellie

    A&A Women’s Health - We have years of experience with hormone replacement therapy her at A&A Women's Health! Call today to make your appointment!

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    We have years of experience with hormone replacement therapy her at A&A Women's Health! Call today to make your appointment!

    Lin Ota, MD - Riverside Medical Clinic

    Lin Ota, MD - Riverside Medical Clinic

    3.9(21 reviews)
    13.2 km

    I came here years ago and it still haunts me, and I still remember it clearly. The appointment…read moreseemed rushed, she seemed really annoyed at all my questions. Pretty much a quick exam and I got to ask like 2-3 questions as she was one foot out the door. At the end she sent an ADDITIONAL lab test in which I didn't fully understand was being done because everything was so rushed! ON TOP of that, it wasn't covered by my insurance! You would think they'd have a bit more consideration to say "hey, here's all the tests she's ordering, make sure the costs with your insurance" but NO I didn't even know it was getting done! I called the clinic who directed me to the doctor and she sounded extremely annoyed over the phone that I was questioning why she ordered an additional test without making it clear to me. After arguing with her, she forwarded me to to another woman, Sandra Alvarez, out of obvious frustration. After speaking with Sandra from "patient services", she gave me the complete goose chase for 2 months (obviously on purpose) until my bill was too overdue and at the end I had to pay the lab everything I owed, 150$ out of my pocket.

    I use to go to St. Jude for all my needs and recently changed insurances. When visiting my health…read moreinsurance app, Dr. Ota was rated one of the highest of OBGYNs on the list. After becoming pregnant I thought I'd give her a try and am soooo happy I did! She is not only the nicest doctor I've seen but takes her time with discussing any questions my husband and I have. She is always in a positive and upbeat mood and I have total trust in her. I feel reassured that she will help me make the right choices for me and my baby. The office staff is always courteous, I hardly wait more than 10 mins to see my dr. and the place is always clean and organized. I would very highly recommend Dr. Ota if you're pregnant and looking for someone knowledgeable in the field and reassuring. She's helped make my pregnancy journey and easy and enjoyable one!

    Maria Siu, DO, FACOG - obgyn - Updated October 2026

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