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    Maria Siu, DO, FACOG

    5.0 (4 reviews)
    Closed Closed

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    3 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

    4.1(43 reviews)
    11.0 km

    Dr. Obey and her staff are amazing! I'm so glad I came…read morehere. There is a bit of a wait to be seen but in my opinion it is 1000% worth it. Dr. Is understanding, compassionate and answers ALL of my questions every single time. Girls in the front are also very supportive.

    I'm so grateful for Dr. Obey and team; I came in at high risk and requiring to be monitored…read moreclosely. I previously had a miscarriage so was worried in my early stages but Dr and staff helped make sure our baby and I had a healthy, safe, pregnancy and delivery. I was also happy to experience what they do to make sure Dr makes it to your delivery, they will re-arrange their appointments as needed because babies come, when they come. I'm sure you could appreciate it if it was for you. Dr made it to my delivery and I felt so comfortable and relieved to have her their considering how busy she is. Yes, her office gets busy but that is a compliment to the Dr and team because that is how valuable she is. So, if you would like an experienced, knowledgeable, caring Dr you truly build a relationship with they are for you! Some days it's busy and some people don't like to wait, but I would since I know I'm going to get the knowledge and care for baby and I. There is not anything I wouldn't do for my family. Thank YOU Dr and team for everything. I will come by for my gyno needs too.

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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

    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.

    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?

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    A&A Women’s Health
    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

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    Welcome to the world baby Ellie

    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 May 2026

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