1. John C Chiu, MD

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    Newbury Park, CA

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    John C Chiu, MD

    3.1 (17 reviews)

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    Ask the Community - John C Chiu, MD

    Review Highlights - John C Chiu, MD

    “Chiu is also just a great person to have on your side in these desperate situations some of us are going through.”

    Mentioned in 11 reviews

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    Steven Tenenbaum, MD

    Steven Tenenbaum, MD

    4.0(43 reviews)
    0.1 mi

    Dr Tenenbaum is incredibly caring, compassionate, thoughtful, brilliant, comprehensive, committed,…read moreaccessible, kind-hearted, thorough, diligent, detailed, with an excellent bedside manner and dedicated physician! It's always a pleasure to interact with his efficient, friendly and caring secretary/office manager, Michelle! Dr Ammie Kahl is an equally FANTASTIC addition to the Practice! She always goes the extra mile for every patient, every time! She is meticulous, dependable and very kind-hearted, as well! A SPECTACULAR Medical Practice in every manner!! OBVIOUSLY, 5 STARS ALL THE WAY!! J. DENDER, MD, PsyD

    This review is for the medical practice rather than Dr. Tenenbaum himself…read more I've been a patient of Dr. Tenenbaum (technically one of his physician's assistants...you know the deal) for about 3 years. My medical history is pretty normal, so there isn't much to cover here: go in, get blood work done, get reminded that I have such-and-such value that is slightly above the norm for the population. Rinse, repeat. What drove me away from this practice (other than the 2020 pandemic...) is that Dr. Tenenbaum transitioned his practice to...concierge medicine. This artificially reduces the number of available physicians in the area, ultimately driving up medical costs for patients who do not necessarily need 24/7 support. I cannot ethically support this business practice, despite having the privilege of being able to pay an extra $200/mo for a service that I will likely not benefit significantly from...at least in the short term. I request that physicians reconsider going 100% concierge and consider a hybrid practice model. Allow those who cannot afford concierge medicine the ability to unlock a variety of physicians in the area. Healthcare is challenging enough as it is in this country...please don't add to the problem.

    Conejo Valley Family Medical Group

    Conejo Valley Family Medical Group

    2.4(113 reviews)
    1.4 mi

    My mother was a patient of Dr. Ted Darden, and after her death, I feel it is important to share our…read morefamily's experience. My mother's prescription records show that she was prescribed (among various other monthly meds) 180 Percocet tablets as a 30-day supply, with each tablet containing 325 mg of acetaminophen (Tylenol). Her death certificate ultimately listed acetaminophen/Tylenol overdose as her cause of death. I also personally had serious concerns about the way her medications were managed. Her appointments with Dr. Darden were often conducted over Zoom and, in my experience, very little time was spent with her before refills and/or new prescriptions were issued. After her death and reviewing her medications more closely, I was deeply disturbed by what I learned and have serious questions about the prescribing and monitoring of her medications. I am not claiming to make a medical or legal determination about who was responsible for her death. I am sharing the documented facts surrounding my mother's prescriptions, what I personally observed regarding her appointments, and the concerns our family has as a result. I strongly encourage patients and their families to be proactive: understand every medication being prescribed, know what ingredients are in them, ask about interactions and cumulative dosages, and seek a second opinion if something does not feel right. I wish more than anything that I had known then what I know now.

    Depends on who you have for a doctor I will give Mary Ragsdale a thumbs up for her.She did a great…read morejob.I've been coming here for 12 years.She actually is the only doctor that actually did anything she has a wait time BUT her work is good i wish I saw her a month ago.I would have maybe made it to my granddaughter's graduation Instead of being pushed around and around and around

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    Rosaasen Family Medicine - California Rose  Photography by jeff

    Rosaasen Family Medicine

    3.5(41 reviews)
    1.8 mi

    The Rosaasens are an amazing team and some of the kindest people I have met. I previously worked…read morewith Dr. Rosaasen, and during that time, he took great care of our family. At the time, he ventured on a new path to manage his workload, which was a very smart move. (insurance coverage issues). That brings me to why I am writing this today. I returned to this group two years ago and was assigned to a Physician Assistant I didn't know, Taelor Young. I truly STRUCK GOLD! Taelor is an incredible professional who genuinely cares about her patients. She has the perfect ability to be kind and suggestive while, at times, revealing her inter "Biggest Loser Coach" side, which I needed to keep me motivated and accountable. I started my health journey at 525 pounds. When Taelor began working with me, I was at approximately 410 pounds. Today, I can share that I have broken into the 200s. I did the work with her expert guidance, and I cannot thank her enough! This entire group and all staff are amazing. To the Rosaasens: thank you for finding such a gem. These people truly care, and I highly recommend them to anyone seeking guidance for their health care and weight loss. Tom

    The doctor really did not want to do anything to try and diagnose my condition. He did not…read morecontribute any ideas on what to do about it. I finally left after he lied about a prescription I was having refilled. I should have left much sooner. At best a lazy doctor.

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    Rosaasen Family Medicine is a Family Medicine serving Thousand Oaks, CA

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    John C Chiu, MD - physicians - Updated October 2026

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