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    Martin T Ahn, MD

    3.6 (12 reviews)
    Closed • 9:00 am - 5:00 pm

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    7 years ago

    The best doctor ever in Buena Park. He's so nice and patient and explains things through early

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    Terrisa S Ha, MD - Front desk

    Terrisa S Ha, MD

    4.0(73 reviews)
    2.8 mi

    When I moved to the area from Irvine, I needed to find a new doctor. I actually work at a pharmacy…read morenear her office so I was well aware of how much her patients loved her. As soon as my insurance told me she was an in-network doctor for me, I knew she was going to be my new PCP. I was seen right away. (maybe 15-20 min in the waiting room?) Thuy spent plenty of time with me, addressing all of my concerns and asked if I had any other questions. She also said if I ever needed anything, I could always just call. It made me feel like she really cares. Everyone at the office is extremely efficient; they always get back to me within 24 hours if I leave a message. FYI: they don't draw blood at the office for fasting labs so don't come in hangry for your annual check up. Ask them to send the lab order to your insurance's designated lab so you can schedule blood draw at your convenience. I highly recommend Dr. Ha to anyone looking for a caring PCP!!!!!

    I love Dr Ha and Dr Hanna. I've been coming here for at least 10 years. But her office manager is…read morean asshole. She is combative with me always over my bill. Which is always paid by anthem. She has done this more than once so I called anthem. The agent for anthem said well let's talk to the office manager the three of us so we can resolve this . So we called and talk to her. Well she didn't like this at all. She let us know that she would contact the billing agency and let them know and abruptly hung up on us. The agent was did she hang up on us. I said yes. The agent filed a complaint on her through anthem and unfortunately I haven't seen a doctor in two years . Anyway office employees know yr policies. I don't go to the doctor to argue with you. I go there to get help.

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    Terrisa S Ha, MD - Entrance

    Entrance

    Terrisa S Ha, MD - Lobby entrance

    Lobby entrance

    Terrisa S Ha, MD - Happy Holidays from Dr. Ha & Staff! Top row: Dina, NP Thuy, Dr. Ha, Jasmin Bottom row: Jiwon, Rachel

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    Happy Holidays from Dr. Ha & Staff! Top row: Dina, NP Thuy, Dr. Ha, Jasmin Bottom row: Jiwon, Rachel

    Upper Echelon Medical

    Upper Echelon Medical

    4.9(57 reviews)
    4.4 mi
    Established in 2021
    Locally owned & operated

    I had been in the market for medical insurance through Covered CA but the cheapest one I could…read morefind, that also allowed me to go to the doctors I had been going to for years, was a bit expensive. I decided to look into other options and did a search for places I could pay out of pocket. When I lived in Mexico, I had been using the services at a local hospital, paying a monthly membership fee for their services so imagine my surprise when I found out that the exact same system existed here. That was when I found Dr. Marisse so I booked an appointment. I found her originally on Zocdoc and the nearest appointment was in a month and a half. Within a day of making the appointment, I was called by the office to Nurse Shawna who wanted to make sure that I knew that all appointments needed a preliminary chat with the Doc, after which I could book my appointment. thanked me for letting her know that the next available appointment was that far away. It turned out there was a mix-up and that she did have more immediate appointments available. There is plenty of parking, as it is in shared parking lot with other businesses. However, there are two buildings with the same building number but with different locale numbers. Upper Echelon is in the building nearest to the AAA and the Farmer Boys. At the appointment, everything was clearly explained and we went over a sort of plan of attack, with regards to my concerns and what I needed to do. I appreciated paying less per month for the membership, which includes as many appointments as you want. The lab work and the tests are at wholesale prices so even with the membership fee and registration, all of this was cheaper than the plan I was going to get with insurance. What I appreciated was the quickness of getting an appointment. I have always hated waiting a few weeks, as a new patient, before actually being seen but I was able to book this within a week of the appointment. It was a week because their availability interfered with my work hours. Otherwise, I would have been seen earlier. All in all, it is pretty convenient and a wallet-friendly option. After that first appointment and the lab results came in, Dr. Marisse wrote a VERY long email detailing every point of concern. Which I appreciated because I went for answers and I was getting them. If you need a straightforward person to tell you what you need to be doing and not someone who has to be on your ass every step of the way, this is the ideal option. I would say the ONLY con is that they do not have appointments during the weekends. And since I work during the week, I have to take time off to go to an appointment.

    I always have excellent experiences at Upper Echelon Medical Office in Fullerton. From the moment I…read morewalked in, everyone was welcoming, professional, and made me feel comfortable. A special thank you to Shawna and Karla--they went above and beyond to provide outstanding care. They were incredibly kind, attentive, and took the time to answer all of my questions without making me feel rushed. Their professionalism, compassion, and positive attitudes truly made a difference and turned what could have been a stressful visit into a great experience. It's rare to find a medical office where you feel genuinely cared for, and Shawna and Karla exceeded my expectations. I highly recommend Upper Echelon Medical Office to anyone looking for quality care and exceptional customer service. Thank you both for making my visit such a positive one! Dr. Marisse is truly one of the best doctors I've ever had. She explains everything clearly, never makes you feel rushed, and always makes you feel like your health and well-being are her top priority. Her professionalism and caring attitude give me complete confidence in the care I receive. I highly recommend Dr. Marisse to anyone looking for an exceptional physician.

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    Upper Echelon Medical
    Upper Echelon Medical
    Upper Echelon Medical

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    Henry Kaw, MD - Physician-supervised Weight loss management.

    Henry Kaw, MD

    4.5(346 reviews)
    4.4 mi

    I've been a patient of Dr. Kaw's for a long time, and something I noticed over the course of…read moreseveral visits was that he'd be very impatient and trying to get out of the room as soon as possible, almost like he's in a hurry and doesn't have time to listen to all your concerns. On several occasions it felt like he spent 3 to 5 minutes, and I believe his max is 10 minutes. I never felt like he truly cared about me as a patient; it feels like a McDonald's drive-thru. One day, I verbally expressed to him that I felt like he spent very little time with patients, and he lost his patience and became super furious saying that he felt insulted. He immediately kicked me out of his office. He should go into high frequency trading.

    Dr. Kaw has been my primary physician for almost a decade since I moved to Fullerton. I switched…read moreto him after a bad experience with a St. Jude GP. What I like about Dr. Kaw is that it is easy to book an appointment with him and you don't have to wait for weeks on end like St. Jude. He quickly and accurately diagnoses any medical issues you may have and I appreciate his expedient, straightforward manner and friendly demeanor. His staff is also great as they are responsive on the phone and fill prescriptions quickly - sometimes while I'm still sitting in the office so that they're ready for pick up at CVS down the road after my appointments. He also went the extra mile in getting a prior authorization for meds approved from my insurance, who have been very challenging to deal with to say the least. If you're looking for a competent and reliable GP in North OC, give Dr. Kaw a call.

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    Henry Kaw, MD - Birthday and weight loss celebration for my husband and I!  thanks Dr Kaw

    Birthday and weight loss celebration for my husband and I! thanks Dr Kaw

    Henry Kaw, MD - False Advertisement!

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    Henry Kaw, MD - Ozempic and Moujaro

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    Ozempic and Moujaro

    Martin T Ahn, MD - familydr - Updated September 2026

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