She is such a caring and very experienced doctor. So easy to talk to and she makes you feel like you're special.

Had a colonoscopy with Dr. Hierro. Dr. Hierro is the best; perhaps the kindest, most knowledgeable and most thorough doctors I know. Recommend Dr. Hierro 100%. read more

Martha E Hierro, MD - Gastroenterologist Near Me - SANTA MONICA, California

Dr Hierro is a skilled, professional and personable GI! I've had 2 colonoscopies by her; she always puts me at ease and so does her anesthesiologist. The procedure is short, quick and over before you know it! I highly recommend her. read more

She is a fabulous, empathetic, relatable, listen well a rare find today. If you need a gastroenterologist, I highly recommend her skilled caring professional. read more

First and foremost Dr. Heirro is by far the best Gastroenterologist I've ever had the pleasure to help heal me. She truly cares about her patients and goes above and beyond to help make them feel cared for. Before her I was being sent back and fourth to many drs who had no idea what they were doing, pumping my body with hundreds of dollars worth of medication that was useless and making me more sick, that was back in 2012, then I was blessed enough to have been placed in Martha's care, she ran tests and immediately knew what I needed to do as far as treatment. Circle around to 2021 I had contracted C-diff again due to negligence through another hospital, and was searching for Dr. Heirro again and thankfully I found her! When you visit her office, you will always feel welcomed, and her staff works so well with contacting you and making sure everything is up to date and you are okay. If you're considering using Dr. Heirro as a Dr, you will not be disappointed. She has saved my life twice already! Thank you again Dr. Heirro, you are the best read more

Dr. Martha Hierro has been my doctor for 15 years or more ..I would never see anyone else....3 colonoscopies and 2 upper GI's..I am neurotic beyond ...She is professional , comforting and the best doctor ever ...I am one of her biggest fans...A shout out to Pearl also who handles the front desk ...Thank you from the bottom of my heart for dealing with my severe neurosis ..I love you .....Phyllis Weiss Greenberg.. read more

Dr. Hierro and Dr. Martyak have literally saved my life on a few occasions. I was referred to Dr. Hierro back in 2007/2008 by another GI doctor from UCLA. From the get go, Dr. Hierro was my biggest advocate. She was by my side when I was hospitalized in 2008, 2009, 2010 and my worst flare up in 2011. (It was during the 2008 St. Johns stay that she introduced me to Dr. Martyak.) Dr. Hierro was ALWAYS available to me for questions and concerns. Dr. Hierro and Dr. Martyak have worked together to get me where I am today - remission. Trust me, this was not an easy road. Dr. Hierro is kind, knowledgable and an excellent doctor. Two things I absolutely respect/love about Dr. Hierro - she collaborates with other doctors and she encourages "alternative" treatments. (Acupuncture and ALCAT testing were game changers for me.) She is, without question, one of the best GI doctors I have ever encountered. Period. While I'm writing a review, I should mention her nurse, Roxy. Wow, just wow. Roxy has always gone above and beyond when it comes to patient assistance. read more

I am very fortunate that Dr. Martha Hierro has been my Gastroenterologist performing all my colonoscopies. Each time, I felt reassured as she listened carefully to any preparation concerns and guided me gently so I could relax and prepare calmly for the screening procedure. As we cross our mid years threshold, we all dread being told we should do a colonoscopy. Dr. Hierro's professional expertise, thorough review of our medical history combined with her warm caring attentive manners with her patients put us at ease as we plan for our day. I am so glad to be able to see Dr. Hierro again in her new office, and know that I am in the BEST hands for my next screening! read more

Dr. Hierro is truly a gem. She has been caring for my elderly father for several years. Dr. Hierro is kind, patient, knowledgeable and has a wonderful bedside manner. She listens to my father and finds solutions that are both effective and empathetic to his stage in life. She gave me her cell phone number and encourages me to call her with any issues that come up outside of normal business hours. I feel so lucky to have my father in the care of such an experienced and loving doctor. read more

I got referred to Dr. Hierro because I kept having stomach pain among other symptoms after a brief stay in the ICU for a blood clot, a few years ago. Everyone else kept saying that it was anxiety related or that I was young and probably drank too much. Other doctors I've seen have told me to take pepcid or to drink less. I never drink so it was starting to infuriate me. I had severe abdominal pain and nausea. Dr. H was the ONLY doctor that I have seen in the past few years (since the icu) who actually gave a shit. No one else cared. To pay someone $600 with insurance to just brush you off and essentially calling you a hypochondriac is ridiculous. Not only was she thorough and ordered a bunch of blood tests, ct scans and MRIs, she found the issue. When no one else could. And on top of it, she knew my financial situation was tough after the hospital bills, so she tried as hard as she could to find samples for medicines that insurance wouldn't cover! She is a caring and talented, and an amazing individual. As a side note: I noticed that a lot of patients wrote that she is never on time. Although my schedule is packed (as I have 3 jobs), I am patient because she is worth it. The ONLY reason why her wait is long is because she is extremely busy between procedures at the hospitals as well as office visits. And during an office visit, she LISTENS to you (in a world where everyone just wants to talk and no one ever listens) and you don't feel rushed out the door before you've said what you have to say. If anyone has complaints about that, go to an urgent care or the ER and see how long you'll wait. read more

I was about to leave a review for Dr Hierro as we are going in for our 2nd (standard checkup) colonoscopy. And, I was very surprised at the negative reviews. Our experience has been very different. We particularly noticed how POSITIVE and HELPFUL we found the Dr's manner in communicating with us. We learned of Dr Hierro from our OB/GYN because it was time for our first colonoscopy. We met with Dr Hierro - There was a wait, but I do have a few doctors that I wait for. This is something I feel I experience with the doctors that tend to give me all the time I need - vs the many others who make me feel rushed. Once we saw the Dr , we found her amazing unassuming, listens completely and addressed our fears and concerns. She gave us all the time we needed - which was quite a bit our first time. The biggest thing I appreciated was her thorough advise on the anesthesia we could use with the least side effects (I suffer greatly from General Anesthesia). She also put me greatly at each by sharing the journey we'd be taking. We had that colonoscopy and it was a very professional and comfortable experience. Later - a few years- I had problems with my digestion. Dr Hierro spent time with me, took a stool example. We came up with a plan - and we kept in touch. I was able to get through my problems and got better. It turned out I had Gallbladder "sludge " (happy to share with anyone suffering with this - as I found the very best treatment for this ) ... ANYway - Now today, we needed to go back for our 2nd colonoscopy. Again , Dr Hierro gave us the time we needed. Her team worked with us and the Dr to find a way to fit us BOTH in on the same day so we can go through this together. I also have always gotten the feeling that Dr Hierro is a proponent of Colonoscopy. read more

I have been going to Dr. Martha Hierro for many years and she is the most passionate doctor you would like to meet. She has a wonderful bed side manner and takes the time knowing your concerns. I've had one Endoscopy and two Colonoscopies and was very comfortable with her procedure. Also, her staff was very accommodating. I have referred several other people to Dr. Hierro and they were very happy with her professionalism and treatment. She is the best!. I would like to comment on the people Amanda M and Trace F. What you wrote was absolute nonsense and untrue!! Dr. Martha Heirro is one of the top gastroenterologist in the city!! -- read more

Dr Hierro Is exceptionally intelligent, thorough, and kind. If you have complicated Gastrointestinal issues, as I have for many years, she will leave no stone unturned in helping to diagnose and treat your condition. I appreciate that she doesn't immediately want to do invasive procedures. I highly recommend her, and even if you've had difficult experiences with other doctors, as i have, you will be relieved and feel cared for and safe with her. read more

Dr Martha Hierro is one of the kindest, smartest and most thorough doctors I know. She listens and takes the time to do a full work up and saved my life years ago when I had antibiotic related c diff and was so sick, in hospital. Dr Hierro has given me 3 colonoscopies over the past 20 years and she is so incredibly skilled, gentle and always professional. I trust her care implicitly and would recommend her as one of the truly finest gastroenterology doctors anywhere in Southern California. read more

I have been going to Martha Hierro for over 20 years. She knows what she is doing and is very compassionate. Would recommend her 100%.

I've been going to Dr. Hierro for over a decade. She's wonderful! If fact, I travel from Washington state because she's that good!

Dr Martha Hierro is the best of the best. She has an excellent education, years of experience and a truly caring manner. I went in to the office anxious and she put me at ease immediately with her warmth and totally no-rush style. I really can't recommend her highly enough. read more

Dr. Hierro is a wonderful doctor and has performed all my colonoscopies. She has my complete trust, and is an empathetic and kind person.

Horrendously negligent doctor who ignores problems until it is too late. Scatterbrained and will leave you in the lurch. Do not go to this person. She will not do right by you. Her office staff is fairly well a mess, run by overfed people who talk about lunch while you sit in the waiting room for no less an hour, sometimes two. Oh and they openly discuss other patients. Unprofessional, but that comes from the top and trickles down. Without tearing into Hierro too much - cuz I could - just heed my and other helpers warnings. Avoid. read more

This is the THE MOST UNPROFESSIONAL MD !!!!!!i I Have seen on the west side!!!! You wait two hours and then she babbles and will take a break in front her patients if you have an appointment you will be their for hours !!!!!she is absolutely absurd !!!!!!!! I will never go back to this person and I will tell all the locals of Santa Monica don't even waste the time I wish I could have gave her no star !!!! As a supposed professional that comes highly recommended In which I will back and tell my primary doctor if these are the kind of people she refers I will have to second guess her as well !!! This absurd doctor needs a reality check who does she think she is!!!!!! read more

She is kind, patient, thorough, gentle and an all around good Doctor We have been seeing her for years and always makes time if we need to get in to see her. read more

This doctor has the best bedside manner I have encountered in years. She actually spends time with you, discussing your history and your needs. She is professional, intelligent and careful, as well as kind and thoughtful. I am referring all my friends to her. Such a great find in this day and age of drive-by HMO medicine--she is a modern practitioner with an old style approach to patient care. Well worth the wait.. My only regret is that she is not a general practitioner that I can see for all my health care needs. read more

The best doctor that I have ever seen. Dr. Hierro is outstanding! She is extremely professional and knowledgeable. She spent so much time with me and truly listened to my concerns. She asked lots of questions and I was so impressed by her and her office staff. The staff was able to fit me into her schedule, which I appreciated very much. In addition, I had an issue with my insurance RX and her office took care of all the details. Roxy was so helpful and followed up and was able to get the approval. They made sure I was well taken care of and made every effort to help me. I definitely recommend Dr. Hierro. She genuinely cares and is very down to earth. I feel like I could talk honestly with her and I know she would help me. Don't believe the reviews. You may need to wait to see her, but it's only because she is seeing other patients. It's nice to not feel rushed when it your turn, so it's worth the wait! read more

Dr. Hieroglyphs is one of the best doctors I have ever encountered. She takes the time to talk to you and answer any concerns you have. She has a most pleasant manner. She cares about her patients. I have confidence in her knowledge and experience. read more

She is AMAZING! I have major anxiety issues, and Dr. Hierro was able to talk me through every step and calm my worries. The procedure was easy-breezy (honest!) - Patty, the nurse anesthetist was so kind and put me right at ease, and Dr. Hierro is SO PATIENT and comforting! They actually found VERY EARLY malignant cells, so early that the prognosis is good! SO GRATEFUL I DID NOT WAIT ANY LONGER! Don't wait! Don't put it off! Even the prep is not so bad with special hints Dr. Hierro will share with you beforehand. For your sake, and the sake of those who love you, call and make an appointment and put your worries behind you!!! read more

She is the BEST! By far the best doctor I have ever met in Los Angeles in 38 years! Today, I just came from a regular procedure she has been doing with me 5 or 6 times. I have been a very fortunate patient of Martha Hierro for many years and every time she surprises me with her knowledge, patience, and ability to connect with me and explain whatever is going on. She is very personal and I HIGHLY recommend her to anyone. read more

Dr. Hierro is an excellent doctor! She is compassionate, kind and extremely knowledgeable. I am blessed and honored to be able to call her my doctor. She has gotten me through the hardest times in my life and I honestly do not know what I would have done without her. Dr. Hierro is not just my doctor but I consider her a trusted friend and role model. She has always been there for me and I cannot thank her enough for being so generous with her time. Her advice and support over the years have truly meant the world to me. God bless Dr. Hierro! She is the best doctor out there and her staff is excellent. Nurse Roxy is absolutely fantastic! Please do not hesitate contacting her office and making an appointment. You will not be disappointed. read more

If you want to feel better DON"T GO SEE THIS DOCTOR! The WORST! i was in the hospital for A MONTH LONGER than planned becasue she couldn't figure out the problem and wouldn't get someone else in. She blabs like a schoolgirl and DOES NOTHING to help. She even came to see me in the hospital (on my final straw with her - after one month) and actually left! the nurse said the doctor came but didn't see me, so she left. I was in the friggin bathroom....DUH! I cringe when I think of this woman. My bill put her kid thru the private school she bragged about but she is inept!!!! read more

DR. MARTHA HIERRO is the best in her field! Whether you need a colonoscopy or you have a health problem, she takes the time to make you feel like you're the only patient that matters. Highest recommend! read more

Extremely long waiting times, very poor follow-up, consistent overbooking Both my husband and I recently became her patients. I had read only nice things on Yelp, however, even though her bedside manners are extremely good, there are many things that are absolutely terrible: 1. Average time to get an appointment (incl. follow-up appointments) is 2 -3 months (not weeks) 2. Waiting time for office visit: between 45 min to almost 3 hours. Watch out for parking fees - they don't validate and the street parking around her office is very limited. 3. Waiting time for procedure: Unless you're up at 8am, expect to wait 2 to 3 hours (and that's after prep and fasting) 4. They don't have an Anesthesiologist MD, just a specialized nurse - and some patients are quite ill. They did not treat my husband very well; it was a very traumatic experience, which left him incapacitated for several days; even though he had spoken to Dr. Hierro about his health situation before. 5. Follow-up is (so far) non-existent; I was told I would get the results of my biopsy within 10 days - it's been over 30 days. 6. Follow-up appointment: I was directed to her voice mail to "squeeze me in" - no response. She seems to consistently overbook. As nice as she is, I will not go back to her. read more

Doctor Martha Hierro isn't just an outstanding doctor, she is clearly an angel! This is the kind of doctor we all pray for. From your very first meeting with her, you know you're in very special hands. She takes time to get to know you and thoughtfully considers the whole person, never rushing you in and out. After she thoroughly and carefully examines you, she makes thoughtful and spot-on recommendations with follow through appointments. Her devotion to her patients is clearly at the top of her list. She has made frequent hospital visits to my husband in the midst of was clearly a very demanding schedule, even on the weekends, putting the needs of her patients first. I have always found her office staff to be kind and responsive, though you may need to wait a while for an appointment, it's worth it. If you have any kind of a GI issues at all, I HIGHLY recommend Dr. Martha Hierro, doctor to the doctors. SHE HAS BEEN OUR ANGEL! read more

This doctor and her office never bothered to call me about my biopsy results which pre-cancerous condition. When I called to followup on the results about a month later, the doctor had her nurse give me the results. read more

I, my wife, and 2 of our adult children have all seen Dr. Hierro and have had nothing but the best treatment. We have always felt that she was 'there" for us in every way. While it often takes a while to get an appointment, that might be expected for a doctor of her caliber.The occasional long wait in her office might be because she spends so much time meeting the needs of each patient. Again, we are so grateful for a doctor who is so "there" for us. read more

I was diagnosed with non-curable cancer 7 years ago and have seen numerous, delightful doctors through my ordeal. In in all those years I have never been so mistreated by a specialist as I was by Dr. Hierro. I was scheduled for a colonoscopy with her and had to stop my blood thinners but she screamed at me about my questions, swore and then hung up on me. Maybe I ask too many questions but she was incredibly nasty. My oncologist at UCLA is head of staff and he had never heard of such poor behavior. He called her on it for an apology but her staff never put him through. Be warned to stay away! read more

Dr. Hierro has an excellent bedside manner. She is kind and caring and makes you feel comfortable. I recently had my first colonoscopy and found the entire process as pleasant as that could be. Her staff seem well trained, organized, and conducting the procedure with a well practiced routine. Most everyone fears this procedure but she made it completely painless and removed all fears about it for me. She was recommended to me by a friend who also had a great experience and I later found two other people who have also seen her and think very highly of her. Her bio on her group's website also instills confidence in her experience. read more

No appointments does not make a good doctor. Impossible to get in for an emergency. That is not right. But she will take the money she makes from all her colonoscopies read more

Dr. Hierro is one of the best GI doctors I've ever had! Her staff is also welcoming and excellent and accommodating! She is so compassionate and very interested in both your medical issues, as well as you as a whole person. I've had a chronic GI problem for about 7 years and have gone through several other doctors, highly recommended, and well-respected too, but I have never felt better in the hands of Dr. Hierro. She has a special talent in caring for her patients. I met her during one of the scariest times in my life and she made me feel comfortable, cared for, safe, and like I was a priority. You can't go wrong with Dr. Hierro as your doctor. I have been recommending her left and right to friends I've met through my health problems! read more

Dr. Hierro made the colonoscopy procedure a pleasant experience. She is a down to earth person who makes you feel comfortable. The staff was great too. From prep time to recovery is about 2 hours. I did not feel groggy. In fact I had beat in my step. If your in Santa Monica and in need of a colonoscopy, Dr. Hierro is the doc for you. read more

Dr. Hierro has been my doctor for about 18 years. She has always been professional, well-informed, helpful and prompt. She takes a holistic approach to health, investigating many aspects of your life before making a diagnosis. She's completely up-to-date in her field. When I was a starving student, she helped me find OTC medicines when prescription medicines were not in my budget. I whole heartedly recommend her. She bends over backwards to be helpful and she's smart. read more

I was shocked to read a negative review about Dr. Hierro! I have been seeing Dr. Hierro for almost fifteen years and she is the BEST GI. When I was first diagnosed with my disease, I was sent to another GI who had absolutely no bedside manners, was not understanding because I was very young and most of their original GIs patients were older. I was referred to Dr. Hierro by a new primary physician I had started seeing, understanding the fact that I was young and needed someone who was more willing to work with me and not against me. Being Dr. Hierro's youngest patient for some time and literally growing up with her, I can honestly say she has been there for me for various occasions and was always supportive not only of making sure I was healthy but my personal endeavors (school, work, life, and so forth). I even moved away for school and she still was willing to see me and work with me. She is extremely caring and patient, plus she listens and tries to work with you individually as a patient. I could not have asked for a better GI to help guide me through these years with my disease. I highly recommend Dr. Hierro! read more