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Marc-Alan Iwahashi, MD

Family Medicine
Marc-Alan Iwahashi image
4.7 out of 5, 
El Camino Health Medical Network

Family Medicine Sobrato

2495 Hospital Dr, Ste 450 & 460
Mountain View, CA 94040

Dr. Marc Iwahashi specializes in family medicine. He has been providing care to the communities surrounding El Camino Health since 1990 and joined the Silicon Valley Medical Development team in May of 2022.



As a family medicine physician, Dr. Iwahashi treats patients of all ages. He's a strong advocate for preventing disease with a healthy lifestyle. Dr. Iwahashi is committed to caring for the physical, mental and emotional needs of his patients, as well as their families. He is fluent in both English and Japanese.



Outside his practice, Dr. Iwahashi cares for his elderly parents. He enjoys spending time with family and friends and being outdoors as much as possible.

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Verified Reviews

The Patient Satisfaction Rating is an average of all responses to the care provider related questions shown below from our survey. Patients that are treated in outpatient or hospital environments may receive different surveys, and the volume of responses will vary by question.
4.7 out of 5
315 ratings,
29 reviews
2/17/2025
Dr. Marc Iwahashi is incredibly knowledgeable, can clearly communicate his recommendations, explain them, as well as offering the available options and how to proceed with them. I highly recommend Dr. Marc.
2/15/2025
Outstanding
2/15/2025
We completely trust Dr Iwahashi. He always explains the health conditions and treatment very clearly in everyman's terms.
2/8/2025
I really like Dr. Iwahashi and think a lot of other patients do as well; yes I would recommend him, but that could make it more difficult to get an appointment with him in the future.
1/22/2025
I have been indebted to Dr. Iwahashi for a long time, and I trust him very much.
1/14/2025
The doctor had a full awareness of my health, and he instructed the nurse to clean my ears. She did a through job and my ears and my body feel much better now.
12/20/2024
I have extreme respect for Doctor Iwahashi.
12/16/2024
Dr. Marc Iwahashi is an excellent doctor and I will continue to go to him. He is very knowledgeable & caring physician.
12/11/2024
Thank you for your treatment.
12/7/2024
Dr. Iwahashi has been my doctor for just about 20 years. He has been great, kind , and efficient
11/25/2024
Again, wish there was more time to discuss my concerns; though we covered a good many issues. Since this was my first physical examination in a while (due to previous provider retirement and covid-19) my health is in a different place and novel aliments (at least for me) so have a desire to ask a lot of questions (no longer want to use free google - medical stuff, since you get what you paid for there.)
11/4/2024
Dr iwahashi is my doctor over twenty years. He is amazing. I'm so glad have him as my doctor.
10/31/2024
They listened to me kindly and made me feel safe.
10/26/2024
Both Dr.Iwahashi and Valerie were excellent!
10/24/2024
Everything related to my health was discussed and Answered. I am very happy.
10/18/2024
Dr Iwahashi is the best Dr. One could have. Been going to him since he was in Cupertino early in his practice and he always steered us in the right direction when we needed it. Expertise, caring, always able to talk with him.
10/1/2024
I was relieved to be able to communicate in Japanese.
9/29/2024
Dr Iwahashi is an excellent doctor!!
9/23/2024
It was very good about the routine medical examination.
8/25/2024
Dr. Iwahashi always goes above and beyond.
8/15/2024
Dr.Iwahashi is an excellent caring physician.
7/29/2024
Dr Iwahashi, spent an hour with me, knowledgeable, very informative, concern and truly took the time to get to know me, since this is my first visit. Very reassuring, so friendly and just caring. The old fashioned way of visiting a doctor. I was not rushed and made me feel good when I left. He is a very good doctor. Thank you.
7/29/2024
Dr.Iwahashi was a truely relyable doctor. His concern of your better health is more than mine.
7/24/2024
Thorough review of medical records, background and relevant information. Investigating symptoms, reports and other relevant facts.
7/20/2024
Excellent care
7/18/2024
Dr.Iwahashi is always polite and nice.
6/3/2024
Everything was super.
4/6/2024
Dr. Iwahashi has been a great medical provider for many years.
3/29/2024
Very Exceptional

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Map & Directions

Family Medicine Sobrato

2495 Hospital Dr, Ste 450 & 460 Mountain View, CA 94040
Monday - Friday

8:00 am - 5:00 pm

Saturday - Sunday

Closed