Christian Gastelum MD | Endocrinologist | Diabetes & Metabolism Specialist | Whittier, CA 90606 | PIH Health
Christian John Gastelum

Christian John Gastelum MD


Endocrinology, Diabetes, & Metabolism
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4.7 / 5 (based on 552 Reviews) View 35 Comments
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Office Information

Hospital/Group Affiliation

PIH Health Downey Hospital

PIH Health Whittier Hospital

PIH Health Physicians





  • Endocrinology, Diabetes, & Metabolism

Additional Languages

  • Spanish


Medical School

Keck-USC School of Medicine


White Memorial Medical Center (California)


White Memorial Medical Center (California)


Charles R Drew Medical Center (California)

Board Certifications

  • Internal Medicine

Patient Reviews

January 13, 2022
I still believe Senior Citizens should be seen in person. I understand why the Physicians can't too.
January 12, 2022
Dr. Gastelum's staff is very attentive and caring, and Dr. Gastelum himself is a very empathetic doctor and very up to date on the type of medicine that he does - the endocrinology - and his follow through is amazing. When he ordered lab or appointment, I always get information in the mail regarding that, and his staff is so helpful, and I would recommend anybody to see Dr. Gastelum.
January 12, 2022
Dr. Gastelum provided invaluable info that I wish I would have received years ago. He gave me lots of great information. He also gave me hope that I will be able to get my condition under control.
January 10, 2022
Hey, I really appreciate you getting feedback from us. I really love my doctor. And I hope that he doesn't leave. I've been following him since we've gone. Thank you.
December 16, 2021
Dr. Gastelum is the BEST!
December 15, 2021
I think on the first question, I accidentally pressed one. It should be a 4. He's excellent. I really appreciate him. He has stellar care, and I don't ever want to change from Dr. Gastelum. Thank you very much.
December 15, 2021
Dr. Gastelum is brilliant. All I can say is "keep him happy"
December 10, 2021
Kind and listens to my active imagination and figures out what I am really asking. lol.
December 09, 2021
For me he is an excellent person, a very professional, good doctor, is an excellence in the profession in which he leads, an endocrinologist, he is the best doctor of doctors. God bless him, and you too, thank you because he is an excellent doctor. Bye.
December 07, 2021
It was a great experience. Dr. Gastelum was very nice, very informed with me. The staff was nice and it was very enjoyable. Thank you very much.
December 02, 2021
Great doctor
November 30, 2021
Dr. Gastelum and his staffs are very courteous. He's very caring.
November 19, 2021
Thank you - both Dr. Gastelum and his office staff (namely, name removed and name removed) treated me like I was the most important patient there.... and I am aware that others feel the same way. Thank you!
November 18, 2021
Since I have started going with Dr. Gastelum I have felt better than I have ever felt going to my other doctor's. I wish there was a way where he could become my main doctor, instead of th,e other doctors. The other doctors have left me on medicines, for years instead of helping me. It has destroyed my health. Dr. Gastelum listens to me and he has helped me greatly. I would recommend him to anyone or any family member. And I don't know what else I can say about him, I am very happy with Dr.Gastelum my health has improved with him.
November 16, 2021
Dr. Gastelum and his office staff always genuinely and professionally assist his patients with outstanding medical care. Thank you.
November 16, 2021
Excellent care!
November 16, 2021
Dr. Gastellum and his staff were all kind and professional. I'm grateful for the care I receive at this office. [PHI removed]
November 11, 2021
Awesome caring Doctor Gastelum and Entire Staff. Thank you.
November 11, 2021
Dr Gastélum is always very attentive and curteous
November 09, 2021
The situation is, it's impossible to get a phone call into the office. Sometimes, I have to call the other office, and then they connect me to Wittier office, and I waited on the phone for hours, trying to get an appointment, or to talk to somebody... And, I also think the communication between the doctor, and his nurses. It's not very good. He tells me one thing, and then something else is presented to me by the nurses. So there you go. Thank you.
November 09, 2021
Great Dr. Always knows about the latest and greatest medicines and treatments.
November 08, 2021
Dr Gastelum is amazingly knowledgeable and fantastic to deal with. I have never dealt with a doctor as wonderful as him
November 04, 2021
Ohh, yes. I think this office could really improve in the answering of the telephone. You know, in a timely matter... Most of the time I end up hanging up, or driving to the office because I cannot you know, get through. I mean, I wait too long. And I can take care of it, if I just drive over there, and come back. So if they would answer their phone in the in the staff, that answers the phone take care of your questions or problems that you're having with something. Either a prescription, or something that you need to pick up that, you told the doctor. The doctors great, but I just don't care for the answering.
November 03, 2021
The front office was somewhat indifferent to me, the back office was nice & polite! I have been help by them for years.
October 27, 2021
Great doctor.
October 26, 2021
Doctor is professional knowledgeable patient passionate
October 26, 2021
Yes, I am satisfied with the care of the doctor it depended, yes I am satisfied with the attention the doctor with the doctor attended me and (unreadable). I thank you for your attention. Bye thank you.
October 25, 2021
Dr. Gastelum, take the time to explain everything he shows concerned for his patient. He's very professionalable, knowledgeable, very helpful, and he makes us feel like family. We appreciate Dr. Gastelum very much. He is the best.
October 20, 2021
Dr Gastelum is always full of knowledge and shares it with me according to my needs. I appreciate the time he takes to explain things to me. Thank you
October 19, 2021
Excellent health professional. Friendly, respectful, and cares about his patient. He takes the time to explain and listen to the patient's questions and concerns so that he understands the medication plan to follow.
October 14, 2021
Dr Gastelum is great. Not pushy and explains things in non-professional terms so it's understanding to the layman.
October 11, 2021
As always, we are seen promptly at this one office, where we don't really have to wait. And Dr. Gastelum does listen carefully, and he shows overall interest in everything about you. Everything that relates to any questions that you ask. He takes the time to answer. We are very happy and very satisfied with Dr. Gastelum's care. And the people in his office are very courteous and pleasant to work with.
October 08, 2021
Answered all my questions, and took his time and did not rush to finished
October 08, 2021
Dr. Gastelum was very concerned about my, my help. And I would definitely continue being seen by him.Thank you.
October 07, 2021
I appreciated that Doctor was thorough and up to date on the latest studies and treatments.
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