Christian John Gastelum

Christian John Gastelum MD

Specialties:

Endocrinology, Diabetes, & Metabolism and Internal Medicine
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4.9 / 5 (based on 372 Reviews) View 90 Comments
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562.789.5447

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Office Information

Hospital/Group Affiliation

PIH Health Downey Hospital

PIH Health Whittier Hospital

PIH Health Physicians

Profile

Gender

Male

Specialties

  • Endocrinology, Diabetes, & Metabolism
  • Internal Medicine

Additional Languages

  • Spanish

Education

Medical School

Cedars-Sinai Medical Center (California)

Charles R Drew Medical Center (California)

Keck-USC School of Medicine

White Memorial Medical Center (California)

Board Certifications

  • Endocrinology, Diabetes and Metabolism

Patient Reviews

November 07, 2024
Dr. Gastelum office is run extremely well. Dr. Gastelum spends the appropriate amount of time discussing any changes or suggestions, he may have. His bedside manner is extremely soothing and encouraging. I would recommend him for all diabetics and truly for anyone.
November 07, 2024
Dr Gastelum has been the best Endocrinologist ever. My husband (type 1 diabetic) and I look forward to seeing him. He listens, always makes us feel comfortable but always encourages us.
November 06, 2024
APPOINTMENT WAS FOR 10:40AM. DOCTOR ENTERED ROOM AT 11:20. WAIT TIME WAS TOO LONG.
November 06, 2024
Doctor Gastelum is very excellent doctor, who spends time explaining things about my health
October 24, 2024
I think he was probably one of the best doctors I've ever been to. I really appreciate that he listened to me, he was kind, he addressed my concerns. I didn't feel rushed at all and I really hope that I can continue visiting him. And thank you so much.
October 22, 2024
Excellent care
October 21, 2024
Dr. Gastelum is one of the best physicians at PIH! I respect him and his care, and his office staff is great!
October 17, 2024
Dr. Gastelum's knowledge was evident even from the first appointment I had with him on October 17th. I would love to see him again. I just wish there were more of him so that I could get an appointment much earlier.
October 17, 2024
Dr Gastelum is great. Office staff is not so friendly but he is. Always a great experience with him
October 15, 2024
I find Dr. Gastelum to be a great medical provider. He certainly keeps me informed, advised as to my condition, and has a great bedside manner. Thank you.
October 10, 2024
I really didn't feel comfortable speaking with Dr. Gastelum.
October 10, 2024
The staff and practitioners are great, however, it would be difficult to recommend this location when there is a critical access issue. Dr. Gastelum has the knowledge and compassion to save many lives and improve overall way of living but unfortunately, d/t availability, Patients will not be able to experience his gift.
October 08, 2024
Dr Gastelum is great. He always takes the time to explain lab reports, your specific conditions, medications so you understand. (Name removed) at the front desk was so pleasant and very helpful. Which is really appreciated, as most people now don't care enough to make you feel seen or heard. A+ for Dr Gastelum's office.
October 08, 2024
Dr. Gastelum is a wonderful doctor who listens to his patients and provides insightful feedback.
October 03, 2024
Make it possible to get an appointment in timely fashion. I had to wait many months to get an appointment with this provider who I really like. And it's very inconvenient. Fortunately, I did not have a serious problem that had to be dealt with. But the scheduling was difficult. Goodbye.
October 01, 2024
Was told on confirmation to arrive 15 min earlier then scheduled at 11. Was not called long time. I went up to desk to question why not called yet. She just said other patient with different doctor,never told me my dr running late. Then another 10 min questioned her again then told oh dr has 2 pts ahead of me, never told me before and I was only one in waiting room. So not taken back for approx.40 minutes. I understand doctor can be busy, but receptionist could have informed me on arrival it will be awhile or something. Would like to have been informed as I had arranged for caregiver for my husband. This is 2nd appt with this same receptionist same thing. I'm thinking next time won't come 15 min earlier than scheduled appointment time as told. Will I not be seen?
September 26, 2024
He went over all my labs and we discussed The results seem to Happy with all the labs and adjusted one of my medicines called Olympic He answered all my questions and I'm very happy to have him as my physician (PHI removed)
September 25, 2024
- Very knowledgeable provider - Staff was very respectful & courteous - Good overall experience & would recommend to family - Takes a long time to schedule appointments
September 24, 2024
excellent doctor
September 18, 2024
Would feel a bit more comfortable if some staff would have better grammar and pronunciation. Dr. G. Is great!
September 16, 2024
Dr. Gastelum made me feel comfortable and showed care while providing me with an opportunity to share any concerns I had regarding my health.
September 12, 2024
Yes, I just want to say that Dr. Gastelum, he is a very, very excellent doctor. Thank you for having him for my thyroid problems.
September 11, 2024
DR.GASTELUM AND HIS STAFF ARE SO PROFESIONAL AND COURTEOUS, I ALWAYS WALK OUT ON A GOOD NOTE, I JUST LOVE THEM , AND DR.GASTELUM IS THE BEST EVER!!!
September 03, 2024
I came early to appointment and they took me early which I do much appreciated. I would like to suggest before they make another future appointment please ask what my availability is due to my work schedule. I wish the dr would work Mondays or Fridays once in a while.
August 29, 2024
An appointment could not be made to return to this doctor.
August 27, 2024
Very nice doctor & takes time to explain things to me
August 26, 2024
Dr Gastellum and Dr (name removed) are the only doctors I will see at PIH. I don't trust any other doctors there. We've had horrible experiences with Dr (name removed) and your (word removed)
August 26, 2024
I had a great experience at the doctor's office. It was very quick, very easy to check in, and doctors saw me quickly after my vitals were taken. I had a great experience at Dr. Gastelum's office. Thank you.
August 22, 2024
I am always satisfied with Dr Gastelum.
August 22, 2024
It is always a pleasant visit with Dr. Gastelum, from the front office until leaving their office. The doctor is very attentive to what I have to say. He is very knowledgeable, very professional, and always pleasant to talk to. He is the true definition of what a doctor should be.
August 21, 2024
Dr. GASTELUM takes his time explaining all blood work results and is extremely professional .
August 20, 2024
I'm very happy with my physician and my health results under his care.
August 13, 2024
Dr. Gastelum is a professional who is very concerned about his patients and knows how to listen carefully to what the patient wants to ask.
August 07, 2024
He's an excellent doctor.
August 07, 2024
Even though it took me a while to get an appointment with Dr. Gastelum, it was worth the wait and seeing him. He listened, paid attention to my needs, to my worries, to why I was there. Highly recommend Dr. Gastelum. He's the best.
August 06, 2024
Dr. Gastelum is ready to listen and provide support with my concerns. I came in upset about my labs and vitals and Dr. Gastelum listened and eased my worries. He provided the necessary referrals and guidance to reach my health goals. I came in feeling defeated and left feeling in charge and ready to succeed. Thank You!
August 01, 2024
Hi, I've been with Gastelum for years. I think he's great. I especially like how he'll look at my test results and even go back years before. And, you know, I've got several issues that he looks at and he just takes them and makes sure he listens to me. I think he's terrific. Okay. Thanks.
July 30, 2024
Dr. Gastelum listened and explained my health in an easy ti understand and very caring doctor. Thanks for his excellent care.
July 24, 2024
Great doctor
July 23, 2024
Yes, with Dr. Gastelum it's very difficult to get an appointment because he's so in demand. And I think that office has probably one of the worst phone systems in all of PIH. And it's very frustrating to the patients who are trying to make phone contact. Thank you.
July 23, 2024
takes forever to get an appt in this office and then it is often cancelled for 2-3 more mo. Otherwise, I love the doctor.
July 23, 2024
It was a pleasure to work with him and has him as my doctor. He's brilliant and I just appreciate him a lot. Thank you.
July 18, 2024
Appointment are hard to schedule
July 18, 2024
My doctor is very knowledgeable and always has a positive attitude. He enjoys his profession.
July 18, 2024
Good Service!!
June 27, 2024
I trust this Dr to help me very knowleable/trustworthy
June 20, 2024
The office staff is difficult to reach by phone. I left several call back messages and no call backs. It seemed the phone system was not working, so I used the appointment line to finally connect with a person. My questions were answered timely.
June 13, 2024
Very good doctor, very good staff. His medical assistant is the best.
June 11, 2024
Did not care for his smirky attitude! And telling me my armour thyroid doesn't work for my body, and no food, or supplements can help my thyroid at either!!! I have been on Armour thyroid since i was in my late 40's, and it has worked through the years, with adjustments every now and then. I do not like to take any drugs, I am I to natural ways of healing. This is the only drug I take, and don't even want to be on this one at 72 years old!!
June 11, 2024
Had to wait over an hour later than scheduled appointment
May 22, 2024
Dr Gastellum, is the best endocrinologist.. he cares for all his patient's. He spends so much time explaining things and let's me ask all the questions I have. He's the best. His staff is amazing. His nurse Erika is awesome and nurse (name removed) is the awesome. Love this office
May 22, 2024
I had a 2:40pm appt. Dr. office called me at 12 noon and asked if I could come in at 1:30pm. I could not. Then they asked if I could come in at 2pm. I said yes, and was able to get to the office at 1:55pm. After arriving, I waited 40 min. until 2:35pm. I asked why they had asked me to come in early, if they were not going to see me early. The office personnel did not have an answer.
May 15, 2024
Always good
May 09, 2024
Excellent Doctor-His expertise was obvious, and he listened carefully to me. Great experience!
May 09, 2024
Dr. Gastelum takes the time to listen to your concerns and explains everything very thoroughly. I feel very confident that my health is in good hands and that he would recommend what is best for me.
May 07, 2024
Doc G is so kind and caring. Always listens and makes me feel heard. Addresses my concerns and never rushes.
May 01, 2024
Excellent Doctor.
May 01, 2024
Thank you
April 30, 2024
I like Dr. Gastelum, he listens to my concerns, and is able to refer me to other doctors when I have other needs. Thank you.
April 24, 2024
Dr. Gastelum and his staff were wonderful. They were kind , understanding, and patient. I'm grateful for the care I always receive in his office. (PHI removed)
April 18, 2024
The check in process was a smooth transition, the front end staff were very polite & Professional. The Dr was very knowledgeable about my medical concerns and developed a medical plan.
April 18, 2024
Dr. Gastelum is the first endocrinologist that I honestly feel I can trust with my healthcare. He was attentive and explained things to me about my hyperthyroidism that I did not know before. I didn't feel rushed. One thing I have to say is that when my blood pressure was taken by the nurse, I had just sat down and she did not give me the chance to relax a little bit before she took my blood pressure. I told her I usually take my Blood Pressure. In my left arm, but she did my right arm anyway. When I take my blood pressure at home, they say you're supposed to have your feet flat on the ground and your arm is supposed to be level with your heart. She did not do this. My arm was way higher than my heart. I feel that every time I have gone to that office they all take my blood pressure differently.
April 11, 2024
Dr is very clear,concise and Professional..
April 09, 2024
Dr Gastelum is very up to date with patient care and drugs
April 04, 2024
I'm only going to go with most needs improvement would be the communication from his back office to the customer or the patient in regards to prescriptions. I've been having issues since February trying to get a refill, thinking that when I went in to see him for my office visit on April that it would have been taken care of. And me asking personally if my prescription was going to be submitted to the pharmacy and then finding out they didn't, that it's being left on me to follow up with the insurance and yet not having them relay that information to me was very disappointing that I've been waiting for a prescription that no one's done any kind of movement on because I'm supposed to call and do a denial.
April 02, 2024
good experience. I will be back
March 20, 2024
great
March 13, 2024
Physician excellent! Follow up appointments horrible. He wanted to see me back in 12 weeks but no appointments for 20 weeks and not allowed to do the labs he requested until 17 weeks from now. So instead of having an answer to a problem, it has to wait.
March 07, 2024
The doctor's office is great, the staff is friendly, and Dr. Gastelum is wonderful. The only feedback I have is if I don't get an appointment when I leave, I've had to at times sit on hold for up to 45 minutes. So it's really hard to get a hold of the receptionist staff when you're not in the office.
March 05, 2024
Dr. Gastelum is the best provider I've ever had. I wish I could make him my primary physician. Ive had 3 different endocrinologists before Dr. Gastelum and none have never made me comfortable or explained my labs to me as in depth as he does so that I can understand them. He's always so thorough and listens carefully to all my concerns. I have already recommended him to my family member. He's the best endocrinologist ever!
March 01, 2024
Dr. Gastelum was both very personable and professional. He responded to all my questions and concerns and was genuinely interested in my ongoing welfare.
February 21, 2024
Thankful to Dr. Gastelum and his staff. Always respectful, helpful and Dr. Gastelum listens and is a great communicator!
February 13, 2024
This doctor is an excellent doctor, Gastelum. He listens to you, takes his time with you, explains everything you need to know about your care, and makes sure that you always have a follow-up appointment, walk out with your lab slips ready to go for when you see him next. I really appreciate him and his staff.
February 09, 2024
Great doctor explains everything!
February 09, 2024
Dr.Gastelum is a excellent provider, very satisfied with his care.
February 07, 2024
Dr Gastelum was amazing......easy to talk to, and he spent 40 minutes with me on my first visit. He was knowledgeable about my insulin pump and exuded confidence throughout the appointment. He is trustworthy.
January 23, 2024
Staff and provider were all professional and courteous.
January 16, 2024
The first question was answered, we answered it incorrectly. It should be a 4 and not a 1 for question number 1. Please correct. Thank you.
January 16, 2024
Excellent doctor.
December 19, 2023
It was very difficult scheduling an appointment with the endocrinologist because it had to be, once it was approved by primary, it had to be approved again by someone else to review. Once I saw the endocrinologist and a biopsy was requested, it had to once again be approved by another doctor instead of just the endocrinologist. So it was very frustrating since it's been trying to deal with this for the last three months. So again, very frustrating and a little disappointing.
December 12, 2023
Dr. Gastelum is a very thorough, respectful and professional physician. The staff is equally gracious and professional.
December 12, 2023
Doctor was very nice, very professional. I liked him a lot.
December 07, 2023
I just didn't like that I have to call to schedule my next appointment
December 04, 2023
I feel that the doctor knew exactly what he needed to tell me, but I feel like sometimes he spoke very fast and I would rather have some instructions written down for me to come back home to refer with. That's about it.
December 04, 2023
This was my first appointment with this particular doctor, he listened to what I had to say and under stood what I said. I really was impressed.
December 04, 2023
Everything is fine with the doctor. He is excellent and very professional, but the people who work in front where you come in to sign in don't even greet you. You talk to them and it's like they ignore you. Other than that, once inside, they're different, but the people in the front don't even want to speak Spanish and are very rude.
November 30, 2023
Dr. Gastelum is very kind, efficient, respectful, and professional. I fully trust my health in his hands. I follow his advice and my health has improved since he has treated me.
November 30, 2023
As always Dr Gastelum is tops. I would recommend to family and friends.
November 30, 2023
Dr. Gastelum is extremely knowledgeable about his specialty and takes time to explain how one's endocrine system works so that you understand your medical condition and how the various medications interact to improve one's health. He makes adjustments to medicines and/or dosages as needed. His trainee on this day (on rotation from Family Practice) really spent a lot of time with me reviewing my latest lab results. He explained to me what my "out of the normal range" numbers meant and reassured me about my concerns. It was a great appointment and I left in high spirits!
November 29, 2023
Dr. Gastelum always goes above and beyond to make sure that I can be in my best health position as possible.
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