Ahl Jeffrey Caseja | Endocrinologist | Whittier, CA | PIH Health
Ahl Jeffrey Gigante Caseja

Ahl Jeffrey Gigante Caseja MD


Endocrinology, Diabetes, & Metabolism and Internal Medicine
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4.5 / 5 (based on 309 Reviews) View 69 Comments
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Ahl Jeffrey Caseja MD is an endocrinologist specializing in diabetes, thyroid, adrenal gland, metabolism, and osteoporosis. After his residency in internal medicine at the UNLV School of Medicine, he continued his training in endocrinology at the Sunrise Health MountainView Hospital in Las Vegas. 

Dr. Caseja chose endocrinology because it requires a comprehensive understanding of physiology and biochemistry, combined with objective interpretation of labs with clinical symptoms. Growing up, he had witnessed family members suffer with diabetes which motivated him to go into this field. Endocrinology is rapidly evolving and he has an opportunity to make a positive impact on the lives of patients while building life-long relationships. Dr. Caseja always tries to ensure that his patients’ questions and concerns are addressed during their visits.

Dr. Caseja served as chief resident at UNLV and has received the UNLV Residency Teaching Award, the Endocrine Society Early Career Forum Award and the American College of Physicians Young Achiever Award. In his personal time, Dr. Caseja enjoys traveling.

Office Information

Hospital/Group Affiliation

PIH Health Downey Hospital

PIH Health Whittier Hospital

PIH Health Physicians





  • Endocrinology, Diabetes, & Metabolism
  • Internal Medicine

Additional Languages

  • Tagalog


Medical School

University of Santo Tomas (Philippines)


University of Nevada School of Medicine (Las Vegas)


HCA Healthcare Sunrise Health

Board Certifications

  • Internal Medicine

Patient Reviews

July 15, 2022
Dr. Jeff Caseja, explain everything regarding my case, he gives the details on my case in very understandable words to improve my health condition. He is listening carefully about my case and response carefully to what I need.
July 14, 2022
They did a very nice job. It's a very good doctor. Thank you.
July 13, 2022
First of all, good afternoon. The office staff treated me well and I felt good with the doctor. I got there at 11:35, not because there was heavy traffic, but because of this reason: the doctor (unreadable) and said that next time I should get their earlier, but in the end was able to see me out of pure courtesy and if (unreadable) then I can't receive care.
July 05, 2022
I'm not getting the help I need and I don't want to have surgery I know I have options but it seems like I'm not getting the help by this doctor I feel that if it was his family member he would go out of his way but since I'm not I guess I'm just another number ?. And my insurance does cover weight management and my being my has to be 30 and above my BMI is 38 this office or doctor does not look into my information with my insurance I'm not happy.
June 23, 2022
Have always been satisfied with my visits. Never had a problem with the doctor or staff.
June 22, 2022
It took too long to get the initial appointment and it took too long in the waiting room and in the doctor's office for me to be seen.
June 20, 2022
I get good care. The treatment is specific to me.
June 08, 2022
Hi. Everything is good except appointments call center. It's really difficult to get to a person for appointments. We had to wait one hours, one hour, sometimes more. That's only issue. That's the main issue for me is getting appointments we had to wait too long on the phone. Thank you.
June 03, 2022
All around perfect visit. Couldn't be happier with the doctor and staff.
June 02, 2022
Dr. Caseja and his staff are patient, polite and caring.
May 31, 2022
This Santa Fe Springs location is nit close to me like Whittier, it's a drive, however I'm willing to make the effort. Staff here at this location displays professionalism, phone etiquette, and respect. I'm happy and pleased now. The nurse working under Caseja, wow, she's amazing. She contacted me once she received my message. Thank you staff.
April 28, 2022
Seems like with his help, there is progress. I appreciate his help and his bedside manner.
April 26, 2022
Very helpful!
April 21, 2022
Friendly and spent the appropriate amount of time explaining everything so I could understand.
April 18, 2022
He was great. Look forward to seeing him again
April 14, 2022
April 13, 2022
Very nice gentleman explained things carefully, nice visit!
April 11, 2022
I did not receive a discharge summary of all the tests that were completed. I really would like to receive that. Thank you.
April 01, 2022
Doc failed to listen to my concerns and request for additionally testing. I express my challenges with weight loss and first response was that I was probably overeating and that I should consider diet pills. I haven't been offer to speak with a nutritionist if overeating is my problem. I express having two periods per month and was informed that is normal and no need to test for high elevation of estrogen or progesterone. Overall disappointment with quality of care from the endo department.
March 31, 2022
Dr. Caseja is not a caring doctor. He is impatient, snooty and disrectful in the way he talks. He looks down on his patient and makes you feel uncomfortable. No empathy at all, can't be trusted. Will find another doctor.
March 31, 2022
Very kind, thank you.
March 22, 2022
Dr. Caseja was annoyed at times when i would ask questions .
March 18, 2022
Dr. Caseja is the 3rd physician from endo that I've been assigned to, I hope he's here to stay for a long time, I like having a stable Dr. He was very insightful person, he listend to my needs and concerns I'm very grateful for that. Thank you Dr. Casejas, for you and your staff.
March 18, 2022
My first time to meet the doctor at this department office. Somehow he explained things understably and clearly. Will see him for check-up in another three months schedule. My experience went quite well.
March 17, 2022
I'm not happy with the $50 copay, or the 2 hours away from work to get info that I already had. They could have sent me and email or a phone call instead of wasting my time and there's. It was a follow up to lab work and the app sent me all the info I needed. Paying $50 and losing the time away from work was pointless.
March 15, 2022
Always impressed at the customer service I receive along with care. This endo dr was by far the best attentive and caring. Most respectful to all my needs and concerns.
March 04, 2022
This was the1st appointment so it was a lot of catch up over the past 5-6 years and plans for the future, taking it step by step.
March 03, 2022
This was first time meeting Dr. Caseja and it was a positive experience. I am hopeful we will develop a good patient/Dr. relationship.
March 02, 2022
Well I understand that there are issues that come up but it's really frustrating when I try to schedule an appointment months in advance, then a couple weeks prior see that my appointment was canceled through the app, but I never received any email or call or voicemail. So when I called to see why, they told me my thyroid doctor is no longer with them so I'd have to be given another doctor and a different appt. So my appointment was pushed back literally 8 months. I purposely picked an EARLY appt knowing that I'd have school or work and would need to get it done with quickly and early so I can continue with my day. Appt was at 8:40am, I logged in at 8:30am and didn't get helped till 9:20am but I needed to leave for school at 9:30 so it was cutting it close. I understand that some patients before me may take more time in their appointments but I believe doctors should be strict with the amount of time given because other patients are waiting.
February 25, 2022
This provider was the first time I saw him, and he wasn't really nice. He say he doesn't have to see me and because he wasn't talking to me correctly. So I told him I wasn't happy with him. And if you're not happy, you can change. I don't I don't want to see you. So to me,(INAUDABLE) I go to my doctor. I went to him because my doctor had an appointment until May, and he's not my doctor, but he wasn't very nice. He was very rude. Bye.
February 22, 2022
I liked it very much. I thought he was great,very professional. The only thing I didn't like is that I have to go to the Urgent Care. That was terrible. Waiting all that time for, being that I had an appointment. That's the only problem I have having to go to urgent care first. Other then that it was great.
February 17, 2022
He doesn't listen he looks at computer not patient!! I asked a question he said he didn't know about it and didn't follow through with question. He's only been doing this for a year. I can tell his age and he doesn't give a shit about me as a patient. I don't and won't recommend him to ANYONE! He's seems to be doing this just for the money. I've never had a doctor treat me like this. I feel like he isn't educated like the other doctors.
February 15, 2022
He took time to listen to my concerns and answer my questions, he handled my care very professionally and with knowledge of research that made me feel comfortable in his care.
February 11, 2022
The provider seemed like he was in a hurry and wanted to get out ASAP
February 08, 2022
He did not look into the computer to see my history, he assumed that eventually I'll need a kidney specialist because I am diabetic, seemed to be in a hurry and worked strictly off my insulin pump which I am not real tech savy as he is, I am just enough tech savy just didn't care for the service I wasn't real happy on my first visit
February 07, 2022
I think what I'd like to say, if you could make things better would be to quit changing who sees me in the office. I have gone from Dr. Mahmood to eat. It's good jettisoned. Now to a guy that just walked in and I had no idea who it was. It was like heat hardly even acted like it was his first time. It was very weird for me. I didn't feel like he was spending any time. I'm just tired of being shipped it around to the point where I may consider using another office. Thank you.
February 04, 2022
Dr is very through, kind and listened to all my concerns.
February 04, 2022
Was satisfied with his diagnosis, very professional .
February 03, 2022
Friendly and professional staff
February 01, 2022
I think what I didn't like at all was seeing the consultation by phone, I don't like that, I prefer to see the doctor in person.
January 31, 2022
Sometimes it helps patients for doctors to be a little bit more personal and spend more time. It makes us feel cared for. We see doctors for help, but a lot of times (at least my experience with this office and other doctors from here), the process is really fast and I hardly get to talk to my doctor. It often feels rushed and I feel like the doctors have more important things than just my alone time with them even if I'm paying to see them for their guidance. I really like Jeffrey and I feel listened to when I was with him. I just wish maybe he took an extra 5 minutes to display his care. the appointment felt a tad rushed but nothing he can't improve on. He's really good and addressing issues and coming up with a plan. Maybe just check in with patients to see how they're doing mentally, it would mean a lot!
January 24, 2022
I am super grateful to Dr and his team... I started to recover from my problem thanks to his advice and prescriptions. Super friendly office staff...Thank you all!
January 20, 2022
Dr. Was very knowledgeable and listened to mg concerns. The only draw back is getting an appointment
January 14, 2022
Nice doctor ,l felt ok and so far in good hands
January 13, 2022
The doctor is a good listener.very intelligent and a good communicator. Oit was a pleasure to meet him!
January 10, 2022
This was a video call with Dr. Caseja. I logged on about 5 minutes before my scheduled appt of 420pm. about 10 mins after i logged in a message came up saying Dr. was ready to chat. i waited.. i called the office, there were 4 callers ahead of me. about 5pm, the office staff called me and shared that Dr. was running behind and that he would be calling me shortly. approximately 503pm dr called and we had my appointment over the phone. i think besides him running late, their was also issues with the video chatting system thru PIH. i rather enjoy the video appointments, as it saves time, wear & tear on me and my car, as well as it is a very safe alternative in these crazy Covid times. thank you [PHI removed]
December 21, 2021
Everyone from check in to nurses were very professional, friendly and kind.
December 17, 2021
December 02, 2021
I have only had women doctors at this office, and I've been going there for over 3 years now, for about 3 years and no doctor has mentioned me getting on diet pills, or mentioned my BMI. Every doctor has talked to me about working out every... doctor has talked to me about calorie intake and watching my weight, which I respect because the thyroid condition has changed that. But I do not appreciate my BMI being mentioned or, offered diet pills.
November 18, 2021
The doctor's explanation of my current situation was clear. He looked at the data and set up a plan. What was very helpful was that he wrote all the instructions down.
November 18, 2021
Dr Jeffrey is WONDERFUL! Listened to all I had to say , answered all my questions and was so understanding and kind. Felt very secure that my Heath plan was in excellent hands. His staff, I MUST add, was just as considerate and friendly and kind!! And this was my first visit with this particular office
November 16, 2021
Loved the doctor
November 15, 2021
The entire staff were so professional. Dr. Caseja was very thorough and spent time explaining my diagnosis so I was well informed with my options. Went the extra step to provide me with printouts of each injection or infusion do I could do my own research. Also show me on his laptop the website to visit to research appropriate exercises to prevent further damage.
November 12, 2021
The Doctor gave me instructions. He explained and made sure I understood. I appreciated the information he gave me.
November 10, 2021
You can improve the timely when I have my appointment because they switch my appointment and then I had to I was waiting two hours there because they changed it and I didn't so, that's what they can approve it when they want to change your your appointment, and I didn't really appreciate that thank you.
November 10, 2021
Prompt and good appointment. Doctor even contacted me be phone afterwards with a concern.
November 04, 2021
(INAUDIBLE) Everything is okay. Only feedback, very hard to get the appointments. Sometime we had to wait months. That's the only concern. (INAUDIBLE) other than physicians, staff, everybody's okay. But if you can improve these appointments. You know, as a patient want that's appreciate that's the way we want it. Otherwise, you know, sometime hard. (INAUDIBLE)
October 28, 2021
I am looking forward to getting better control with my diabetes with the doctor's help.
October 18, 2021
I am very comfortable with this new provider that was assign for me. I know his experience will benefit me.
October 18, 2021
[name removed] from Check In/Lobby was condescending while speaking to me. I am 69 years old, I felt hurt. I would not wish to change my PIH. Sorry that [name removed] does not want to treat the patients with curtesy and respect. I have never had this happen to me. I am still hurt.
October 14, 2021
The first floor engagement with staff seemed fast and a bit uncaring. Example "Just sign-in and we'll get to." Could have been a bit warmer example. Please sign-in and we will assist you as soon as we can.
October 14, 2021
Dr. Caseja was professional and had reviewed my history prior to seeing me. He was able to explain my history, and explain my treatment.
October 13, 2021
Excellent !!!
October 13, 2021
I like the doctor
October 12, 2021
Very pleased with new doctor.
October 07, 2021
Thank you ALL. It was GREAT.
October 06, 2021
I was very impress with Doctor Caseja, he really seem very caring and explain very well what I need to do and how to take care of myself. And did not seem rushed.
October 04, 2021
The registration desk staff didn't assist with the registration in a timely manner. Even though I already registered on line and arrived 20 minutes early. Ended up did not get check in until after my appointment time.
October 01, 2021
Luckily for me I'm a fast talker, because this doctor tends to rush and speaks quickly. I had to correct him in regards to discussing a medication I was on. If I was older I would hope he would go slower when explaining things.He does go into detail to educate you about your issue. Overall pleased with treatment plan to address my health problem.
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