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 133 Reviews) View 23 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

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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