Jason S. Ling, MD
Fullerton, CA 92835
- Mission Heritage Medical Group and Affiliated Physicians
- St. Joseph Heritage Medical Group and Affiliated Physicians
- St. Jude Heritage Medical Group and Affiliated Physicians
Fullerton, CA 92835
St. Jude Heritage Fullerton - Endocrinology
100 East Valencia Mesa Drive, Suite 105, Fullerton, CA 92835
Insurances Accepted
This information provides an overview of accepted insurance plan types. Coverage may vary by specific plan. Please verify your with your insurance provider before visiting us for care.
- TriWest - Tricare
- United HealthCare PPO
- Providence Health Plan - Medicare Advantage
- Health Net - Medicare Advantage
- Blue Shield of CA HMO - Trio
- SCAN Medicare Advantage
- Blue Shield of CA Medicare Advantage
- Aetna Medicare Advantage PPO
- Anthem Blue Cross HMO
- Blue Shield of CA PPO
- Multiplan PPO
- Aetna Medicare Advantage HMO
- Anthem Blue Cross Medicare Advantage
- Aetna HMO
- Cigna PPO
- Anthem Blue Cross Medicare PPO
- United Healthcare HMO
- Health Net PPO
- Blue Shield of CA HMO
- US Family Health Plan - TriCare
- Cigna HMO
- Aetna PPO
- Anthem Blue Cross PPO
- Health Net HMO
- Vivity by Anthem Blue Cross
- HealthSmart (Interplan) PPO
- Coventry/First Health PPO
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About Jason S. Ling
Dr. Jason Ling is a board-certified Endocrinology Specialist based in Fullerton, California. He is also board-certified in Obesity Medicine, Clinical Lipidology, and Certified Clinical Densitometry by the International Society for Clinical Densitometry.
Serving as the physician site director of St. Jude's Endocrinology group, he plays a role in overseeing and leading the endocrinology team. Additionally, Dr. Ling serves as the co-medical director of the Bone Health Program at St. Jude, where his goals are to prevent reoccurring fractures.
- American Board of Internal Medicine, Internal Medicine
- American Board of Internal Medicine, Endocrinology Diabetes and Metabolism
100 East Valencia Mesa Drive, Suite 105
Fullerton, CA 92835
Providence St. Jude Medical Center
Community Reviews
At Providence, we're dedicated to providing you quality, personalized health care. We are constantly striving to optimize your experience.
As part of ensuring you have a positive experience with Providence, our online provider directory includes ratings and patient comments for select providers. More about our survey.
Always very competent care
Providence Patient
The doctor was very knowledgeable easy to understand and professional during my visit with them
Providence Patient
Very thorough
Providence Patient
Dr. Ling is a wonderful doctor. He is attuned to my health and I trust him with each decision he makes for my diabeties. I have recommended Dr. Ling to several of my family members, co-workers and friends. Truly one of my favorite doctors!
Providence Patient
Doctor answered all my questions that I had for him. My experiences was very good with him.
Providence Patient
Dr. Ling was prepared and helpful.
Providence Patient
Dr. Ling is an excellent doctor.
Providence Patient
Jason Ling MD. Always listens to my questions and I receive excellent support for my Insulin pump. The adjustments made are great and needed.
Providence Patient
Dr. Ling always takes the time to discuss any of my medical concerns. Of all of my physicians, he is he most patient and thorough.
Providence Patient
Always exceptional
Providence Patient
Dr Ling and staff are the only reason I use St.Jude Medical Group.
Providence Patient
Excellent
Providence Patient
Excellent care by Dr. LING
Providence Patient
Dr. Ling listened and adjusted what was needed. He showed me the data and let me ask questions. He verified answers that were from before his time with me but within the practice. I came away feeling more positive about this time in my health life than I have been.
Providence Patient
All good
Providence Patient
Dr Ling is easy to talk to, he listens and always has good advice. Couldn't ask for a better doctor.
Providence Patient
Very understanding.
Providence Patient
Always listen to the needs and the medical concerns of the patients. Provided accurate with detailed information about the prescription pro and cons.
Providence Patient
Dr. Long is great but I would like to see a more holistic approach provided.
Providence Patient
Dr Ling and very knowledgable and personable. He explains his rational for any treatments or adjustments to medication. For me, that's what I expect from my physicians. Unfortunately ,or fortunately, Dr Ling seems to be in big demand. His available appointments are usually beyond 6 months which can make patient scheduling difficult.
Providence Patient
Always great Dr
Providence Patient
Dr Ling is a specialist I put my trust in to provide the safest and best care for me. He is always compassionate and fully listens to my concerns and discusses them with respect for my view. His staff is always kind and professional and an asset to his office.
Providence Patient
Receive all the care I need from Dr. Ling
Providence Patient
Generally good. Some trouble in getting in person exame with doctor in reasonable time.
Providence Patient
Dr.Jason Ling is knowledgeable and courteous and listens to the patient. I am very satisfied with him.
Providence Patient
Dr. Ling is very caring Dr. He explains to me about my prescription I am taking. Goes through all my blood test & explains everything to be.
Providence Patient
Very friendly staff . The Doctor took his time and I did not feel rushed.
Providence Patient
I arrived early and was able to see the doctor early.
Providence Patient
Always polite, attentive & informative
Providence Patient
Dr. Ling is the BEST!!!!
Providence Patient
To provider was able to spend time with me to discuss problems.
Providence Patient
Dr. Ling is the best. I know im getting the best treatment possible under his care.
Providence Patient
Excellent attentive doctor and staff
Providence Patient
Love Dr. Ling!!!
Providence Patient
He is always kindness and patience with me for my questions and concerns.I felt comfortable during the visit.
Providence Patient
Personable and informative, inspires confidence that he is thorough.
Providence Patient
Dr ling does not spend enough time with me during the visits.
Providence Patient
All good! It was nice to see Dr Ling.
Providence Patient
Dr Ling is an excellent physician. He is prepared, knowledgeable, friendly, courteous, and well informed. He takes the time to listen to you and answer your questions. He is a great asset for Providence.
Providence Patient
Excellent.
Providence Patient
I like him because he listens to my problems and gives me good advices. He spends enough time for the video visits and answers my questions thoroughly. He's a very nice doctor.
Providence Patient
Dr. Lings been my specialist 2 years now. He looks put for my health, is always respectful & knowledgeable, communicates so incredibly wonderfully & I know he has the best interest of my health in mind, which is why I've continued to have him as my specialist 2 years after surgery. Thanks for all you do Dr. Ling!! You are amazing! See you next year.
Providence Patient
Always helpful and very thorough
Providence Patient
Dr. Ling is extremely positive and supportive. He made me feel good about my progress in my health care journey.
Providence Patient
Everyone was awesome as always Dr Ling is very kind and helped me understand my condition better.
Providence Patient
During the past three, there was a great need not only for my medical team to be involved in my care, but the ER and hospital. I am grateful for all their attention. I am still being monitored by my medical team.
Providence Patient
Dr. Ling changed my life.
Providence Patient
I am very comfortable speaking with Dr. Ling about my current health condition.
Providence Patient
The provider offers very practical advice.
Providence Patient
Exemplary, professional, and pleasant.
Providence Patient
Pleasant, responsive and at ease
Providence Patient
Very cool'
Providence Patient
Excellent caring service
Providence Patient
I honestly love and appreciate Dr Ling he truely shows he cares about his patients and what they are concerned about. He takes his time with his patients and remembers things even if it's been 6 months or more that he hasn't seen them. That honestly is hard to find now a days with doctors
Providence Patient
Never had a bad experiences with this provider.
Providence Patient
Very satisfied with my doctor
Providence Patient
Dr. Ling is thorough in looking after my thyroid, using labs and ultrasounds to monitor it. He also checks my whole health. It's very comfortable to me to ask questions and talk to him about my health. He listens and gives clear, understandable responses and advice.
Providence Patient
Dr. Ling is a very intelligent, kind, polite, patient Doctor who is very appreciated and loved by so many of his patients including me.
Providence Patient
Since becoming a patient my numbers have improved dramatically.
Providence Patient
Always very attentive and answers all questions and genuinely cares for patients as a whole not just in his specialty
Providence Patient
Great experience
Providence Patient
Dr. Jason Lin is very professional and understanding. I am glad I am his patient as he does understand me properly. He is very kind Doctor .
Providence Patient
Dr Ling is the best! He really listens and cares about his patients.
Providence Patient
You are doing an awesome job. This is the best medical facility ever! The doctors are knowledgeable, respectful, professional, and every other positive adjective we could come up with.Thank you!
Providence Patient
I've been seeing Dr. Ling for a while and I would recommend him to my closest friends. He and his staff have provided nothing short of a family type experience where you know the individual looking over. You actually cares for you and your health. They are the best healthcare Professionals Anyone can ask for.
Providence Patient
Dr. Ling is an exceptional endocrinologist that provides the care I need.
Providence Patient
I recommended my husband to Dr Ling. I think that sums it up!
Providence Patient
Dr. Ling is always professional and approachable. I appreciate that he does not rush the visit or make me feel like I'm a burden with my questions or concerns. His staff has always been amazing.
Providence Patient
Dr. Ling is such a Good Dr. I recommanded to my daughter to see him As well. We are both very happy with him
Providence Patient
Acceptable
Providence Patient
The fact that I only see the doctor once a year and the request for labs was totally inaccurate. I'm not very happy.
Providence Patient
I felt he was in a hurry..he seemed annoyed..
Providence Patient
Dr Ling and staff are always welcoming, respectful and open about my needs. Very thoughtful.
Providence Patient
Dr Ling is always knowledgeable and very caring. I appreciate his attention to me as his patient. I trust that he is giving me the best care possible.
Providence Patient
Dr.Ling wished me Happy Birthday in the near future. It made me feel very special.
Providence Patient
Dr Ling is an outstanding Dr I am very happy with the Dr Ling He goes to the extreme to see how lam feeling He ordered labs and he went over each ones l asked questions and he explained about each one that was high or elevate it.He is an outstanding Dr. He explains what l need to do to get my cholesterol where it needs to
Providence Patient
He's a wonderful doctor and I had a very positive experience with the supportstaff. It's such a long lead time to get an appointment that it doesn't really make it feasible to get the care you need
Providence Patient
Dr Ling is an excellent provider. It is for me to see him as all blood work and tests are his expertise. Most of my care is about tests and bloodwork so accurate info in this area is extremely important to me
Providence Patient
Dr Ling is kind and very thorough. I have never felt rushed during any of my appointments.
Providence Patient
Provided answers to all questions
Providence Patient
The medications my doctor has prescribed for me are managing my T2D very well!
Providence Patient
Very good
Providence Patient
Responded to all my questions, very knowlegable and professional.
Providence Patient
No problem and appreciate his care
Providence Patient
Very customer service oriented and always a good experience!
Providence Patient
Dr. Lin is a great Dr. He's very thorough and knowledgeable. I'm glad to have him as my Dr.
Providence Patient
Good
Providence Patient
Dr. Ling very knowledgeable and took time to answer my questions. He also gave me information to help with lowering my cholesterol. And recommended device to monitor my sugar for wellness and improving my scores.
Providence Patient
The care that I received with this provider was very good!
Providence Patient
So far, so good.
Providence Patient
Dr Ling paid special attention to my state of mind, because I had recently experienced the passing of my husband.
Providence Patient
Very professional
Providence Patient
Dr. Ling is always very attentive and he asks questions appropriate for my current complaints. He has always given me excellent advice.
Providence Patient
All good, nothing bad
Providence Patient
Dr . Is patient and explain all my issues thoroughly. Not in a rush
Providence Patient
Dr Ling and his staff were very friendly and helpful. Dr ling took the time to explain my past test results, answered my questions and rlgave me recommendations for for care and testing in the future.
Providence Patient
I am so thankful for Dr. Ling. With my health he goes above and beyond and looks at everything. He has ordered tests to see what is going on and he keeps me well informed. His office staff also is very kind and schedules the next appointment right after. I am very thankful for the experience from start to finish.
Providence Patient
Everyone that I came in contact with was very professional
Providence Patient
All is good and hopefully will continue to be.
Providence Patient
Dr. Ling is the best doctor, always on top of my diabetes and seems to really care about my health. Very encouraging and motivates me to do better.
Providence Patient
Nothing to add. As already stated, everything is great with this doctor and staff.
Providence Patient
Dr Ling is an excellent physician and very attentive to your needs.
Providence Patient
Good
Providence Patient
Dr. Ling was thorough, kind, informative and heloful
Providence Patient
Good
Providence Patient
He is willing to answer my questions. I am so comfortable during this appointment.
Providence Patient
Fantastic doctors and staff.
Providence Patient
Dr. Ling continues to be the type of doctor everyone should have. He is so nice and professional. He continues to monitor my progress and I appreciate him. He is very caring and compassionate person. All other doctors should emulate Dr. Ling. Dr. Ling thank you for being such a great human!
Providence Patient
Good
Providence Patient
Extremely careful, detail, patient, polite and knowledgeable physician.
Providence Patient
Dr. Ling and his team have always been courteous and respectful with me. Their willingness to listen to my questions and concerns matters to me and makes me feel confident that the care plan will work for me.
Providence Patient
Dr. Ling is an excellent endocrinologist.
Providence Patient
Dr. Jason Ling is very professional and a good listener. Really feel care for and understood.
Providence Patient
Extremely careful and treated us like taking care of his parents.
Providence Patient
Dr. Ling is the best doctor in the world
Providence Patient
All good. Thank you listening and explaining the treatment plan.
Providence Patient
Dr Ling, has always taken the time to listen to concerns I may have regarding my plan of care. I never feel rushed during my appointment.
Providence Patient
Excellent
Providence Patient
Conditions and Procedures
- Abnormal Cortisol Level Tests
- Abnormal Glucose
- Abnormal Glucose Metabolism
- Addison's Disease
- Adrenal Adenoma
- Adrenal Disorders
- Adrenal Mass Non Malignant
- Adrenal Neoplasm
- Adrenogenital Syndrome
- Androgen Excess
- Androgen Insensitivity
- Calcium Metabolism
- Carcinoid Syndrome
- Congenital Hypothyroidism
- Conn Syndrome
- Cushing Syndrome
- Diabetes Education
- Diabetes Mellitus
- Ectopic Hyperparathyroidism
- Endocrine Disorders
- Feminizing Syndrome
- Fine Needle Aspiration Of Thyroid
- Glucagonoma
- Glucocorticoid Deficiency
- Goiter
- Grave's Disease
- Growth Disorders
- Growth Hormone Abnormalities
- Growth Hormone Deficiency
- Gynecomastia
- Hashimoto Thyroiditis
- Hyperaldosteronism
- Hypercalcemia
- Hypercholesterolemia
- Hyperglycemia
- Hyperglycemic Hyperosmolar Syndrome
- Hyperparathyroidism
- Hyperthyroidism
- Hypocalcemia
- Hypoglycemia
- Hypogonadism
- Hypoparathyroidism
- Hypopituitarism
- Hypothalamic Pituitary Disorder
- Hypothyroidism
- Insulin Pump
- Insulin Resistance
- Insulin Therapy
- Insulinoma
- Metabolic Bone Diseases
- Metabolic Syndrome
- Multiple Endocrine Neoplasia
- Myxedema
- Nodular Goiter
- Non Toxic Goiter
- Osteopenia
- Osteoporosis
- Panhypopituitarism
- Parathyroid Disease
- Parathyroid Hyperplasia
- Pheochromocytoma
- Pituitary Adenoma
- Pituitary Disorders
- Pituitary Tumor
- Primary Hyperparathyroidism
- Pseudohermaphroditism
- Pseudohypoparathyroidism
- Radioiodine Therapy
- Rickets
- Secondary Hyperaldosteronism
- Thyroid Cyst
- Thyroid Disorder
- Thyroid Hormone Resistance
- Thyroid Nodule
- Thyroiditis
- Thyrotoxic Exophthalmos
- Thyrotoxicosis
- Toxic Diffuse Goiter
- Toxic Nodular Goiter
- Type 1 Diabetes
- Type 2 Diabetes
- Uremic Hyperparathyroidism
- Virtual Care
- Vitamin Deficiency
Ling answered questions regarding my wife's DEXCOM reading which fluctuates radically at times
Providence Patient