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Sandra Mathur, DO
Practice accepting new patients.

Sandra Mathur, DO

(909) 860-1144
Primary Specialties
  • Pediatrics
    (Board Certified)
Medical Groups & Affiliations
  • St. Jude Heritage Medical Group
  • Additional Languages Spoken

Primary Office

St. Jude Heritage Diamond Bar - Primary Care
1514 Valley Vista Drive
Diamond Bar, CA 91765
(909) 860-1144
(909) 860-8307
Web Page:
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4.9 out of 5 (102 Ratings | 27 Comments)


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dr. Mather is absolutely by far the best doctor my son is ever had !! She is fantastic!!
Our family loves *Dr. Mathur. She is kind, caring, patient, and very loving. She treats us as if we are the patients in the office and yet she never keeps up waiting and is always quick to figure out what is wrong.
Dr Mathur is amazing. She is very knowledgeable and always makes me feel at ease. She always goes above and beyond to show she cares. And we love her personality; she's not dull and impersonal like a lot of doctors are.
love this doctor
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Physician Bio

Parents quickly realize that I am passionate about what I do: being a pediatrician has been my dream since I was 3 years old. I am completely committed to each child’s health and well-being, and care for my patients as if they were my own. If there is a problem, I will do everything in my power to fix it.

I believe that being a mom of three children, ages 6, 11 and 15, helps make me a better pediatrician. I understand the concerns, fears and pressures that parents face. What seems like a small issue to others, can seem exponentially bigger in a parent’s eyes: education and reassurance can sometimes be as important as a prescription. Although clinical skills are essential, the ability to listen carefully is often almost as vital. I love getting to know my patients and their families so that we have a strong relationship based on trust.

I’m a huge fan of thinking outside the box and teaching kids not only the importance of nutrition and exercise, but helping girls grow up with confidence and helping boys grow up to be gentlemen. I am not a fan of constantly pushing kids to reach developmental milestones early—sometimes we need to remember to let children just be children.

As a doctor, one of the best moments is when a new patient says they’ve chosen you to be their child’s pediatrician because they’ve heard that you really care.

There is nothing more important to me than the health and safety of your children. As a strong advocate of vaccinations, I believe that ensuring the children who visit our office are fully vaccinated is the single most important thing I can do to keep your children and your community safe. If you choose not to fully vaccinate your child, another physician may be a better fit for your family. If you have questions or would like more information on vaccinations, call our office at (909) 860-1144.


  • Medical School:
    Western University of Health Sciences
  • Internship:
    Children's Hospital
  • Residency:
    Children's Hospital
  • Board Certified in Pediatrics

Areas of Interest

Circumcision - Infant, Constipation, Newborn Care, Nutrition, General Child, Bronchitis

Insurance ID Numbers

Aetna: *385088
Blue Cross: *0RD120
Blue Shield: 020A69050
CIGNA: 7089118005
CIGNA Select: 7089118009
Health Net: 3205072488
Health Net Senior: n/a
SCAN: n/a
United Healthcare: *0183420099

*Provider ID is the same for both HMO and Medicare Advantage Plans

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