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Doctors & clinics in Diamond Bar, CA

81 doctors & clinics listed in Diamond Bar, California. 66 with a phone number and 70 with a website.

Diamond Bar accounts for 0% of the doctors & clinics listed in California and ranks #203 among California cities for doctors & clinics.

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Quick answer

Diamond Bar, CA has 81 doctors & clinics listed on USA Business Search. 66 list a phone number and 70 list a website. The most listings are in ZIP codes 91765, 91789.

Updated October 2026
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American Fertility Medical Center Corporation

1370 Valley Vista Dr Ste 135, Diamond Bar, CA 91765 · Claim or fix

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St. Jude Heritage Pediatrics – Diamond Bar

253 S Diamond Bar Blvd, Diamond Bar, CA 91765 · Claim or fix

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How to choose a doctor in Diamond Bar

  • Call your insurance to confirm the provider is in network before your first visit.
  • Ask about telehealth options and how to reach the office after hours.
  • Ask how long it usually takes to get a new-patient appointment.

Check the license: Medical Board of California.

Medical weight loss and GLP-1 care in Diamond Bar: what to ask

  • GLP-1 medicines such as semaglutide and tirzepatide are prescription-only. A licensed prescriber should review your health history and any labs.
  • Ask whether the medication is an FDA-approved brand or a compounded version, and which pharmacy fills it.
  • Ask for the full monthly cost in writing: visits, medication, shipping and follow-up.
  • Ask how side effects are monitored and how often you will check in with a clinician or dietitian.

See the medical weight loss guide for providers by state.

Common questions

How many doctors & clinics are listed in Diamond Bar, California?

USA Business Search shows 81 doctors & clinics in Diamond Bar. 66 list a phone number and 70 list a website.

Which ZIP codes do these listings cover?

They include ZIP codes 91765, 91789.

How do I choose a doctor in Diamond Bar?

Call your insurance to confirm the provider is in network before your first visit. Ask about telehealth options and how to reach the office after hours. Check the license with the Medical Board of California.

How do doctors & clinics in Diamond Bar compare with the rest of California?

Diamond Bar has 0% of the 79,064 doctors & clinics listed in California, which ranks #203 among California cities for this category.

How do I add or fix a listing?

Listings are free. Use Add your business, or the Claim or fix link on any listing.

Do I need a prescription for GLP-1 weight loss in Diamond Bar?

Yes. Semaglutide and tirzepatide are prescription medications, and a licensed provider decides whether they are appropriate for you. Telehealth programs such as Elevation Health (featured) review your intake from home.

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