Diana Chao, MD
Ophthalmology Physician · San Gabriel, CA
Diana Chao, MD is an ophthalmology physician with a practice address in San Gabriel, California, and NPI 1528320298, issued on Jun 8, 2012. Check the license (California A135726, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Diana Chao
- Credential
- MD
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- A135726 CA
Self-reported in NPPES; status is on the state search - Practice location
- 7232 Rosemead Blvd Ste 202, San Gabriel, CA 91775
- Phone
- (626) 534-6698
- Enumerated
- Jun 8, 2012
- Record last updated
- Jan 19, 2026
- Entity
- Type 1 · individual
Verify Diana Chao in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A135726Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.3 times the Medicare Part D claims of the average ophthalmology physician in 2024
3,545 Medicare Part D claims for 460 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 39% of claims.
Most prescribed
- Latanoprost1,116 claims
- Brimonidine Tartrate542 claims
- Dorzolamide-Timolol478 claims
- Prednisolone Acetate193 claims
- Timolol Maleate178 claims
- Rocklatan108 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $352.91
11 payments; by number, the most common kind was food and beverage; the largest payer was Sight Sciences, Inc. The 13,221 providers of this specialty with any payment received $4,535.02 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
8 ophthalmology physician records list a practice address in San Gabriel
They are 8 of the 762 NPPES records with a practice address in San Gabriel, and 2,899 ophthalmology physician records in California.
All 8 in San Gabriel → All 2,899 in California → Every provider in San Gabriel →
Other ophthalmology physician records in California
- Sam Abbassi, MD, MSWest Hills, CA1881937720
- Richard Abbott, M.D.San Francisco, CA1346276573
- Jean-Paul Abboud, M.D., PH.D.Del Mar, CA1760776728
- Nizar Abdelfattah, MDPasadena, CA1801359393
- Parastou Abedi, MDAliso Viejo, CA1720067333
- Shahla Abedi, MDAliso Viejo, CA1467431072
- Lilit Ablabutyan, M.D.Glendale, CA1497013064
- Nathan Abraham, M.D.Valencia, CA1306224456
- James Abrams, M.D.San Bruno, CA1912903329
- Adam Abroms, MDWestlake Village, CA1497743702
Common questions
What is Diana Chao, MD's NPI number?
Diana Chao, MD's National Provider Identifier (NPI) is 1528320298, issued on Jun 8, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Diana Chao, MD located?
The NPPES record lists a practice address at 7232 Rosemead Blvd Ste 202, San Gabriel, CA, 91775. Phone: (626) 534-6698. Providers update this record themselves, so call before visiting.
How can I verify Diana Chao, MD's license?
NPPES lists California license number A135726, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Diana Chao, MD prescribe under Medicare Part D?
In 2024, Diana Chao, MD had 3,545 Medicare Part D claims for 460 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.