Michelle Tian Sun, MBBS PHD
Ophthalmology Physician · Stanford, CA
Michelle Tian Sun, MBBS PHD is an ophthalmology physician with a practice address in Stanford, California, and NPI 1326716200, issued on Sep 3, 2021. Check the license (California SPI679, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Michelle Tian Sun
- Credential
- MBBS PHD
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License numbers
- SPI679 CA
F679 CA
Self-reported in NPPES; status is on the state search - Practice location
- 300 Pasteur Dr, Stanford, CA 94305
- Phone
- (650) 723-4000
- Enumerated
- Sep 3, 2021
- Record last updated
- Sep 21, 2021 (not updated in 5 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 2,899 in California → Look up another NPI →
Also registered at 300 Pasteur Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Michelle Tian Sun in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license SPI679Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average ophthalmology physician in 2024
127 Medicare Part D claims for 70 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 43% of claims.
Most prescribed
- Latanoprost36 claims
- Dorzolamide-Timolol16 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 76.5 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Michelle Tian Sun among 2,899 ophthalmology physician records in California
Michelle Tian Sun, MBBS PHD is one of 2,899 ophthalmology physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 96% of them.
- NPI issued2021 · 96% of these records are older, 2% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 66% of these records are
- Record last updated2021 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
53 ophthalmology physician records list a practice address in Stanford
They are 53 of the 5,606 NPPES records with a practice address in Stanford, and 2,899 ophthalmology physician records in California.
All 2,899 in California → Every provider in Stanford → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Mark Blumenkranz, M.D.Stanford, CA 943051114085636
- Clement Cheng, MDStanford, CA 943051629065826
- Jason Ehrlich, M.D., PH.D.Stanford, CA 943051447446752
- Ann Fisher, MDStanford, CA 943051861417636
- Henry Kistler, M.D., PH.D.Stanford, CA 943051508992108
- Vinit Mahajan, MD PHDStanford, CA 943051497784300
- Michael Marmor, M.D.Stanford, CA 943051225181662
- Artis Montague, MD, PHDStanford, CA 943051679680086
Common questions
What is Michelle Tian Sun, MBBS PHD's NPI number?
Michelle Tian Sun, MBBS PHD's National Provider Identifier (NPI) is 1326716200, issued on Sep 3, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Michelle Tian Sun, MBBS PHD located?
The NPPES record lists a practice address at 300 Pasteur Dr, Stanford, CA, 94305. Phone: (650) 723-4000. Providers update this record themselves, so call before visiting.
How can I verify Michelle Tian Sun, MBBS PHD's license?
NPPES lists California license number SPI679, 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 Michelle Tian Sun, MBBS PHD prescribe under Medicare Part D?
In 2024, Michelle Tian Sun, MBBS PHD had 127 Medicare Part D claims for 70 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is Michelle Tian Sun, MBBS PHD's MIPS final score?
The 2023 MIPS final score is 76.5 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.