Siyi Zhang, OD
Optometrist · Newport Beach, CA
Siyi Zhang, OD is an optometrist with a practice address in Newport Beach, California, and NPI 1679251102, issued on Jul 5, 2023. Check the license (California OPT35548-TLG, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Siyi Zhang
- Credential
- OD
- Primary taxonomy
- Optometrist 152W00000X
- License number
- OPT35548-TLG CA
Self-reported in NPPES; status is on the state search - Practice location
- 4220 Von Karman Ave Ste 100, Newport Beach, CA 92660
- Phone
- (949) 854-7400
- Enumerated
- Jul 5, 2023
- Record last updated
- Mar 24, 2024
- Fax
- (498) 547-3319
- Medicare enrollment
- Enrolled (PECOS I20230918003924); accepts Medicare assignment
- Medical or professional school
- Southern California College Of Optometry, 2023
- Entity
- Type 1 · individual
8 nearest optometrist records → All 8,308 in California → Look up another NPI →
Also registered at 4220 Von Karman Ave Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Thuy Hua Jung, O.D.Optometrist1871615328
- Lisa Van, ODOptometrist1689170664
Verify Siyi Zhang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license OPT35548-TLGCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average optometrist in 2024
34 Medicare Part D claims for 25 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 44% of 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: $982.69
36 payments; by number, the most common kind was food and beverage; the largest payer was Tarsus Pharmaceuticals, Inc. The 34,453 providers of this specialty with any payment received $769.99 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.
Bills Medicare through one group practice
- Thomas S Tooma M D A Professional CorporationNewport Beach, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Siyi Zhang among 8,308 optometrist records in California
Siyi Zhang, OD is one of 8,308 optometrist records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2023, is newer than 92% of them.
- NPI issued2023 · 92% of these records are older, 6% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 43% of these records are
- Graduated2023 · median 2008 among the 3,573 with a school on file
- Record last updated2024 · 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 152W00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Optometrist providers in California
There are 8,308 optometrist records in California.
All 8,308 in California → Every provider in Newport Beach → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Hawaa Ali, O.D.Newport Beach, CA 926601194955849
- Carla Barnett, O.D.Newport Beach, CA 926601902922636
- Lillian Bertram, O.D.Newport Beach, CA 926601881787836
- Cindy Blancq, O.D.Newport Beach, CA 926601831283472
- Michael Bold, ODNewport Beach, CA 926601346349909
- Matthew Brown, O.D.Newport Beach, CA 926601023238961
- Tamara Gee, ODNewport Beach, CA 926601700105582
- Samaneh Hashemian, O.D.Newport Beach, CA 926601801142245
Common questions
What is Siyi Zhang, OD's NPI number?
Siyi Zhang, OD's National Provider Identifier (NPI) is 1679251102, issued on Jul 5, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Siyi Zhang, OD located?
The NPPES record lists a practice address at 4220 Von Karman Ave Ste 100, Newport Beach, CA, 92660. Phone: (949) 854-7400. Providers update this record themselves, so call before visiting.
How can I verify Siyi Zhang, OD's license?
NPPES lists California license number OPT35548-TLG, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Siyi Zhang, OD prescribe under Medicare Part D?
In 2024, Siyi Zhang, OD had 34 Medicare Part D claims for 25 beneficiaries; the average among optometrist prescribers was 277. 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.