Lydia Hsu, M.D.
Ophthalmology Physician · Palo Alto, CA
Lydia Hsu, M.D. is an ophthalmology physician with a practice address in Palo Alto, California, and NPI 1356554679, issued on May 7, 2007. Check the license (California A108514, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Lydia Hsu
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- A108514 CA
Self-reported in NPPES; status is on the state search - Practice location
- 900 Blake Wilbur Dr, Palo Alto, CA 94304
- Phone
- (650) 725-5743
- Enumerated
- May 7, 2007
- Entity
- Type 1 · individual
Also registered at 900 Blake Wilbur Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Steven Binder, O.D.Optometrist1225172182
- Andrew Birkeland, M.D.Pediatric Otolaryngology Physician1700149317
- Eugene Carragee, M.D.Orthopaedic Surgery of the Spine Physician1881740355
- Joshua CarterRegistered Nurse1477419000
- Matthew Chang, M.D.Internal Medicine Physician1598949521
- Hyeun Sook Chon, NPAdult Health Nurse Practitioner1598217267
Verify Lydia Hsu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A108514Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
2.1 times the Medicare Part D claims of the average ophthalmology physician in 2024
3,196 Medicare Part D claims for 597 beneficiaries, against an average of 1,490 among the 16,109 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims.
Most prescribed
- Latanoprost774 claims
- Dorzolamide-Timolol521 claims
- Brimonidine Tartrate305 claims
- Timolol Maleate272 claims
- Prednisolone Acetate259 claims
- Polymyxin B Sul-Trimethoprim112 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: $61.18
2 payments, mostly food and beverage; the largest payer was Alcon Vision LLC. The 12,922 providers of this specialty with any payment received $4,937.17 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.
One hospital or facility affiliation
- Permanente Medical Group IncRedwood City, CA
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Ophthalmology Physician providers in California
There are 2,888 ophthalmology physician records in California.
Other ophthalmology physician records in California
- Sam Abbassi, MD, MSWest Hills, CA1881937720
- Richard Abbott, M.D.San Francisco, CA1346276573
- Nizar Abdelfattah, MDPasadena, CA1801359393
- Parastou Abedi, MDAliso Viejo, CA1720067333
- Shahla Abedi, MDAliso Viejo, CA1467431072
- Lilit Ablabutyan, M.D.Glendale, CA1497013064
- Thomas Ableman, M.D.San Diego, CA1558415067
- Nathan Abraham, M.D.Valencia, CA1306224456
- James Abrams, M.D.San Bruno, CA1912903329
- Adam Abroms, MDWestlake Village, CA1497743702
Common questions
What is Lydia Hsu, M.D.'s NPI number?
Lydia Hsu, M.D.'s National Provider Identifier (NPI) is 1356554679, issued on May 7, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Lydia Hsu, M.D. located?
The NPPES record lists a practice address at 900 Blake Wilbur Dr, Palo Alto, CA, 94304. Phone: (650) 725-5743. Providers update this record themselves, so call before visiting.
How can I verify Lydia Hsu, M.D.'s license?
NPPES lists California license number A108514, 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 Lydia Hsu, M.D. prescribe under Medicare Part D?
In 2024, Lydia Hsu, M.D. had 3,196 Medicare Part D claims for 597 beneficiaries; the average among ophthalmology physician prescribers was 1,490. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.