Joseph K W Hsu, MD
Ophthalmology Physician · Downey, CA
Joseph K W Hsu, MD is an ophthalmology physician with a practice address in Downey, California, and NPI 1760584270, issued on Sep 4, 2006. Check the license (California A65768, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Joseph K W Hsu
- Credential
- MD
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- A65768 CA
Self-reported in NPPES; status is on the state search - Practice location
- 8333 Iowa St, Downey, CA 90241
- Phone
- (562) 861-7291
- Enumerated
- Sep 4, 2006
- Record last updated
- Jan 14, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (562) 923-4617
- Medicare enrollment
- Enrolled (PECOS I20120417000537); accepts Medicare assignment
- Medical or professional school
- Georgetown University School Of Medicine, 1991
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 2,899 in California → Look up another NPI →
Verify Joseph K W Hsu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A65768Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.0 times the Medicare Part D claims of the average ophthalmology physician in 2024
3,059 Medicare Part D claims for 422 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
- Latanoprost1,025 claims
- Brimonidine Tartrate278 claims
- Ketorolac Tromethamine252 claims
- Ofloxacin235 claims
- Dorzolamide-Timolol181 claims
- Prednisolone Acetate169 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: $650.24
13 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie 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.
Joseph K W Hsu among 2,899 ophthalmology physician records in California
Joseph K W Hsu, MD 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 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 45% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1991 · median 2001 among the 1,907 with a school on file
- Record last updated2009 · 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).
Ophthalmology Physician providers in California
There are 2,899 ophthalmology physician records in California.
All 2,899 in California → Every provider in Downey → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Brian Brown, M.D.Downey, CA 902411992748479
- Thomas Choi, M.D.Downey, CA 902411477555985
- Marc Segall, M.D.Downey, CA 902411326151531
- Annie Lim, MDDowney, CA 902421639377310
- Amy McCluskey, MDDowney, CA 902421598813305
- Quoc-Tuan Ngo, MDDowney, CA 902421437787645
- Mehrdad Aghai, M.D.Gardena, CA 902471841302577
- Amarpreet BrarGardena, CA 902471356361109
Common questions
What is Joseph K W Hsu, MD's NPI number?
Joseph K W Hsu, MD's National Provider Identifier (NPI) is 1760584270, issued on Sep 4, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Joseph K W Hsu, MD located?
The NPPES record lists a practice address at 8333 Iowa St, Downey, CA, 90241. Phone: (562) 861-7291. Providers update this record themselves, so call before visiting.
How can I verify Joseph K W Hsu, MD's license?
NPPES lists California license number A65768, 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 Joseph K W Hsu, MD prescribe under Medicare Part D?
In 2024, Joseph K W Hsu, MD had 3,059 Medicare Part D claims for 422 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.