Alexander Francis Chen
Ophthalmology Physician · Pasadena, CA
Alexander Francis Chen is an ophthalmology physician with a practice address in Pasadena, California, and NPI 1528594546, issued on May 11, 2017. Check the license (California A171467, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Alexander Francis Chen
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- A171467 CA
Self-reported in NPPES; status is on the state search - Practice location
- 100 E California Blvd, Pasadena, CA 91105
- Phone
- (800) 898-2020
- Enumerated
- May 11, 2017
- Record last updated
- Dec 30, 2024
- Medicare enrollment
- Enrolled (PECOS I20210625001631); accepts Medicare assignment
- Medical or professional school
- University Of Southern California Keck School Of Medicine, 2017
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 2,899 in California → Look up another NPI →
Also registered at 100 E California Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Jessica Boeckmann, M.D.Ophthalmology Physician1629210679
- Tom Chang, MDRetina Specialist (Ophthalmology) Physician1609848969
- Jeffrey Jeong, O.D.Optometrist1184216848
- Renia Malek, ODOptometrist1639688179
Verify Alexander Francis Chen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A171467Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
6.0 times the Medicare Part D claims of the average ophthalmology physician in 2024
9,123 Medicare Part D claims for 1,689 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D.
Most prescribed
- Latanoprost3,103 claims
- Dorzolamide-Timolol1,063 claims
- Brimonidine Tartrate1,039 claims
- Prednisolone Acetate611 claims
- Timolol Maleate531 claims
- Ketorolac Tromethamine400 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: $160.05
4 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.
Bills Medicare through one group practice
- Southern California Permanente Medical GroupGardena, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alexander Francis Chen among 2,899 ophthalmology physician records in California
Alexander Francis Chen 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 2017, is newer than 88% of them.
- NPI issued2017 · 88% of these records are older, 10% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2017 · median 2001 among the 1,907 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 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 Pasadena → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Rizwan Bhatti, M.D.Pasadena, CA 911051588724108
- Gerald Bowns, MDPasadena, CA 911051225000672
- Joseph Davidson, M.D.Pasadena, CA 911051467487926
- Jeffrey Hong, MDPasadena, CA 911051922049055
- Hugo Hsu, MDPasadena, CA 911051336153816
- Michael Ip, MDPasadena, CA 911051982670402
- John Irvine, M.D.Pasadena, CA 911051316009103
- Marta Mora, M.D.Pasadena, CA 911051093766651
Common questions
What is Alexander Francis Chen's NPI number?
Alexander Francis Chen's National Provider Identifier (NPI) is 1528594546, issued on May 11, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Alexander Francis Chen located?
The NPPES record lists a practice address at 100 E California Blvd, Pasadena, CA, 91105. Phone: (800) 898-2020. Providers update this record themselves, so call before visiting.
How can I verify Alexander Francis Chen's license?
NPPES lists California license number A171467, 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 Alexander Francis Chen prescribe under Medicare Part D?
In 2024, Alexander Francis Chen had 9,123 Medicare Part D claims for 1,689 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.