Dr. Alexander F. Chen
Ophthalmology (Ophthalmology Physician)
100 E California Blvd
Pasadena, CA 91105
Who else practices at this address →
Los Angeles County includes primary care (7% of residents) and mental health (13% of residents) shortage areas. About shortage areas
- Medicare participating
At a glance
- Medical school
- University of Southern California Keck School of Medicine (2017)
- Years since graduation
- 9
- In the NPI registry since
- 2017
- Medicare patients seen, 2024
- 206
Licensed in California since 2021, according to the Medical Board of California. We show license dates only for the states that publish them in bulk; see which states do. For other states, check the state medical board.
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. What an NPI is
Education and training
- 2017Medical school: University of Southern California Keck School of Medicine
- 2017Registered with an NPI (national billing number; not a license date)
Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Ophthalmology Physician primary
CA license A171467 (first issued 2021; current)
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Medical groups
- Southern California Permanente Medical Group (11,293 clinicians)
Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.
Medicare patients and services
- Medicare patients, 2024
- 206
- Services billed
- 600
- Patients’ average age
- 72
| Service | Times | Patients |
|---|---|---|
| Established patient office or other outpatient visit, 20-29 minutes | 165 | 125 |
| Imaging of optic nerve | 63 | 58 |
| Exam of visual field with extended testing | 55 | 54 |
| Ultrasound scan of cornea to determine thickness | 55 | 49 |
| Established patient problem focused exam of visual system | 41 | 37 |
| New patient office or other outpatient visit, 30-44 minutes | 24 | 24 |
| Established patient office or other outpatient visit, 10-19 minutes | 23 | 23 |
| Established patient complete exam of visual system | 19 | 19 |
| Measurement of corneal curvature and depth of eye | 14 | 14 |
| New patient complete exam of visual system | 11 | 11 |
Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.
Medicare prescriptions
| Drug | Prescriptions |
|---|---|
| Latanoprost Other prescribers in Pasadena, CA | 3,103 |
| Dorzolamide-Timolol (dorzolamide hcl/timolol maleat) Other prescribers in Pasadena, CA | 1,063 |
| Brimonidine Tartrate Other prescribers in Pasadena, CA | 1,039 |
| Prednisolone Acetate Other prescribers in Pasadena, CA | 611 |
| Timolol Maleate Other prescribers in Pasadena, CA | 531 |
| Ketorolac Tromethamine Other prescribers in Pasadena, CA | 400 |
| Ofloxacin Other prescribers in Pasadena, CA | 386 |
| Lumigan (bimatoprost) Other prescribers in Pasadena, CA | 273 |
| Rhopressa (netarsudil mesylate) | 217 |
| Erythromycin (erythromycin base) Other prescribers in Pasadena, CA | 189 |
Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.
Payments from drug and device companies
In 2025, 1 companies reported 1 payments worth $121 in total to this clinician.
| Regeneron Healthcare Solutions, Inc. | $121 |
|---|
| Food and Beverage | $121 |
|---|
From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.