EUGENE Y CHANG (MD) – Retina Specialist (Ophthalmology) Physician, NPI 1265432991
Retina Specialist (Ophthalmology) Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
2,665 OPHTHALMOLOGY in CA
Provider Addresses for EUGENE Y CHANG (MD)
1518, East Barnett Road, Medford, Jackson County, Oregon, 97504, United States
MEDFORD, OR 975048281
Phone: (541) 770-2020
Fax: (541) 200-2599
Type: Mailing
2619 E COLORADO BLVD STE 150
PASADENA, CA 911073747
Phone: (626) 793-4168
Fax: (626) 793-6256
Type: Location
14726 RAMONA AVE STE 203
CHINO, CA 917105730
Phone: (626) 305-9100
Fax: (626) 305-0152
Type: Mailing
1900 W GARVEY AVE S UNIT 335
WEST COVINA, CA 917902656
Phone: (626) 305-9100
Fax: (626) 305-9150
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 37 Open Payments records for all available years, with a total value of $4,991.
Total Amount is formed as General ($4,991) + Research ($0) + Ownership ($0) = $4,991.
Last reported payment date: 2024-12-11 • Largest payer in this snapshot: Alcon Vision LLC ($2,877).
Total Amount
$4,991
General + Research + Ownership
Payments
37
Total payment records
General Amount
$4,991
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-11
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Alcon Vision LLC | $2,877 |
| Bausch & Lomb Americas Inc. | $383 |
| Regeneron Healthcare Solutions, Inc. | $284 |
| SUN PHARMACEUTICAL INDUSTRIES INC. | $277 |
| Alimera Sciences, Inc. | $174 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2018-05-30
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20070215000642 | I | Ophthalmology | CA | TBD |
| I20180530003024 | I | Ophthalmology | OR | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 97504)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| OPHTHALMOLOGY | CA | 92012 | Eye and medical examination for diagnosis and treatment, established patient | 110 | 61 |
| OPHTHALMOLOGY | CA | 92083 | Measurement of field of vision during daylight conditions | 12 | 12 |
| OPHTHALMOLOGY | CA | 92134 | Diagnostic imaging of retina | 1564 | 511 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| O P H T H A L M O L O G Y | NV | |
| O P H T H A L M O L O G Y | CA | |
| O P T O M E T R Y | CA | |
| O P H T H A L M O L O G Y | CA | |
| O P H T H A L M O L O G Y | CA | |
| O P H T H A L M O L O G Y | CA | |
| O P H T H A L M O L O G Y | MD | |
| O P H T H A L M O L O G Y | CA | |
| O P T O M E T R Y | CA | |
| O P T O M E T R Y | CA |
Reviews
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