Eugene Y Chang, MD
Ophthalmology (CMS) · Buena Park, CA
At a glance
5832 Beach Blvd Unit 109, Buena Park, CA 90621-5500
Published activity: Cataract surgery. View counts and coverage
NPPES record updated May 29, 2026. Public records can lag behind changes at a practice.
Before you call: a quick checklist
- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.
How to check your coverage
Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.
Check the official Medicare directory ↗Practice location
5832 Beach Blvd Unit 109Buena Park, CA 90621-5500
Additional reported practice locations
71956 Magnesia Falls DrRancho Mirage, CA 922704901
Phone: 7606218896
Fax: 7146761984
Education & affiliations
- Medical / professional school
- Tufts University School Of Medicine
- Graduation year
- 2000
- CMS specialties
- Ophthalmology
Practice groups
- Azul Vision Inc
- Bethel Eye Center Medical Corporation
- California Eye Specialists Medical Group Inc
- Eyecare Medical Corporation
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
| Procedure category | Published Medicare activity |
|---|---|
| Cataract surgery | 1-10 |
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Service-mix comparison is unavailable for this NPI in the imported Medicare service file.
Industry-reported general payments
Includes reported transfers of value, such as meals, travel, or consulting. Payments do not establish improper conduct or quality of care. Research funding and ownership values are excluded from this total.
See payment purposes and reporting companies
Reported purposes
| Purpose | Amount |
|---|---|
| Food and beverage | $1,390.34 |
| Travel and lodging | $896.11 |
Reporting companies
| Company | Amount |
|---|---|
| INTUITIVE SURGICAL, INC. | $896.11 |
| ALCON VISION LLC | $254.87 |
| ASTELLAS PHARMA US INC | $225.43 |
| ANI PHARMACEUTICALS, INC. | $185.15 |
| TARSUS PHARMACEUTICALS, INC. | $153.33 |
| BAUSCH & LOMB AMERICAS INC. | $145.96 |
| ABBVIE INC. | $125.00 |
| OCULAR THERAPEUTIX, INC. | $124.67 |
| Other reporting companies | $175.93 |
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Ophthalmology (CMS)
- Taxonomy code
- 207WX0107X
- Enumeration date
- Jul 22, 2005
- Record updated
- May 29, 2026
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- MD
Reported taxonomies and licenses
207W00000X
License reported: 036111048 IL
207W00000X
License reported: MD183525 OR
207WX0107X · Primary
License reported: A77825 CA
207WX0107X
License reported: MD183525 OR
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
5832 Beach Blvd Unit 109Buena Park, CA 90621-5500
- Phone
- (714) 228-1888
- Fax
- (714) 676-1984
Mailing address
PO BOX 190BUENA PARK, CA 906210190
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
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