DR. JOSEPH JUYO CHEN (M.D.) – Ophthalmology Physician, NPI 1639496953
Ophthalmology Physician
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Profile Insights
NPPES metrics only — not quality of care.
2,668 OPHTHALMOLOGY in CA
Provider Addresses for DR. JOSEPH JUYO CHEN (M.D.)
4353 PARK TERRACE DR STE 150
WESTLAKE VILLAGE, CA 913614639
Phone: (805) 987-5300
Type: Mailing
3085 LOMA VISTA RD
VENTURA, CA 930032916
Phone: (805) 583-3950
Fax: (805) 584-2477
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 128 Open Payments records for all available years, with a total value of $4,423.
Total Amount is formed as General ($4,423) + Research ($0) + Ownership ($0) = $4,423.
Last reported payment date: 2024-12-26 • Largest payer in this snapshot: Glaukos Corporation ($779).
Total Amount
$4,423
General + Research + Ownership
Payments
128
Total payment records
General Amount
$4,423
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-26
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Glaukos Corporation | $779 |
| ABBVIE INC. | $677 |
| Sight Sciences, Inc. | $676 |
| Alcon Vision LLC | $640 |
| Bausch & Lomb Americas Inc. | $379 |
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: 2014-09-10
PECOS data refreshed: 2026-06-15
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
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 |
|---|---|---|---|---|
| I20140910002491 | I | Ophthalmology | CA | 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.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 870 | 432 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 505 | 378 | $0 |
| 92136 | Measurement of corneal curvature and depth of eye | 348 | 265 | $0 |
| 92083 | Exam of visual field with extended testing | 314 | 239 | $0 |
| 92133 | Imaging of optic nerve | 264 | 255 | $0 |
Insurance plans in this area (ZIP 91361)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| OPHTHALMOLOGY | CA | 92134 | Diagnostic imaging of retina | 22 | 20 |
| OPHTHALMOLOGY | CA | 92012 | Eye and medical examination for diagnosis and treatment, established patient | 713 | 346 |
| OPHTHALMOLOGY | CA | 92083 | Measurement of field of vision during daylight conditions | 211 | 199 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| 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 T O M E T R Y | FL | |
| 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 T O M E T R Y | CA | |
| O P H T H A L M O L O G Y | KY | |
| O P H T H A L M O L O G Y | CA |
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