DR. DENNIS MICHAEL CHANG (O.D.) – Optometrist, NPI 1568687630
Optometrist
Main info
Profile Insights
NPPES metrics only — not quality of care.
Provider Addresses for DR. DENNIS MICHAEL CHANG (O.D.)
601 E EXPRESSWAY 83 STE 100B
WESLACO, TX 785994978
Phone: (956) 969-2816
Fax: (956) 968-6956
Type: Location
401 E NEWPORT LN
MCALLEN, TX 785011144
Phone: (956) 682-4747
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 12 Open Payments records for all available years, with a total value of $672.
Total Amount is formed as General ($672) + Research ($0) + Ownership ($0) = $672.
Last reported payment date: 2024-10-09 • Largest payer in this snapshot: Alcon Vision LLC ($549).
Total Amount
$672
General + Research + Ownership
Payments
12
Total payment records
General Amount
$672
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-10-09
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Alcon Vision LLC | $549 |
| Amgen Inc. | $86 |
| Dompe US, Inc. | $37 |
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: 2011-05-12
PECOS data refreshed: 2026-05-27
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 |
|---|---|---|---|---|
| I20110512000494 | I | Optometry | TX | 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 78599)
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