DR. WAN-YIN CHAN (M.D.) – Allergy & Immunology Physician, NPI 1932391471
Allergy & Immunology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
2,386 PEDIATRIC MEDICINE in CA
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Provider Addresses for DR. WAN-YIN CHAN (M.D.)
100, West La Veta Avenue, Orange, Orange County, California, 92866, United States
ORANGE, CA 928684445
Phone: (714) 633-6363
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 135 Open Payments records for all available years, with a total value of $7,280.
Total Amount is formed as General ($7,280) + Research ($0) + Ownership ($0) = $7,280.
Last reported payment date: 2024-12-18 • Largest payer in this snapshot: CSL Behring ($3,218).
Total Amount
$7,280
General + Research + Ownership
Payments
135
Total payment records
General Amount
$7,280
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-18
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| CSL Behring | $3,218 |
| Takeda Pharmaceuticals U.S.A., Inc. | $1,827 |
| Regeneron Healthcare Solutions, Inc. | $457 |
| GENZYME CORPORATION | $392 |
| AstraZeneca Pharmaceuticals LP | $305 |
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: 2012-11-06
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 |
|---|---|---|---|---|
| I20121106000155 | I | Pediatric Medicine | 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.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 92868)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | CA | |
| Pediatric Medicine, Cardiovascular Disease (Cardiology) | CA | |
| Pediatric Medicine, Cardiovascular Disease (Cardiology) | CA | |
| G A S T R O E N T E R O L O G Y | CA | |
| - | CA | |
| Pediatric Medicine, Medical Genetics And Genomics | CA | |
| Pediatric Medicine, Allergy/Immunology | CA | |
| Pediatric Medicine | CA | |
| Diagnostic Radiology | NJ | |
| Pediatric Medicine, Cardiovascular Disease (Cardiology) | CA |
Reviews
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