WEI AN (M.D.) – Allergy & Immunology Physician, NPI 1942576947
Allergy & Immunology Physician
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Profile Insights
NPPES metrics only — not quality of care.
71 ALLERGY/IMMUNOLOGY in CT
Provider Addresses for WEI AN (M.D.)
836 FARMINGTON AVE STE 207
WEST HARTFORD, CT 061191544
Phone: (860) 232-9911
Type: Location
9200 W Wisconsin Ave
Milwaukee, WI 532263522
Phone: (414) 805-0532
Type: Location
100 Grand St
New Britain, CT 060522016
Phone: (860) 224-5011
Type: Location
282 Washington St
Hartford, CT 061063322
Phone: (860) 545-9000
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 76 Open Payments records for all available years, with a total value of $1,654.
Total Amount is formed as General ($1,654) + Research ($0) + Ownership ($0) = $1,654.
Last reported payment date: 2024-12-18 • Largest payer in this snapshot: GlaxoSmithKline, LLC. ($439).
Total Amount
$1,654
General + Research + Ownership
Payments
76
Total payment records
General Amount
$1,654
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 |
|---|---|
| GlaxoSmithKline, LLC. | $439 |
| AstraZeneca Pharmaceuticals LP | $438 |
| LEO Pharma Inc. | $271 |
| GENZYME CORPORATION | $145 |
| Takeda Pharmaceuticals U.S.A., Inc. | $90 |
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: 2017-06-28
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 |
|---|---|---|---|---|
| I20170628000476 | I | Allergy/Immunology | CT | 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 |
|---|---|---|---|---|
| 95004 | Test for allergy using allergenic extract | 2,722 | 65 | $0 |
| 95165 | Professional service for preparation and provision of 1 or more antigens | 203 | 11 | $0 |
| 95115 | Professional service for single injection of allergen | 134 | 12 | $0 |
| 95018 | Test for allergy using combination of methods with drug or biological | 107 | 11 | $0 |
| 95117 | Professional service for multiple injections of allergen | 105 | 14 | $0 |
Insurance plans in this area (ZIP 06119)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Physician Assistant | MA | |
| Pediatric Medicine, Allergy/Immunology | CT | |
| A L L E R G Y/ I M M U N O L O G Y | CT | |
| Allergy/Immunology, Internal Medicine | CT | |
| Physician Assistant | CT | |
| Physician Assistant | CT | |
| Allergy/Immunology, Internal Medicine | CT | |
| - | CT |
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