XIAO CHLOE WAN (MD) – Allergy & Immunology Physician, NPI 1295099042
Allergy & Immunology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
521 ALLERGY/IMMUNOLOGY in CA
Provider Addresses for XIAO CHLOE WAN (MD)
4050 Moorpark Ave
San Jose, CA 951171840
Phone: (408) 243-2700
Type: Location
4050 MOORPARK AVE
SAN JOSE, CA 951171840
Phone: (408) 243-2700
Type: Location
1300 CRANE ST
MENLO PARK, CA 940254260
Phone: (650) 498-6500
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 9 Open Payments records for all available years, with a total value of $351.
Total Amount is formed as General ($351) + Research ($0) + Ownership ($0) = $351.
Last reported payment date: 2024-09-18 • Largest payer in this snapshot: AstraZeneca Pharmaceuticals LP ($125).
Total Amount
$351
General + Research + Ownership
Payments
9
Total payment records
General Amount
$351
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-09-18
Latest reported date
Top Companies
Largest payers in this snapshot
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: 2017-08-15
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 |
|---|---|---|---|---|
| I20170815003999 | I | Allergy/Immunology | 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 |
|---|---|---|---|---|
| 95004 | Test for allergy using allergenic extract | 2,400 | 51 | $0 |
| J2357 | Injection, omalizumab, 5 mg | 2,010 | 13 | $0 |
| 95165 | Professional service for preparation and provision of 1 or more antigens | 455 | 16 | $0 |
| 95117 | Professional service for multiple injections of allergen | 184 | 12 | $0 |
| 95024 | Test for allergy using allergenic extract injected into skin | 176 | 23 | $0 |
Insurance plans in this area (ZIP 95117)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | CA | |
| - | CA | |
| - | CA | |
| E N D O C R I N O L O G Y | CA | |
| O B S T E T R I C S/ G Y N E C O L O G Y | CA | |
| - | CA | |
| O B S T E T R I C S/ G Y N E C O L O G Y | CA | |
| - | CA | |
| O B S T E T R I C S/ G Y N E C O L O G Y | CA | |
| - | CA |
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