Xiao Wan, MD
NPI 1295099042 · Allergy & Immunology Physician · Menlo Park, CA
Enrolled with Medicare as Practitioner - Allergy/Immunology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Xiao Wan, MD is a Allergy & Immunology Physician provider in Menlo Park, CA (NPI 1295099042).
Provider details
- NPI number
- 1295099042
- Entity type
- Individual
- Primary specialty
- Allergy & Immunology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A135680 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
14 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
3,446 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Test for Allergy Using Allergenic Extract95004 | 2,222 | $5 |
| Professional Service for Preparation and Provision of 1 Or More Antigens95165 | 455 | $19 |
| Professional Service for Multiple Injections of Allergen95117 | 186 | $17 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 126 | $18 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 104 | $153 |
| Test for Allergy Using Allergenic Extract Injected Into Skin95024 | 92 | $11 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Montelukast Sodium | 55 | 28 |
| Azelastine Hcl | 49 | 28 |
| Fluticasone/Umeclidin/Vilanterbrand: Trelegy Ellipta | 43 | 11 |
| Ipratropium Bromide | 37 | 11 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 30 | 18 |
| Fluticasone Propion/Salmeterolbrand: Wixela Inhub | 28 | — |
| Dupilumab |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$307 across 6 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 4050 Moorpark AveSan Jose, CA 95117-1840Phone: (408) 243-2700
Registry dates
- Enumerated
- 2012-06-26
- Last updated
- 2024-04-12
- Certified
- 2024-04-12
Frequently asked questions
- What is Xiao Wan's NPI number?
- Xiao Wan's National Provider Identifier (NPI) is 1295099042, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Xiao Wan's specialty?
- Xiao Wan is listed in the NPPES registry with a primary specialty of Allergy & Immunology Physician (Allopathic & Osteopathic Physicians).
- Where is Xiao Wan located?
- Xiao Wan's practice location on file with NPPES is 1300 Crane St, Menlo Park, CA 94025-4260.
- What is Xiao Wan's phone number?
- The practice phone number listed in the NPPES registry for Xiao Wan is (650) 498-6500.
- Does Xiao Wan accept Medicare?
- Xiao Wan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Xiao Wan's NPI active?
- Yes — Xiao Wan's NPI (1295099042) is active in the NPPES registry as of the last update on 2024-04-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.