Xiao Yan Wang, M.D.
NPI 1134515638 · Internal Medicine Physician · Stanford, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Xiao Yan Wang, M.D. is a Internal Medicine Physician provider in Stanford, CA (NPI 1134515638).
Provider details
- NPI number
- 1134515638
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A144661 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
11 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
421 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 268 | $132 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 47 | $194 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 43 | $89 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 36 | $131 |
| Advance Care Planning, First 30 Minutes99497 | 14 | $85 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 13 | $93 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$22 across 1 record (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
Registry dates
- Enumerated
- 2015-04-10
- Last updated
- 2024-04-24
- Certified
- 2024-04-24
Frequently asked questions
- What is Xiao Yan Wang's NPI number?
- Xiao Yan Wang's National Provider Identifier (NPI) is 1134515638, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Xiao Yan Wang's specialty?
- Xiao Yan Wang is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Xiao Yan Wang located?
- Xiao Yan Wang's practice location on file with NPPES is 300 Pasteur Dr, Stanford, CA 94305.
- What is Xiao Yan Wang's phone number?
- The practice phone number listed in the NPPES registry for Xiao Yan Wang is (650) 723-6028.
- Does Xiao Yan Wang accept Medicare?
- Xiao Yan Wang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Xiao Yan Wang's NPI active?
- Yes — Xiao Yan Wang's NPI (1134515638) is active in the NPPES registry as of the last update on 2024-04-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.