Xiao Wan, D.O.
NPI 1851616775 · Internal Medicine Physician · Lancaster, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Xiao Wan, D.O. is a Internal Medicine Physician provider in Lancaster, CA (NPI 1851616775).
Provider details
- NPI number
- 1851616775
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 20A11881 (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
16 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
2,079 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 | 677 | $118 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 267 | $173 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 208 | $115 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 123 | $8 |
| Advance Care Planning, First 30 Minutes99497 | 121 | $75 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 154 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 302 | 124 |
| Amlodipine Besylate | 259 | 96 |
| Furosemide | 168 | 78 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 160 | 73 |
| Apixabanbrand: Eliquis | 149 | 55 |
| Levothyroxine Sodium | 141 | 52 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,469 across 17 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)
- 11234 Anderson StGme Office Cp 21005Loma Linda, CA 92354-2804Phone: (909) 558-8131
Registry dates
- Enumerated
- 2010-04-03
- Last updated
- 2024-05-29
- Certified
- 2024-05-29
Frequently asked questions
- What is Xiao Wan's NPI number?
- Xiao Wan's National Provider Identifier (NPI) is 1851616775, 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 Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Xiao Wan located?
- Xiao Wan's practice location on file with NPPES is 1600 W Avenue J, Lancaster, CA 93534-2814.
- What is Xiao Wan's phone number?
- The practice phone number listed in the NPPES registry for Xiao Wan is (626) 688-3568.
- 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 (1851616775) is active in the NPPES registry as of the last update on 2024-05-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.