Xiaoyan Zhou
NPI 1033537527 · Anatomic Pathology & Clinical Pathology Physician · Lancaster, CA
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Xiaoyan Zhou is a Anatomic Pathology & Clinical Pathology Physician provider in Lancaster, CA (NPI 1033537527).
Provider details
- NPI number
- 1033537527
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- No
- License
- A135282 (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
12 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
2,259 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) |
|---|---|---|
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 709 | $37 |
| Special Stained Specimen Slides to Examine Tissue, Each Additional Procedure88341 | 378 | $27 |
| Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342 | 254 | $34 |
| Pathology Examination of Tissue Using a Microscope, Moderately High Complexity88307 | 154 | $80 |
| Pathology Examination of Tissue Using a Microscope, Moderately Low Complexity88304 | 141 | $11 |
| Special Stained Specimen Slides to Examine Tissue Including Interpretation and Report88313 | 127 | $12 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$125 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
Additional practice locations (1)
- 8459 Westmore RdApt.57San Diego, CA 92126-5370Phone: (408) 334-5997
Registry dates
- Enumerated
- 2014-04-01
- Last updated
- 2022-07-21
Frequently asked questions
- What is Xiaoyan Zhou's NPI number?
- Xiaoyan Zhou's National Provider Identifier (NPI) is 1033537527, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Xiaoyan Zhou's specialty?
- Xiaoyan Zhou is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Xiaoyan Zhou located?
- Xiaoyan Zhou's practice location on file with NPPES is 1600 W Avenue J, Lancaster, CA 93534-2814.
- What is Xiaoyan Zhou's phone number?
- The practice phone number listed in the NPPES registry for Xiaoyan Zhou is (661) 949-5611.
- Does Xiaoyan Zhou accept Medicare?
- Xiaoyan Zhou is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Xiaoyan Zhou's NPI active?
- Yes — Xiaoyan Zhou's NPI (1033537527) is active in the NPPES registry as of the last update on 2022-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.