Nancy Wu, M.D.
NPI 1609895358 · Anatomic Pathology & Clinical Pathology Physician · Pomona, CA
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nancy Wu, M.D. is a Anatomic Pathology & Clinical Pathology Physician provider in Pomona, CA (NPI 1609895358).
Provider details
- NPI number
- 1609895358
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A02900 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 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
97 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 | 41 | $38 |
| Special Stained Specimen Slides to Examine Tissue Including Interpretation and Report88313 | 36 | $12 |
| Special Stained Specimen Slides to Identify Organisms Including Interpretation and Report88312 | 20 | $27 |
Typical Medicare-allowed amounts for these services range $12–$38 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$19 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
- 2006-07-19
- Last updated
- 2009-03-31
Frequently asked questions
- What is Nancy Wu's NPI number?
- Nancy Wu's National Provider Identifier (NPI) is 1609895358, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nancy Wu's specialty?
- Nancy Wu is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Nancy Wu located?
- Nancy Wu's practice location on file with NPPES is 1798 N Garey Ave, Pomona, CA 91767-2918.
- What is Nancy Wu's phone number?
- The practice phone number listed in the NPPES registry for Nancy Wu is (949) 643-3345.
- Does Nancy Wu accept Medicare?
- Nancy Wu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nancy Wu's NPI active?
- Yes — Nancy Wu's NPI (1609895358) is active in the NPPES registry as of the last update on 2009-03-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.