Hanhsing Wu, MD
NPI 1114034832 · Hematology & Oncology Physician · Mountain View, CA
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Hanhsing Wu, MD is a Hematology & Oncology Physician provider in Mountain View, CA (NPI 1114034832).
Provider details
- NPI number
- 1114034832
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A63128 (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
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
4,607 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) |
|---|---|---|
| Infusion Into a Vein for Therapy, Prevention, Or Diagnosis, 1 Hour Or Less96365 | 585 | $85 |
| Administration of Chemotherapy Into Vein, 1 Hour Or Less96413 | 508 | $177 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 459 | $216 |
| Injection of Additional New Drug Or Substance Into Vein96375 | 456 | $20 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 366 | $19 |
| Infusion Into a Vein for Therapy, Prevention, Or Diagnosis, Each Additional Hour |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 18 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Anastrozole | 213 | 60 |
| Alendronate Sodium | 115 | 34 |
| Letrozole | 73 | 21 |
| Tamoxifen Citrate | 72 | 20 |
| Prednisone | 47 | 18 |
| Prochlorperazine Maleate | 31 | 27 |
| Levothyroxine Sodium | 23 | — |
| Osimertinib Mesylatebrand: Tagrisso |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$31 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
- 2006-08-25
- Last updated
- 2017-02-27
Frequently asked questions
- What is Hanhsing Wu's NPI number?
- Hanhsing Wu's National Provider Identifier (NPI) is 1114034832, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Hanhsing Wu's specialty?
- Hanhsing Wu is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Hanhsing Wu located?
- Hanhsing Wu's practice location on file with NPPES is 701 E El Camino Real, Mountain View, CA 94040-2833.
- What is Hanhsing Wu's phone number?
- The practice phone number listed in the NPPES registry for Hanhsing Wu is (408) 739-6000.
- Does Hanhsing Wu accept Medicare?
- Hanhsing Wu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Hanhsing Wu's NPI active?
- Yes — Hanhsing Wu's NPI (1114034832) is active in the NPPES registry as of the last update on 2017-02-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.