David Wu, MD
NPI 1023015484 · Rheumatology Physician · Walnut Creek, CA
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Wu, MD is a Rheumatology Physician provider in Walnut Creek, CA (NPI 1023015484).
Provider details
- NPI number
- 1023015484
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A83347 (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
21 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
2,550 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,070 | $155 |
| 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 | 1,040 | $19 |
| Administration of Chemotherapy Into Vein, 1 Hour Or Less96413 | 153 | $178 |
| Administration of Non-Hormonal Anti-Neoplastic Chemotherapy Under Skin Or Into Muscle96401 | 105 | $98 |
| Administration of Chemotherapy Into Vein, Each Additional Hour96415 | 63 | $36 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 29 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 547 | 122 |
| Methotrexate Sodiumbrand: Methotrexate | 237 | 51 |
| Hydroxychloroquine Sulfate | 216 | 44 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 138 | 29 |
| Allopurinol | 122 | 31 |
| Gabapentin | 86 | 17 |
| Tramadol Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$4,363 across 209 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
Registry dates
- Enumerated
- 2005-06-30
- Last updated
- 2021-10-25
- Certified
- 2021-10-25
Frequently asked questions
- What is David Wu's NPI number?
- David Wu's National Provider Identifier (NPI) is 1023015484, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Wu's specialty?
- David Wu is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is David Wu located?
- David Wu's practice location on file with NPPES is 120 La Casa Via, Walnut Creek, CA 94598-3007.
- What is David Wu's phone number?
- The practice phone number listed in the NPPES registry for David Wu is (925) 210-1050.
- Does David Wu accept Medicare?
- David Wu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Wu's NPI active?
- Yes — David Wu's NPI (1023015484) is active in the NPPES registry as of the last update on 2021-10-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.