James Wu, MD
NPI 1548404494 · Family Medicine Physician · Petaluma, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Wu, MD is a Family Medicine Physician provider in Petaluma, CA (NPI 1548404494).
Provider details
- NPI number
- 1548404494
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A113791 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
17 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
96 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 43 | $16 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 27 | $178 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 26 | $81 |
Typical Medicare-allowed amounts for these services range $16–$178 (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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 88 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 176 | 51 |
| Gabapentin | 122 | 34 |
| Amlodipine Besylate | 105 | 31 |
| Empagliflozinbrand: Jardiance | 97 | 17 |
| Losartan Potassium | 88 | 27 |
| Famotidine | 80 | 23 |
| Lisinopril |
Practice location
Mailing address
Additional practice locations (2)
- 3569 Round Barn CirSanta Rosa, CA 95403Phone: (707) 303-3600Fax: (707) 303-3611
- 3883 Airway DrSanta Rosa, CA 95403-1670Phone: (707) 583-8748
Registry dates
- Enumerated
- 2009-04-22
- Last updated
- 2025-08-11
- Certified
- 2025-08-11
Frequently asked questions
- What is James Wu's NPI number?
- James Wu's National Provider Identifier (NPI) is 1548404494, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Wu's specialty?
- James Wu is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is James Wu located?
- James Wu's practice location on file with NPPES is 1179 N Mcdowell Blvd, Petaluma, CA 94954-6559.
- What is James Wu's phone number?
- The practice phone number listed in the NPPES registry for James Wu is (707) 559-7500.
- Does James Wu accept Medicare?
- James Wu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Wu's NPI active?
- Yes — James Wu's NPI (1548404494) is active in the NPPES registry as of the last update on 2025-08-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.