James Chang, MD
NPI 1306924105 · Urology Physician · Oakland, CA
Enrolled with Medicare as Practitioner - Urology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Chang, MD is a Urology Physician provider in Oakland, CA (NPI 1306924105).
Provider details
- NPI number
- 1306924105
- Entity type
- Individual
- Primary specialty
- Urology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G80347 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 19 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tamsulosin Hcl | 280 | 105 |
| Finasteride | 235 | 95 |
| Ciprofloxacin Hcl | 75 | 64 |
| Trospium Chloride | 50 | 19 |
| Terazosin Hcl | 47 | 18 |
| Cefadroxil | 40 | 32 |
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro | 40 | 26 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-01
- Last updated
- 2021-12-13
Frequently asked questions
- What is James Chang's NPI number?
- James Chang's National Provider Identifier (NPI) is 1306924105, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Chang's specialty?
- James Chang is listed in the NPPES registry with a primary specialty of Urology Physician (Allopathic & Osteopathic Physicians).
- Where is James Chang located?
- James Chang's practice location on file with NPPES is 275 W Macarthur Blvd, Oakland, CA 94611-5641.
- What is James Chang's phone number?
- The practice phone number listed in the NPPES registry for James Chang is (510) 752-1000.
- Does James Chang accept Medicare?
- James Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Chang's NPI active?
- Yes — James Chang's NPI (1306924105) is active in the NPPES registry as of the last update on 2021-12-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.