Joseph Chang, MD
NPI 1558420174 · Urology Physician · Harbor City, CA
Enrolled with Medicare as Practitioner - Urology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joseph Chang, MD is a Urology Physician provider in Harbor City, CA (NPI 1558420174).
Provider details
- NPI number
- 1558420174
- Entity type
- Individual
- Primary specialty
- Urology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A74975 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 · 17 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tamsulosin Hcl | 563 | 213 |
| Finasteride | 269 | 86 |
| Trospium Chloride | 225 | 100 |
| Mirabegronbrand: Myrbetriq | 187 | 84 |
| Methenamine Hippurate | 141 | 70 |
| Tadalafil | 108 | 42 |
| Ciprofloxacin Hcl | 104 | 86 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$246 across 7 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
- 2006-12-08
- Last updated
- 2021-12-02
Frequently asked questions
- What is Joseph Chang's NPI number?
- Joseph Chang's National Provider Identifier (NPI) is 1558420174, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joseph Chang's specialty?
- Joseph Chang is listed in the NPPES registry with a primary specialty of Urology Physician (Allopathic & Osteopathic Physicians).
- Where is Joseph Chang located?
- Joseph Chang's practice location on file with NPPES is 25825 Vermont Ave, Harbor City, CA 90710-3518.
- What is Joseph Chang's phone number?
- The practice phone number listed in the NPPES registry for Joseph Chang is (310) 325-5111.
- Does Joseph Chang accept Medicare?
- Joseph Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joseph Chang's NPI active?
- Yes — Joseph Chang's NPI (1558420174) is active in the NPPES registry as of the last update on 2021-12-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.