William Zhang, MD
NPI 1679034649 · Dermatology Physician · Torrance, CA
Enrolled with Medicare as Practitioner - Dermatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Zhang, MD is a Dermatology Physician provider in Torrance, CA (NPI 1679034649).
Provider details
- NPI number
- 1679034649
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A178954 (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
7 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
2,846 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) |
|---|---|---|
| Destruction of Precancer Skin Growth, 2-14 Growths17003 | 829 | $8 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 423 | $138 |
| Destruction of Precancer Skin Growth, 2-14 Growths17003 | 213 | $2 |
| Destruction of Skin Growth, 1-14 Growths17110 | 208 | $125 |
| Destruction of Precancer Skin Growth, 1 Growth17000 | 201 | $54 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 27 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Triamcinolone Acetonide | 244 | 163 |
| Ketoconazole | 207 | 107 |
| Hydrocortisone | 154 | 97 |
| Clobetasol Propionate | 112 | 64 |
| Fluocinonide | 105 | 67 |
| Clotrimazole | 82 | 41 |
| Mupirocin | 78 | 53 |
| Ciclopirox | 52 | 31 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$150 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
- 2019-03-30
- Last updated
- 2023-10-02
- Certified
- 2023-10-02
Frequently asked questions
- What is William Zhang's NPI number?
- William Zhang's National Provider Identifier (NPI) is 1679034649, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Zhang's specialty?
- William Zhang is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is William Zhang located?
- William Zhang's practice location on file with NPPES is 2780 Skypark Dr Ste 110, Torrance, CA 90505-7528.
- What is William Zhang's phone number?
- The practice phone number listed in the NPPES registry for William Zhang is (310) 265-8422.
- Does William Zhang accept Medicare?
- William Zhang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Zhang's NPI active?
- Yes — William Zhang's NPI (1679034649) is active in the NPPES registry as of the last update on 2023-10-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.