Anne Lynn Chang, MD
NPI 1013049188 · Dermatology Physician · Stanford, CA
Enrolled with Medicare as Practitioner - Dermatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Anne Lynn Chang, MD is a Dermatology Physician provider in Stanford, CA (NPI 1013049188).
Provider details
- NPI number
- 1013049188
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A74696 (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
19 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
2,346 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 | 1,147 | $2 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 308 | $111 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 224 | $74 |
| Destruction of Precancer Skin Growth, 1 Growth17000 | 216 | $60 |
| Destruction of Skin Growth, 1-14 Growths17110 | 82 | $84 |
| Punch Biopsy, First Skin Growth |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ketoconazole | 44 | 19 |
| Triamcinolone Acetonide | 39 | 29 |
| Clindamycin Phosphate | 34 | 12 |
| Fluorouracil | 32 | 23 |
| Fluocinonide | 21 | 12 |
| Hydrocortisone | 20 | — |
| Dupilumabbrand: Dupixent Syringe | 17 | — |
| Metronidazole | 17 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,936 across 2 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
- 2007-03-12
- Last updated
- 2024-04-16
- Certified
- 2024-04-16
Frequently asked questions
- What is Anne Lynn Chang's NPI number?
- Anne Lynn Chang's National Provider Identifier (NPI) is 1013049188, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Anne Lynn Chang's specialty?
- Anne Lynn Chang is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Anne Lynn Chang located?
- Anne Lynn Chang's practice location on file with NPPES is 300 Pasteur Dr, Stanford, CA 94305-2200.
- What is Anne Lynn Chang's phone number?
- The practice phone number listed in the NPPES registry for Anne Lynn Chang is (650) 723-4000.
- Does Anne Lynn Chang accept Medicare?
- Anne Lynn Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Anne Lynn Chang's NPI active?
- Yes — Anne Lynn Chang's NPI (1013049188) is active in the NPPES registry as of the last update on 2024-04-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.