William AndersenMD
Dermatology·Lancaster, PA
William Andersen, MD is a Dermatology provider in Lancaster, PA, as of July 2026.
- NPI1538135900
- Registered2006
- Class of1987
Case volumes, referral patterns, and payer mix live in DataLily AI Insights.
Education
Education on record as of August 2026.
William Andersen at a glance
- Provider
- William Andersen
- Credential
- MD
- Specialty
- Dermatology
- Location
- Lancaster, PA
- Medical school
- Columbia University College of Physicians and Surgeons
- Graduated
- 1987
- NPI registered
- 2006
- NPI
- 1538135900
- Snapshot
- July 2026
Identity, specialty, and affiliations change over time. This is not an endorsement, and not clinical, billing, or legal advice. Providers may request corrections at founders@datalilyai.com. Read the DataLily AI data methodology.
Questions
Where does William Andersen practice?
William Andersen, MD is based in Lancaster, PA. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.
What is William Andersen's NPI number?
William Andersen's National Provider Identifier (NPI) is 1538135900, registered in 2006. Specialty on record: Dermatology; credential MD.
Where did William Andersen go to medical school?
William Andersen, MD attended Columbia University College of Physicians and Surgeons, graduating in 1987.
How many Dermatology providers in Pennsylvania work at ambulatory surgery centers?
68 Dermatology surgeons and proceduralists in Pennsylvania are affiliated with ambulatory surgery centers in DataLily AI's current snapshot, William Andersen among them. The Pennsylvania Dermatology directory lists each one by city with credential, NPI, and center affiliations.
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