William MarshallDO
William Marshall, DO is a General Practice provider in Valhalla, NY, as of July 2026.
- NPI1174533061
- Registered2006
- Class of1999
Case volumes, referral patterns, and payer mix live in DataLily AI Insights.
Education
Education on record as of August 2026.
William Marshall at a glance
- Provider
- William Marshall
- Credential
- DO
- Specialty
- General Practice
- Procedures
- General Practice CPT codes
- Location
- Valhalla, NY
- Medical school
- New York College of Osteo Medicine of New York Institute of Technology
- Graduated
- 1999
- NPI registered
- 2006
- NPI
- 1174533061
- 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 Marshall practice?
William Marshall, DO is based in Valhalla, NY. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.
What is William Marshall's NPI number?
William Marshall's National Provider Identifier (NPI) is 1174533061, registered in 2006. Specialty on record: General Practice; credential DO.
Where did William Marshall go to medical school?
William Marshall, DO attended New York College of Osteo Medicine of New York Institute of Technology, graduating in 1999.
How many General Practice providers in New York work at ambulatory surgery centers?
1 General Practice surgeons and proceduralists in New York are affiliated with ambulatory surgery centers in DataLily AI's current snapshot, William Marshall among them. The New York General Practice directory lists each one by city with credential, NPI, and center affiliations.
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