Stephen WillisMD
Gastroenterology·Phillipsburg, NJ
Stephen Willis, MD is a Gastroenterology provider in Phillipsburg, NJ affiliated with 1 ambulatory surgery center in PA, as of July 2026.
- NPI1629139076
- Registered2006
- Centers1
- StatePA
- Class of1998
Case volumes, referral patterns, and payer mix live in DataLily AI Insights.
Ambulatory surgery centers
Centers whose service lines match this provider’s. Affiliations change; verify independently.
Education
Education on record as of August 2026.
Stephen Willis at a glance
- Provider
- Stephen Willis
- Credential
- MD
- Specialty
- Gastroenterology
- Procedures
- Gastroenterology CPT codes
- Location
- Phillipsburg, NJ
- Medical school
- Rutgers R W Johnson Medical School (cam/new Bruns/pisc)
- Graduated
- 1998
- NPI registered
- 2006
- NPI
- 1629139076
- 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 Stephen Willis practice?
Stephen Willis, MD is based in Phillipsburg, NJ and is affiliated with 1 ambulatory surgery center: Valley Ambulatory Surgical Center in Bethlehem, PA. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.
What is Stephen Willis's NPI number?
Stephen Willis's National Provider Identifier (NPI) is 1629139076, registered in 2006. Specialty on record: Gastroenterology; credential MD.
Where did Stephen Willis go to medical school?
Stephen Willis, MD attended Rutgers R W Johnson Medical School (cam/new Bruns/pisc), graduating in 1998.
How many Gastroenterology providers in New Jersey work at ambulatory surgery centers?
180 Gastroenterology surgeons and proceduralists in New Jersey are affiliated with ambulatory surgery centers in DataLily AI's current snapshot, Stephen Willis among them. The New Jersey Gastroenterology directory lists each one by city with credential, NPI, and center affiliations.
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