Walter HassigM.D.
Gastroenterology·Federal Way, WA
Walter Hassig, M.D. is a Gastroenterology provider in Federal Way, WA affiliated with 3 ambulatory surgery centers in WA, as of July 2026.
- NPI1730152794
- Registered2006
- Centers3
- StateWA
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.
Walter Hassig at a glance
- Provider
- Walter Hassig
- Credential
- M.D.
- Specialty
- Gastroenterology
- Procedures
- Gastroenterology CPT codes
- Location
- Federal Way, WA
- NPI registered
- 2006
- NPI
- 1730152794
- 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 Walter Hassig practice?
Walter Hassig, M.D. is based in Federal Way, WA and is affiliated with 3 ambulatory surgery centers: Washington Gastroenterology in Tacoma, WA, Puyallup Endoscopy Center in Puyallup, WA, and Washington Gastroenterology in Federal Way, WA. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.
What is Walter Hassig's NPI number?
Walter Hassig's National Provider Identifier (NPI) is 1730152794, registered in 2006. Specialty on record: Gastroenterology; credential M.D.
How many Gastroenterology providers in Washington work at ambulatory surgery centers?
120 Gastroenterology surgeons and proceduralists in Washington are affiliated with ambulatory surgery centers in DataLily AI's current snapshot, Walter Hassig among them. The Washington Gastroenterology directory lists each one by city with credential, NPI, and center affiliations.
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