Omar AtassiM.D.
Omar Atassi, M.D. is an Urology provider in Neenah, WI affiliated with 2 ambulatory surgery centers in WI, as of July 2026.
- NPI1154380046
- Registered2006
- Centers2
- StateWI
- Class of1990
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.
Omar Atassi at a glance
- Provider
- Omar Atassi
- Credential
- M.D.
- Specialty
- Urology
- Procedures
- Urology CPT codes
- Location
- Neenah, WI
- Medical school
- Loyola University of Chicago, Stritch School of Medicine
- Graduated
- 1990
- NPI registered
- 2006
- NPI
- 1154380046
- 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 Omar Atassi practice?
Omar Atassi, M.D. is based in Neenah, WI and is affiliated with 2 ambulatory surgery centers: Wisconsin Institute Of Surgical Excellence LLC in Neenah, WI and Marshfield Clinic INC in Marshfield, WI. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.
What is Omar Atassi's NPI number?
Omar Atassi's National Provider Identifier (NPI) is 1154380046, registered in 2006. Specialty on record: Urology; credential M.D.
Where did Omar Atassi go to medical school?
Omar Atassi, M.D. attended Loyola University of Chicago, Stritch School of Medicine, graduating in 1990.
How many Urology providers in Wisconsin work at ambulatory surgery centers?
38 Urology surgeons and proceduralists in Wisconsin are affiliated with ambulatory surgery centers in DataLily AI's current snapshot, Omar Atassi among them. The Wisconsin Urology directory lists each one by city with credential, NPI, and center affiliations.
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