David GiammarM.D.
Colorectal Surgery·Westerville, OH
David Giammar, M.D. is a Colorectal Surgery provider in Westerville, OH, as of July 2026.
- NPI1154307858
- Registered2005
- Class of1996
Case volumes, referral patterns, and payer mix live in DataLily AI Insights.
Education
Education on record as of August 2026.
David Giammar at a glance
- Provider
- David Giammar
- Credential
- M.D.
- Specialty
- Colorectal Surgery (Proctology)
- Location
- Westerville, OH
- Medical school
- Northeastern Ohio University College of Medicine
- Graduated
- 1996
- NPI registered
- 2005
- NPI
- 1154307858
- 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 David Giammar practice?
David Giammar, M.D. is based in Westerville, OH. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.
What is David Giammar's NPI number?
David Giammar's National Provider Identifier (NPI) is 1154307858, registered in 2005. Specialty on record: Colorectal Surgery (Proctology); credential M.D.
Where did David Giammar go to medical school?
David Giammar, M.D. attended Northeastern Ohio University College of Medicine, graduating in 1996.
How many Colorectal Surgery providers in Ohio work at ambulatory surgery centers?
12 Colorectal Surgery surgeons and proceduralists in Ohio are affiliated with ambulatory surgery centers in DataLily AI's current snapshot, David Giammar among them. The Ohio Colorectal Surgery directory lists each one by city with credential, NPI, and center affiliations.
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