Stephen SimmerMD
Gastroenterology·Grand Rapids, MI
Stephen Simmer, MD is a Gastroenterology provider in Grand Rapids, MI, as of July 2026.
- NPI1972953917
- Registered2016
- Class of2016
Case volumes, referral patterns, and payer mix live in DataLily AI Insights.
Education
Education on record as of August 2026.
Stephen Simmer at a glance
- Provider
- Stephen Simmer
- Credential
- MD
- Specialty
- Gastroenterology
- Procedures
- Gastroenterology CPT codes
- Location
- Grand Rapids, MI
- Medical school
- Wayne State University School of Medicine
- Graduated
- 2016
- NPI registered
- 2016
- NPI
- 1972953917
- 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 Simmer practice?
Stephen Simmer, MD is based in Grand Rapids, MI. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.
What is Stephen Simmer's NPI number?
Stephen Simmer's National Provider Identifier (NPI) is 1972953917, registered in 2016. Specialty on record: Gastroenterology; credential MD.
Where did Stephen Simmer go to medical school?
Stephen Simmer, MD attended Wayne State University School of Medicine, graduating in 2016.
How many Gastroenterology providers in Michigan work at ambulatory surgery centers?
93 Gastroenterology surgeons and proceduralists in Michigan are affiliated with ambulatory surgery centers in DataLily AI's current snapshot, Stephen Simmer among them. The Michigan Gastroenterology directory lists each one by city with credential, NPI, and center affiliations.
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