# MARK K DETWEILER, MD
> **GASTROENTEROLOGY** · LONDONDERRY, NH
## Provider
- **NPI:** 1548344583
- **Credential:** MD
- **Primary specialty:** GASTROENTEROLOGY
- **Gender:** Male
- **Medical school:** PENNSYLVANIA STATE UNIVERSITY COLLEGE OF MEDICINE
- **Graduation year:** 1979
## Practice
- **Address:** 1 B COMMONS DR, LONDONDERRY, NH 030533442
- **Phone:** 6038184712
- **Accepts Medicare assignment:** Yes (individual)
- **Telehealth:** No
## Source
- [NPI Registry](https://npiregistry.cms.hhs.gov/provider-view/1548344583)
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