Internal Medicine, Gastroenterology
Dr. LARRY JOHNSTON D.O.
Identity confirmed via CMS NPPES · September 30, 2026 · A directory match is not a coverage approval.
Is this your practice? This listing was imported from public provider identity data (CMS NPPES) and has not yet been claimed. Claim this listing to confirm the practice details. Plan acceptance stays unpublished until the practice reports it.
Public record
NPI 1386036333 · enumerated 2015-02-28 · record updated 2022-08-02. Source: CMS NPPES. A listing is not a TRICARE network approval.
NPPES recordGoogle Maps Apple Maps OpenStreetMap
Addresses and phones
- Practice location 1215 DUFF AVE, AMES, IA, 50010-5469 (515) 239-4450 Google Maps Apple Maps OpenStreetMap
- Mailing address 1215 DUFF AVE, AMES, IA, 50010-5469 (515) 239-4400 Google Maps Apple Maps OpenStreetMap
Specialties
- Internal Medicine, Gastroenterology 207RG0100X · Primary · License 05983 IA
- Internal Medicine 207R00000X · License 6004 OK
In this directory
Locations and evidence
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Practice location
AMES, IA, 500105469
Accepting new patientsNot reportedCMS NPPES · September 30, 2026
Plan acceptance
- No published plan acceptance yet. Confirm directly with the practice, or claim this listing if it's yours.