Individual provider · Type 1 NPI

John Holbrook Chalmers Jr., MD

Diagnostic Radiology Physician · Tyler, TX

NPI number 1326023896 Active

Practice location

11937 US Highway 271
Tyler, TX 75708-3154

Call (903) 877-3451 Map

Mailing address

PO Box 847824
Dallas, TX 75284-7824

Specialties and licenses

TaxonomyCodeLicense
Diagnostic Radiology Physician Primary 2085R0202XD6981 (TX)

Diagnostic Radiology Physician: A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.

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About NPI 1326023896

John Holbrook Chalmers Jr., MD's National Provider Identifier is 1326023896, issued on Dec 7, 2005. The primary taxonomy on file is Diagnostic Radiology Physician (2085R0202X), and the practice location is in Tyler, TX. The record was last updated on Jul 13, 2026.