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John Chalmers, MD
NPI 1326023896 · Diagnostic Radiology Physician · Tyler, TX
John Chalmers, MD is a Diagnostic Radiology Physician provider in Tyler, TX (NPI 1326023896).
Provider details
- NPI number
- 1326023896
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- License
- D6981 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
11937 US Highway 271
Tyler, TX 75708-3154
Phone: (903) 877-3451
Approximate (ZIP-level) locationGet directions
Mailing address
Po Box 847824
Dallas, TX 75284-7824
Registry dates
- Enumerated
- 2005-12-07
- Last updated
- 2007-07-08
Frequently asked questions
- What is John Chalmers's NPI number?
- John Chalmers's National Provider Identifier (NPI) is 1326023896, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Chalmers's specialty?
- John Chalmers is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is John Chalmers located?
- John Chalmers's practice location on file with NPPES is 11937 US Highway 271, Tyler, TX 75708-3154.
- What is John Chalmers's phone number?
- The practice phone number listed in the NPPES registry for John Chalmers is (903) 877-3451.
- Is John Chalmers's NPI active?
- Yes — John Chalmers's NPI (1326023896) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.