Charles Shannon
NPI 1659831584 · Critical Care Medicine (Internal Medicine) Physician · Houston, TX
Charles Shannon is a Critical Care Medicine (Internal Medicine) Physician provider in Houston, TX (NPI 1659831584).
Provider details
- NPI number
- 1659831584
- Entity type
- Individual
- Primary specialty
- Critical Care Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
7 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Mailing address
Additional practice locations (1)
- 1 Baylor PlzHouston, TX 77030-3498Phone: (214) 546-5308
Registry dates
- Enumerated
- 2019-03-25
- Last updated
- 2026-03-27
- Certified
- 2026-03-27
Frequently asked questions
- What is Charles Shannon's NPI number?
- Charles Shannon's National Provider Identifier (NPI) is 1659831584, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charles Shannon's specialty?
- Charles Shannon is listed in the NPPES registry with a primary specialty of Critical Care Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Charles Shannon located?
- Charles Shannon's practice location on file with NPPES is 1504 Taub Loop, Houston, TX 77030-1608.
- What is Charles Shannon's phone number?
- The practice phone number listed in the NPPES registry for Charles Shannon is (713) 798-1000.
- Is Charles Shannon's NPI active?
- Yes — Charles Shannon's NPI (1659831584) is active in the NPPES registry as of the last update on 2026-03-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.