Charles Maxwell Shannon

Primary specialty

Critical Care Medicine (Internal Medicine) PhysicianTaxonomy code 207RC0200X

License

T7037 Issued in TX

Practice address

1504 Taub Loop
Houston, TX 77030-1608

Phone

(713) 873-8890

NPI assigned

Mar 25, 2019

Last updated

Aug 4, 2026By the provider in NPPES

Sex

Male

Sole proprietor

Yes

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 3

Addresses

Medicare fee-for-service enrollment

Enrolled in TX

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Specialty

Critical Care (Intensivists)Also: Pulmonary Disease

Education

Baylor College of Medicine, 2019

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

State licenses

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Baylor College of Medicine

  dba HCHD Community Medicine

  • Family Medicine Physician
  • Houston, TX
  • NPI 1053352914
  Medicare reassignment

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1553472000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1785801600000",
    "number": "1659831584",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "7010 STAFFORDSHIRE BLVD APT 147",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "770304128",
            "telephone_number": "214-546-5308"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1504 TAUB LOOP",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "770301608",
            "telephone_number": "713-873-8890"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1 Baylor Plz",
            "address_purpose": "LOCATION",
            "city": "Houston",
            "state": "TX",
            "postal_code": "770303498",
            "country_code": "US",
            "telephone_number": "214-546-5308",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "SHANNON",
        "first_name": "CHARLES",
        "middle_name": "MAXWELL",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2019-03-25",
        "last_updated": "2026-08-04",
        "certification_date": "2026-08-04",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "207RC0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Critical Care Medicine",
            "state": "TX",
            "license": "T7037",
            "primary": true
        },
        {
            "code": "207RP1001X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Pulmonary Disease",
            "state": "TX",
            "license": "T7037",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Donna Shanks, D.O.
• Jessica Shanks, LMT
• Kari Shanks, APRN, FNP-C
• Swabna K Shanmugiavelayutham, MD
• Kathleen Shannon-McAdams, RN, ANP, GNP
• Debra Sue Shannon, CRNA
• Honesty J Shannon
• Lorraine Terry Shannon, NP
• Marcia Shannon, LPC, LCDC
• Rhonda Lea Shannon, MD

• Critical Care Medicine (Internal Medicine) Physician in Houston, TX
• Providers in Houston, TX by specialty
• Critical Care Medicine (Internal Medicine) Physician in Texas

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 4, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.