Mary Cecelia Portis, M.D.

Primary specialty

Gastroenterology PhysicianTaxonomy code 207RG0100X

License

MD26819 Issued in TN

Practice address

6005 Park Ave
Suite 323B
Memphis, TN 38119-5202

Phone

(901) 684-5500

Fax

(901) 684-5518

NPI assigned

Nov 28, 2005

Sex

Female

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

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

• G I Diagnostic and Therapeutic Center LLC

  • Endoscopy Clinic/Center
  • Germantown, TN
  • NPI 1760467732

  Gastroenterology

  NPD

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

{
    "created_epoch": "1133136000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1265415822",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "6005 PARK AVE",
            "address_2": "SUITE 323B",
            "city": "MEMPHIS",
            "state": "TN",
            "postal_code": "381195202",
            "telephone_number": "901-684-5500",
            "fax_number": "901-684-5518"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "6005 PARK AVE",
            "address_2": "SUITE 323B",
            "city": "MEMPHIS",
            "state": "TN",
            "postal_code": "381195202",
            "telephone_number": "901-684-5500",
            "fax_number": "901-684-5518"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "PORTIS",
        "first_name": "MARY",
        "middle_name": "CECELIA",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2005-11-28",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "TN",
            "license": "MD26819",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Ryan Claiborne Porter, M.D.
• Samuel Joseph Porter, COTA/L
• Vickie Lynn Porter, NP
• Stephen Gregory Portera, M.D.
• James Porterfield, M.D.
• Illana Posen, MD
• Ashley Renee Posey, ORT/L
• Sedwaniece Posey
• Positive Transitions, Inc.
• Erin C Poss, FNP

• Gastroenterology Physician in Memphis, TN
• Providers in Memphis, TN by specialty
• Gastroenterology Physician in Tennessee

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.