Columbia Regional Medical Center, LLC

Primary specialty

Urology PhysicianTaxonomy code 208800000X

Legal business name

COLUMBIA REGIONAL MEDICAL CENTER, LLC

Doing business as

CORE Physicians

Practice address

1114 W 7TH St
Columbia, TN 38401-1810

Phone

(931) 388-9706

Fax

(931) 490-1062

NPI assigned

Mar 9, 2006

Last updated

Sep 11, 2025By the provider in NPPES

Organization subpart

No

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

Authorized official

Name

Dr. John O. Simmons, M.D.NPI 1245208602

Title

Ceo

Phone

(931) 388-9706

Specialties & licenses 3

Addresses

Other names 1

• CORE Physicians Doing business as

Locations

Practitioners 7

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.

• John O. Simmons, M.D.

  • Internal Medicine Physician
  • Columbia, TN
  • NPI 1245208602
  Authorized official Same address or phone
• Gary Wayne Dodd, ANP-BC, RN

  • Adult Health Nurse Practitioner
  • Nashville, TN
  • NPI 1952604704
  NPD
• Joel Martin Baker, PA-C

  • Physician Assistant
  • Nashville, TN
  • NPI 1851541619
  NPD (past)
• Stephen R Savage, MD

  • Family Medicine Physician
  • Pulaski, TN
  • NPI 1114071057
  NPD (past)
• Hassan G Azar, MD

  • Pulmonary Disease Physician
  • Olympia Fields, IL
  • NPI 1538504493
  NPD (past)
• Nancy Ann Hallo, MD

  • Diagnostic Radiology Physician
  • Kent, OH
  • NPI 1164461828
  NPD (past)
• Michael Kenneth Watterson, MD, FACR

  • Rheumatology Physician
  • Greenville, NC
  • NPI 1477548584
  NPD (past)

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

{
    "created_epoch": "1141862400000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1757548800000",
    "number": "1033187760",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1114 W 7TH ST",
            "city": "COLUMBIA",
            "state": "TN",
            "postal_code": "384011810",
            "telephone_number": "931-388-9706",
            "fax_number": "931-490-1062"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1114 W 7TH ST",
            "city": "COLUMBIA",
            "state": "TN",
            "postal_code": "384011810",
            "telephone_number": "931-388-9706",
            "fax_number": "931-490-1062"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "COLUMBIA REGIONAL MEDICAL CENTER, LLC",
        "organizational_subpart": "NO",
        "enumeration_date": "2006-03-09",
        "last_updated": "2025-09-11",
        "status": "A",
        "authorized_official_last_name": "SIMMONS",
        "authorized_official_first_name": "JOHN",
        "authorized_official_middle_name": "O.",
        "authorized_official_title_or_position": "CEO",
        "authorized_official_telephone_number": "931-388-9706",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "M.D."
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "NU",
            "license": null,
            "primary": false
        },
        {
            "code": "207RR0500X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Rheumatology",
            "state": "NU",
            "license": null,
            "primary": false
        },
        {
            "code": "208800000X",
            "taxonomy_group": "",
            "desc": "Urology",
            "state": "NU",
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "CORE Physicians",
            "code": "3",
            "type": "Doing Business As"
        }
    ]
}

• Columbia Oncology
• Columbia Operations, LLC (Life Care Center of Columbia)
• Columbia Orthodontics, PC
• Columbia Pediatric Clinic, Inc. (Columbia Pediatrics)
• Columbia Premier Urology PLLC
• Columbia Senior Living, LLC (Poplar Estates Assisted Living)
• Columbia Surgery Group, P.C.
• Columbia Surgical Associates
• Columbia TN Endoscopy ASC LLC (Mid-South Endoscopy Center)
• Columbia TN SNF LLC (Magnolia Healthcare and Rehabilitation Center)

• Urology Physician in Columbia, TN
• Providers in Columbia, TN by specialty
• Urology Physician in Tennessee

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 11, 2025; 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.