Gregory D. Olds, MD

Primary specialty

Gastroenterology PhysicianTaxonomy code 207RG0100X

License

49152 Issued in TN

Practice address

2200 E 3Rd St Ste 200
Chattanooga, TN 37404-2745

Phone

(423) 643-2500

Fax

(423) 305-7822

NPI assigned

Dec 1, 2006

Sex

Male

Sole proprietor

No

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 TN, GA2 enrollments

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 2

Specialty

Gastroenterology

Education

Other, 1996

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Hamilton Physician Group, IncGroup PAC ID 4789708553, 120 clinicians

Galen Medical Group, PCGroup PAC ID 2668377391, 122 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Memorial Healthcare System, Inc Hospital, Chattanooga, TN, CCN 440091
• Hamilton Medical Center Hospital, Dalton, GA, CCN 110001
• Parkridge Medical Center Hospital, Chattanooga, TN, CCN 440156

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: golds135289@direct.stlukeshealth.org

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.

• Galen Medical Group, PC

  • Internal Medicine Physician
  • Hixson, TN
  • NPI 1346250057

  Gastroenterology

  Medicare reassignment Care Compare group NPD
• Hamilton Physician Group Inc

  • Cardiovascular Disease Physician
  • Dalton, GA
  • NPI 1235455569
  Medicare reassignment Care Compare group NPD
• Galen Medical Group PC

  dba Galen Pharmacy

  • Non-Pharmacy Dispensing Site
  • Chattanooga, TN
  • NPI 1891248092
  NPD

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Memorial Health Care System Inc.

  dba Memorial Hospital Hixson

  • General Acute Care Hospital
  • Hixson, TN
  • NPI 1083778633
  Care Compare affiliation
• Memorial Health Care System Inc.

  dba Memorial Hospital

  • General Acute Care Hospital
  • Chattanooga, TN
  • NPI 1255428736
  Care Compare affiliation
• Parkridge Medical Center, Inc.

  dba Parkridge Medical Center

  • General Acute Care Hospital
  • Chattanooga, TN
  • NPI 1104874684
  Care Compare affiliation
• Hamilton Medical Center, Inc.

  • General Acute Care Hospital
  • Dalton, GA
  • NPI 1528056066
  Care Compare affiliation
• Hamilton Medical Center, Inc.

  • Psychiatric Hospital Unit
  • Dalton, GA
  • NPI 1760645782
  Care Compare affiliation
• Hamilton Physician Group Inc

  • Cardiovascular Disease Physician
  • Dalton, GA
  • NPI 1235455569

  Hospital

  Care Compare affiliation

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

{
    "created_epoch": "1164931200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1770336000000",
    "number": "1972671428",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4976 ALPHA LN",
            "city": "HIXSON",
            "state": "TN",
            "postal_code": "373435470",
            "telephone_number": "423-497-5355",
            "fax_number": "423-308-0281"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2200 E 3RD ST STE 200",
            "city": "CHATTANOOGA",
            "state": "TN",
            "postal_code": "374042745",
            "telephone_number": "423-643-2500",
            "fax_number": "423-305-7822"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1200 Memorial Dr",
            "address_purpose": "LOCATION",
            "city": "Dalton",
            "state": "GA",
            "postal_code": "307202529",
            "country_code": "US",
            "telephone_number": "706-272-6000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "OLDS",
        "first_name": "GREGORY",
        "middle_name": "D.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-12-01",
        "last_updated": "2026-02-06",
        "certification_date": "2026-02-06",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "GA",
            "license": "86555",
            "primary": false
        },
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "TN",
            "license": "49152",
            "primary": true
        },
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "MI",
            "license": "4301083262",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Brenda T Oglesby, NP
• Ogr Home Care Services
• Henry Tobechi Okafor, M.D.
• Thomas Okulski, MD
• John W Oldham, LCSW
• Sarah K Olds, NP-C
• Andrew Stuart Olinger, MD
• Rebecca S Olive, CRNA
• Oliver L Gregory MD
• Brandilyn Oliver, R.N.

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

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 6, 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.