Garrett Nix, MD

Primary specialty

Emergency Medicine PhysicianTaxonomy code 207P00000X

License

39135 Issued in OK

Practice address

700 NE 13TH St
Oklahoma City, OK 73104-5004

Phone

(405) 271-5321

NPI assigned

Mar 22, 2019

Sex

Male

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in OK

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

Emergency Medicine

Education

University of Alabama School of Medicine, 2019

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Ou Health Partners IncGroup PAC ID 5991105876, 1,167 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• O U Medical Center Hospital, Oklahoma City, OK, CCN 370093
• Norman Regional Hospital, Norman, OK, CCN 370008

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: gnix311266@direct.integrisok.com

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.

• Ou Health Partners, Inc

  • Multi-Specialty Clinic/Center
  • Oklahoma City, OK
  • NPI 1528642642
  Medicare reassignment Care Compare group NPD
• Norman Regional Hospital Authority

  • Emergency Medicine Physician
  • Norman, OK
  • NPI 1912563727
  Medicare reassignment NPD
• Norman Regional Hospital Authority

  • Ambulatory Surgical Clinic/Center
  • Norman, OK
  • NPI 1508419474
  NPD
• Ou Health Partners, Inc

  • Prosthetic/Orthotic Supplier
  • Oklahoma City, OK
  • NPI 1447834460
  NPD
• Norman Regional Hospital Authority

  • General Acute Care Hospital
  • Norman, OK
  • NPI 1700882578
  NPD (past)
• Ou Medicine Inc.

  • General Acute Care Hospital
  • Oklahoma City, OK
  • NPI 1649794157
  NPD (past)

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

• Norman Regional Hospital Authority

  • General Acute Care Hospital
  • Norman, OK
  • NPI 1700882578
  Care Compare affiliation
• Ou Medicine Inc.

  • General Acute Care Hospital
  • Oklahoma City, OK
  • NPI 1649794157
  Care Compare affiliation

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

{
    "created_epoch": "1553212800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1771545600000",
    "number": "1528528908",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "700 NE 13TH ST",
            "city": "OKLAHOMA CITY",
            "state": "OK",
            "postal_code": "731045004",
            "telephone_number": "405-271-5321"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "700 NE 13TH ST",
            "city": "OKLAHOMA CITY",
            "state": "OK",
            "postal_code": "731045004",
            "telephone_number": "405-271-5321"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "625 19th St S",
            "address_purpose": "LOCATION",
            "city": "Birmingham",
            "state": "AL",
            "postal_code": "352331900",
            "country_code": "US",
            "telephone_number": "205-934-3640",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "3300 NW Expressway",
            "address_purpose": "LOCATION",
            "city": "Oklahoma City",
            "state": "OK",
            "postal_code": "731124999",
            "country_code": "US",
            "telephone_number": "405-949-3011",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "NIX",
        "first_name": "GARRETT",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2019-03-22",
        "last_updated": "2026-02-20",
        "certification_date": "2026-02-20",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "AL",
            "license": "MD.41882",
            "primary": false
        },
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "OK",
            "license": "39135",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Fidelia Nabi Nitah, PMHNP-BC, FNP-BC
• Peyton Nitz
• Marcy Niver
• Ashley Dorner Nix, CRNP
• Carly Nix, PT
• Jonathan Riley Nix, DPT
• Megan Elizabeth Nix
• Brenna Carlene Nixon
• Cameron Nixon
• Courtney Nixon, MD

• Emergency Medicine Physician in Oklahoma City, OK
• Providers in Oklahoma City, OK by specialty
• Emergency Medicine Physician in Oklahoma

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 20, 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.