Mary Katlin Nixon, MD

Primary specialty

Obstetrics & Gynecology PhysicianTaxonomy code 207V00000X

License

33858 Issued in OK

Practice address

3440 RC Luttrell Dr Ste 200
Norman, OK 73072-9005

Phone

(405) 360-1264

NPI assigned

May 26, 2018

Sex

Female

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

Obstetrics/Gynecology

Education

University of Oklahoma College of Medicine, 2018

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Variety Care, Inc.Group PAC ID 1557260007, 101 clinicians

Norman Regional Providers Specialty CareGroup PAC ID 5496900706, 143 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Norman Regional Hospital, Norman, OK, CCN 370008

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: mnixon328705@direct.integrisok.com
• Direct secure messaging: mnixon590349@direct.ochin.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.

• Norman Regional Providers Specialty Care

  • Surgery Physician
  • Norman, OK
  • NPI 1548513773
  Medicare reassignment Care Compare group NPD
• Variety Care, Inc.

  • Federally Qualified Health Center (FQHC)
  • Oklahoma City, OK
  • NPI 1780697813
  Care Compare group NPD
• Integris Baptist Medical Center Inc

  • General Acute Care Hospital
  • Oklahoma City, OK
  • NPI 1831103654
  NPD (past)
• Norman Regional Hospital Authority

  • General Acute Care Hospital
  • Norman, OK
  • NPI 1700882578
  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

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

{
    "created_epoch": "1527292800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1766361600000",
    "number": "1003307935",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "901 N PORTER AVE",
            "city": "NORMAN",
            "state": "OK",
            "postal_code": "730716482",
            "telephone_number": "405-307-1000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3440 RC LUTTRELL DR STE 200",
            "city": "NORMAN",
            "state": "OK",
            "postal_code": "730729005",
            "telephone_number": "405-360-1264"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1025 Straka Ter",
            "address_purpose": "LOCATION",
            "city": "Oklahoma City",
            "state": "OK",
            "postal_code": "731392544",
            "country_code": "US",
            "telephone_number": "405-632-6688",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1237 Alameda St",
            "address_purpose": "LOCATION",
            "city": "Norman",
            "state": "OK",
            "postal_code": "730713006",
            "country_code": "US",
            "telephone_number": "405-632-6688",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "NIXON",
        "first_name": "MARY",
        "middle_name": "KATLIN",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2018-05-26",
        "last_updated": "2025-12-22",
        "certification_date": "2025-12-22",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "207V00000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology",
            "state": "OK",
            "license": "33858",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Nicole M. Kish, O.D.,P.C.
• Nicole T. Jarvis, M.D., PLLC
• Andrea Nieves
• Angela Marie Nirschl, ARNP
• Julianne Nix
• Sydney Nixon
• Noble Minds Community Mental Health
• Nocturna of Norman LLC
• Nocturna Sleep Clinic LLC
• Brandy Marie Noel

• Obstetrics & Gynecology Physician in Norman, OK
• Providers in Norman, OK by specialty
• Obstetrics & Gynecology Physician in Oklahoma

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Dec 22, 2025; 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.