NPIMap

Individual provider Active NPI

Markham L Nightengale, M. D.

  • Gastroenterology Physician
  • Tulsa, OK
National Provider Identifier
1144215971
Registry record updated Mar 19, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Gastroenterology PhysicianTaxonomy code 207RG0100X
License
18311 Issued in OK
Practice address
4200 E Skelly Dr Ste 700
Tulsa, OK 74135-3256
Phone
(918) 438-7050
Fax
(918) 221-0835
NPI assigned
Sep 19, 2005
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Mar 19, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Gastroenterology Physician 207RG0100X 18311 OK Primary

Addresses

Primary practice location

4200 E Skelly Dr Ste 700
Tulsa, OK 74135-3256

Mailing address

PO Box 305
Lowell, AR 72745-0305
Phone (918) 481-4706

Other identifiers 1

IdentifierTypeStateIssuer
100131480AMedicaidOK

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in OK, TX2 enrollments
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 2

Enrollment IDStateProvider typePAC IDDetails
I20100927000063 OK Practitioner - GastroenterologyPractitioner - Internal Medicine 6901830025 Reassigns benefits to 3 organizations
I20230103000458 TX Practitioner - GastroenterologyPractitioner - Internal Medicine 6901830025 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Gastroenterology
Education
Other, 1988
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Creek Nation Hospital and ClinicsGroup PAC ID 5698786226, 364 clinicians
Adult Gastroenterology Associates IncGroup PAC ID 0840223921, 15 clinicians

Practice addresses (Care Compare)

10109 E 79TH St
Tulsa, OK 74133-4564
Phone (918) 756-4333

4150 SE Adams Rd
Bartlesville, OK 74006-8410
Phone (918) 438-7050

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
84.37 of 100Reported as group
Quality
75.14
Promoting interoperability
98
Improvement activities
40
Cost
74.42

Merit-based Incentive Payment System (MIPS)

Final score
90.91 of 100Reported as apm
Quality
76.55
Promoting interoperability
100
Improvement activities
40

Merit-based Incentive Payment System (MIPS)

Final score
85.12 of 100Reported as group
Quality
83.76
Promoting interoperability
100
Improvement activities
40
Cost
56.64

Merit-based Incentive Payment System (MIPS)

Final score
85.4 of 100Reported as group
Quality
72.78
Promoting interoperability
98
Improvement activities
40
Cost
76.77

Procedures performed for Medicare patients

ProcedureNumber of procedures
Colonoscopy167
Upper gastrointestinal (GI) endoscopy for acid reflux226

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

Practice roles

OrganizationSpecialtyStatusNew patients
Creek Nation Hospital & Clinics CurrentSince Nov 6, 2022 Accepting new patients
Cherokee Nation Current Accepting new patients
Adult Gastroenterology Associates Inc Gastroenterology CurrentSince Apr 1, 1993 Accepting new patients
Creek Nation Hospital & Clinics Current Accepting new patients
Stillwater Medical Center Authority CurrentSince Aug 1, 2018 Accepting new patients
Stillwater Medical Center Authority Gastroenterology CurrentSince Aug 1, 2018 Accepting new patients
Cherokee Nation CurrentSince Feb 19, 2024 Accepting new patients
Creek Nation Hospital & Clinics CurrentSince Nov 6, 2022 Accepting new patients
Cherokee Nation CurrentSince Feb 19, 2024 Accepting new patients
Cherokee Nation Current Accepting new patients
Creek Nation Hospital & Clinics Gastroenterology CurrentSince Nov 6, 2022 Accepting new patients
Cherokee Nation Past Accepting new patients
Oklahoma Surgical Hospital, LLC Past Accepting new patients

Locations

4150 SE Adams Rd
Bartlesville, OK 74006
Phone (918) 331-9979

859 E Melton Dr
Jay, OK 74346
Phone (918) 253-4271

1001 S 41st St E
#3
Muskogee, OK 74403
Phone (918) 687-0201

1020 Lenape Dr
Nowata, OK 74048
Phone (918) 273-0192

900 E Airport Rd
Okmulgee, OK 74447
Phone 91875643334448

1401 Morris Dr
Okmulgee, OK 74447
Phone (918) 456-0641

417 Fairview Ave
Ponca City, OK 74601
Phone (580) 762-3770

900 N Owen Walters Blvd
Salina, OK 74365
Phone (918) 434-8500

1301 W 6th Ave
Ste 108
Stillwater, OK 74074
Phone (405) 533-1695

100 S Bliss Ave
Tahlequah, OK 74464
Phone (918) 458-3100

Dept 2269
Tulsa, OK 74182

6465 S Yale Ave
Ste 1002
Tulsa, OK 74136
Phone (918) 481-4700

10109 E 79th St
Tulsa, OK 74133
Phone (888) 552-6760

4200 E Skelly Dr
Ste 700
Tulsa, OK 74135
Phone (918) 438-7050

Dept 1467
Tulsa, OK 74182

4200 E Skelly Dr
Tulsa, OK 74135
Phone (918) 438-7050

27371 S 4410 Rd
Vinita, OK 74301
Phone (918) 256-4800

Interoperability endpoints

  • FHIR API: https://fhir-myrecord.cerner.com/r4/37d0fa6b-e0f7-4581-adbb-f9e2eac855e1/

Organizations & group practices 13

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.

View all 13

Hospital & facility affiliations 6

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

NPI Registry JSON

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

{
    "created_epoch": "1127088000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1742342400000",
    "number": "1144215971",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 305",
            "city": "LOWELL",
            "state": "AR",
            "postal_code": "727450305",
            "telephone_number": "918-481-4706",
            "fax_number": "918-481-4765"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4200 E SKELLY DR STE 700",
            "city": "TULSA",
            "state": "OK",
            "postal_code": "741353256",
            "telephone_number": "918-438-7050",
            "fax_number": "918-221-0835"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "NIGHTENGALE",
        "first_name": "MARKHAM",
        "middle_name": "L",
        "credential": "M. D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-09-19",
        "last_updated": "2025-03-19",
        "certification_date": "2025-03-19",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "OK",
            "license": "18311",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "100131480A",
            "state": "OK"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Tulsa, OK

Sources for this page

Verify at the official NPI Registry.