Individual provider Active NPI

Nicholas William Karlow, MD

  • Emergency Medicine Physician
  • Saint Louis, MO
National Provider Identifier
1922669167
Registry record updated Sep 9, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Emergency Medicine PhysicianTaxonomy code 207P00000X
License
2022044117 Issued in MO
Practice address
11133 Dunn Rd
Dept Emergency Med
Saint Louis, MO 63136-6163
Phone
(314) 362-9123
Fax
(314) 747-9160
NPI assigned
Jun 27, 2019
Last updated
Sep 9, 2025By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Sep 9, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Emergency Medicine Physician 207P00000X 2022044117 MO Primary

Addresses

Primary practice location

11133 Dunn Rd
Dept Emergency Med
Saint Louis, MO 63136-6163

Mailing address

PO Box 7412011
Chicago, IL 60674-2011
Phone (314) 362-9123

Other identifiers 1

IdentifierTypeStateIssuer
200071816MedicaidMO

Electronic endpoints 1

TypeEndpointUseAffiliation
FHIR URL https://epicproxy.et0965.epichosted.com/FHIRProxy/api/FHIR/DSTU2/ Washington University

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MO
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

Enrollment IDStateProvider typePAC IDDetails
I20230311000039 MO Practitioner - Emergency Medicine 0547596777 Reassigns benefits to 8 organizations

Care Compare profile

Medicare Care Compare
Specialty
Emergency Medicine
Education
Other, 2019
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Washington University Community Specialists LLCGroup PAC ID 8628588514, 94 clinicians
Emergency Physicians of St Lukes LLCGroup PAC ID 3779714142, 63 clinicians

Practice addresses (Care Compare)

10 Hospital Dr
Saint Peters, MO 63376-1659
Phone (314) 362-9123

232 S Woods Mill Rd
Chesterfield, MO 63017-3406
Phone (314) 434-1500

Hospital & facility affiliations

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
2022044117MOMDEmergency Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Mercy Hospital South CurrentSince Jul 20, 2023 Accepting new patients
Mercy Hospitals East Communities CurrentSince Jul 20, 2023 Accepting new patients
Emergency Physicians of St. Luke's, LLC Emergency Medicine CurrentSince Oct 1, 2024 Accepting new patients
Physician Specialists of St Lukes LLC Emergency Medicine CurrentSince Oct 1, 2024 Accepting new patients
Mercy Hospitals East Communities Emergency Medicine CurrentSince Jul 20, 2023 Accepting new patients
Mercy Hospital Jefferson CurrentSince Mar 20, 2023 Accepting new patients
Mercy Hospitals East Communities Emergency Medicine CurrentSince Jul 20, 2023 Accepting new patients
Southeastern Emergency Physicians of Memphis LLC Emergency Medicine CurrentSince Jun 19, 2023 Accepting new patients
Mercy Hospital Jefferson CurrentSince Mar 20, 2023 Accepting new patients
Mercy Hospital South Emergency Medicine CurrentSince Jul 20, 2023 Accepting new patients
Mercy Hospitals East Communities CurrentSince Jul 20, 2023 Accepting new patients
Washington University Community Specialists, LLC CurrentSince Aug 1, 2025 Accepting new patients

Locations

1600 E Broadway
Columbia, MO 65201
Phone (573) 632-5000

1400 US Highway 61
Crystal Cty, MO 63028
Phone (636) 933-1111

233 Clarkson Rd
Ellisville, MO 63011
Phone (636) 256-8644

1225 Graham Rd
#U
Florissant, MO 63031

10010 Kennerly Rd
Saint Louis, MO 63128
Phone (314) 525-1328

11133 Dunn Rd
Saint Louis, MO 63136
Phone (314) 653-5000

11133 Dunn Rd
#U
Saint Louis, MO 63136

2345 Dougherty Ferry Rd
Saint Louis, MO 63122
Phone (314) 821-5850

615 S New Ballas Rd
Saint Louis, MO 63141
Phone (314) 251-4687

10 Hospital Dr
#U
Saint Peters, MO 63376

232 S Woods Mill Rd
Town and Country, MO 63017
Phone (314) 205-6030

901 E 5th St
Washington, MO 63090
Phone (636) 239-8000

Organizations & group practices 12

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

Hospital & facility affiliations 3

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": "1561593600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757376000000",
    "number": "1922669167",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 7412011",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606742011",
            "telephone_number": "314-362-9123",
            "fax_number": "314-747-9160"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "11133 DUNN RD",
            "address_2": "DEPT EMERGENCY MED",
            "city": "SAINT LOUIS",
            "state": "MO",
            "postal_code": "631366163",
            "telephone_number": "314-362-9123",
            "fax_number": "314-747-9160"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "KARLOW",
        "first_name": "NICHOLAS",
        "middle_name": "WILLIAM",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2019-06-27",
        "last_updated": "2025-09-09",
        "certification_date": "2023-03-09",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "MO",
            "license": "2022044117",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "200071816",
            "state": "MO"
        }
    ],
    "endpoints": [
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://epicproxy.et0965.epichosted.com/FHIRProxy/api/FHIR/DSTU2/",
            "affiliation": "Y",
            "affiliationName": "Washington University",
            "address_1": "11133 Dunn Rd",
            "address_2": "Dept Emergency Med",
            "city": "Saint Louis",
            "state": "MO",
            "country_code": "US",
            "postal_code": "631366163",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Saint Louis, MO

Sources for this page

Verify at the official NPI Registry.