Individual provider Active NPI

Mark Christopher Walker, M.D.

  • Psychiatry Physician
  • Chicago, IL
National Provider Identifier
1265561724
Registry record updated Jul 8, 2007
On this page

Key facts

NPPES NPI Registry
Primary specialty
Psychiatry PhysicianTaxonomy code 2084P0800X
License
36-063569 Issued in IL
Practice address
1 E Wacker Dr
Suite 2100
Chicago, IL 60601-1802
Phone
(312) 908-7878
Fax
(630) 655-0728
NPI assigned
Mar 2, 2007
Last updated
Jul 8, 2007By the provider in NPPES
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Jul 8, 2007

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Psychiatry Physician 2084P0800X 36-063569 IL Primary

Addresses

Primary practice location

1 E Wacker Dr
Suite 2100
Chicago, IL 60601-1802

Mailing address

418 N Monroe St
Hinsdale, IL 60521-3151
Phone (312) 908-7878

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Not listed in the public Medicare enrollment file

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
36-063569ILMDPsychiatry Physician

NPI Registry JSON

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

{
    "created_epoch": "1172793600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1183852800000",
    "number": "1265561724",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "418 N MONROE ST",
            "city": "HINSDALE",
            "state": "IL",
            "postal_code": "605213151",
            "telephone_number": "312-908-7878",
            "fax_number": "630-655-0728"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1 E WACKER DR",
            "address_2": "SUITE 2100",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606011802",
            "telephone_number": "312-908-7878",
            "fax_number": "630-655-0728"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WALKER",
        "first_name": "MARK",
        "middle_name": "CHRISTOPHER",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2007-03-02",
        "last_updated": "2007-07-08",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "IL",
            "license": "36-063569",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Chicago, IL

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 8, 2007; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.