Individual provider Active NPI

Christopher John Martindale

  • Psychiatric/Mental Health Nurse Practitioner
  • Chicago, IL
National Provider Identifier
1649144643
Registry record updated Jun 16, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Psychiatric/Mental Health Nurse PractitionerTaxonomy code 363LP0808X
License
209035829 Issued in IL
Practice address
4859 N Ashland Ave # 1E
Chicago, IL 60640-3412
Phone
(517) 861-9538
NPI assigned
Oct 2, 2025
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jun 16, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Registered Nurse 163W00000X 041500458 IL
Psychiatric/Mental Health Nurse Practitioner 363LP0808X 209035829 IL Primary

Addresses

Primary practice location

4859 N Ashland Ave # 1E
Chicago, IL 60640-3412

Mailing address

4859 N Ashland Ave # 1E
Chicago, IL 60640-3412

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)
Not enrolled

State licenses

LicenseStateTypeSpecialty
041500458ILMDRegistered Nurse

NPI Registry JSON

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

{
    "created_epoch": "1759363200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1781568000000",
    "number": "1649144643",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4859 N ASHLAND AVE # 1E",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606403412"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4859 N ASHLAND AVE # 1E",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606403412",
            "telephone_number": "517-861-9538"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MARTINDALE",
        "first_name": "CHRISTOPHER",
        "middle_name": "JOHN",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2025-10-02",
        "last_updated": "2026-06-16",
        "certification_date": "2026-06-16",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "163W00000X",
            "taxonomy_group": "",
            "desc": "Registered Nurse",
            "state": "IL",
            "license": "041500458",
            "primary": false
        },
        {
            "code": "363LP0808X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Psychiatric/Mental Health",
            "state": "IL",
            "license": "209035829",
            "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 Jun 16, 2026; 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.