Organization Active NPI

1 On 1 MD PLLC

  • Internal Medicine Physician
  • Chicago, IL
National Provider Identifier
1578736112
Registry record updated Jan 5, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
Legal business name
1 ON 1 MD PLLC
Practice address
1828 W Webster Ave Ste 450
Chicago, IL 60614-2916
Phone
(312) 544-0200
Fax
(312) 544-0299
NPI assigned
Apr 3, 2008
Last updated
Jan 5, 2026By the provider in NPPES
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Jan 5, 2026

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

Authorized official

Name
Linda Huang, MDNPI 1114083730
Title
Medical Director
Phone
(312) 544-0200

Authorized official NPPES reports the official by name only. The link goes to the one practitioner connected to this organization with that name.

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X NU Primary

Addresses

Primary practice location

1828 W Webster Ave Ste 450
Chicago, IL 60614-2916

Mailing address

3302 N Lincoln Ave Unit 495
Chicago, IL 60657-1108
Phone (312) 544-0200

Medicare participation

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

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
O20080502000458 IL Part B Supplier - Clinic/Group Practice 4880773753 Receives reassigned benefits from 1 practitioner
Practice locations: Chicago, IL

National Provider Directory

National Provider Directory
Tax ID family
1 On 1 MD PLLC2 organizations share this tax ID, including this one

Other organizations with this tax ID 1

Organizations that report the same tax identification number in the National Provider Directory.

Locations

3302 N Lincoln Ave
Unit 495
Chicago, IL 60657

Practitioners & affiliated clinicians

Practitioners 1

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.

NPI Registry JSON

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

{
    "created_epoch": "1207180800000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1767571200000",
    "number": "1578736112",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3302 N LINCOLN AVE UNIT 495",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606571108",
            "telephone_number": "312-544-0200",
            "fax_number": "312-544-0299"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1828 W WEBSTER AVE STE 450",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606142916",
            "telephone_number": "312-544-0200",
            "fax_number": "312-544-0299"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "1 ON 1 MD PLLC",
        "organizational_subpart": "NO",
        "enumeration_date": "2008-04-03",
        "last_updated": "2026-01-05",
        "certification_date": "2026-01-05",
        "status": "A",
        "authorized_official_last_name": "HUANG",
        "authorized_official_first_name": "LINDA",
        "authorized_official_title_or_position": "MEDICAL DIRECTOR",
        "authorized_official_telephone_number": "312-544-0200",
        "authorized_official_credential": "MD"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "NU",
            "license": null,
            "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 Jan 5, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.