Individual provider Active NPI

Lynn M Iwaniec

  • Internal Medicine Physician
  • Denver, CO
National Provider Identifier
1235190661
Registry record updated Jul 13, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
36226 Issued in CO
Practice address
2000 S Colorado Blvd
Annex BLDG, # 420
Denver, CO 80222-7900
Phone
(720) 524-1550
Fax
(720) 524-1551
NPI assigned
Mar 28, 2006
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 13, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X 36226 CO Primary

Addresses

Primary practice location

2000 S Colorado Blvd
Annex BLDG, # 420
Denver, CO 80222-7900

Mailing address

2000 S Colorado Blvd
Annex BLDG, # 420
Denver, CO 80222-7900
Phone (720) 524-1550

Other identifiers 1

IdentifierTypeStateIssuer
01362268MedicaidCO

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

Practice roles

OrganizationSpecialtyStatusNew patients
Inpatient Consultants of Colorado PC Internal Medicine Past Accepting new patients
Inpatient Consultants of Colorado, PC Internal Medicine Past Accepting new patients

Organizations & group practices 2

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.

NPI Registry JSON

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

{
    "created_epoch": "1143504000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1235190661",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2000 S COLORADO BLVD",
            "address_2": "ANNEX BLDG, # 420",
            "city": "DENVER",
            "state": "CO",
            "postal_code": "802227900",
            "telephone_number": "720-524-1550",
            "fax_number": "720-524-1551"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2000 S COLORADO BLVD",
            "address_2": "ANNEX BLDG, # 420",
            "city": "DENVER",
            "state": "CO",
            "postal_code": "802227900",
            "telephone_number": "720-524-1550",
            "fax_number": "720-524-1551"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "IWANIEC",
        "first_name": "LYNN",
        "middle_name": "M",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-03-28",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CO",
            "license": "36226",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "01362268",
            "state": "CO"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Denver, CO

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 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.