Organization Active NPI

Internal Medicine at Winghaven, LLC

  • Internal Medicine Physician
  • O Fallon, MO
National Provider Identifier
1487924288
Registry record updated Mar 5, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
Legal business name
INTERNAL MEDICINE AT WINGHAVEN, LLC
Practice address
5551 Winghaven Blvd Ste 290
O Fallon, MO 63368-3629
Phone
(636) 695-2575
Fax
(314) 590-5938
NPI assigned
Jan 10, 2012
Organization subpart
Yes
Parent organization
ST. LUKES MEDICAL GROUPAs reported in NPPES

NPPES NPI Registry

Updated by the provider on Mar 5, 2026

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

Authorized official

Name
Darren Haskell, M.D.
Title
Chief Medical Officer
Phone
(314) 205-6444

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine PhysicianGroup: 193400000X SINGLE SPECIALTY GROUP 207R00000X Primary

Addresses

Primary practice location

5551 Winghaven Blvd Ste 290
O Fallon, MO 63368-3629

Mailing address

121 Saint Lukes Center Dr Ste 200
Chesterfield, MO 63017-3518
Phone (636) 685-7804

Other identifiers 1

IdentifierTypeStateIssuer
1487924288MedicaidMO

Medicare participation

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

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
O20120504000377 MO Part B Supplier - Clinic/Group Practice 6406018605 Receives reassigned benefits from 3 practitioners
Practice locations: O Fallon, MO

National Provider Directory

National Provider Directory
Tax ID family
Internal Medicine at Winghaven LLC2 organizations share this tax ID, including this one
Part of
St Lukes Medical Group

Other organizations with this tax ID 1

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

Member of 1

Organizations this organization is a member of, according to the National Provider Directory.

Locations

9103 Phoenix Village Pkwy
O Fallon, MO 63368
Phone (636) 265-2566

1049 Wolfrum Rd
Weldon Spring, MO 63304
Phone (314) 878-7333

Ownership & related parties

Parent organization (reported in NPPES) 1

This organization reports itself as a subpart in NPPES; the parent’s legal name matches this organization in the same state.

Practitioners & affiliated clinicians

Practitioners 3

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.

NPI Registry JSON

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

{
    "created_epoch": "1326153600000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1772668800000",
    "number": "1487924288",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "121 SAINT LUKES CENTER DR STE 200",
            "city": "CHESTERFIELD",
            "state": "MO",
            "postal_code": "630173518",
            "telephone_number": "636-685-7804",
            "fax_number": "314-576-2433"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "5551 WINGHAVEN BLVD STE 290",
            "city": "O FALLON",
            "state": "MO",
            "postal_code": "633683629",
            "telephone_number": "636-695-2575",
            "fax_number": "314-590-5938"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "INTERNAL MEDICINE AT WINGHAVEN, LLC",
        "organizational_subpart": "YES",
        "parent_organization_legal_business_name": "ST. LUKES MEDICAL GROUP",
        "enumeration_date": "2012-01-10",
        "last_updated": "2026-03-05",
        "certification_date": "2026-03-05",
        "status": "A",
        "authorized_official_last_name": "HASKELL",
        "authorized_official_first_name": "DARREN",
        "authorized_official_title_or_position": "CHIEF MEDICAL OFFICER",
        "authorized_official_telephone_number": "314-205-6444",
        "authorized_official_credential": "M.D."
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Internal Medicine",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "1487924288",
            "state": "MO"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in O Fallon, MO

Sources for this page

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