Active NPI
Internal Medicine at Winghaven, LLC
- Internal Medicine Physician
- O Fallon, MO
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Internal Medicine Physician
- 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 GROUP
NPPES NPI Registry
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) | Code | License | State | Primary |
|---|---|---|---|---|
| Internal Medicine Physician | 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
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 1487924288 | Medicaid | MO |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in MO
Enrollment records 1
National Provider Directory
National Provider Directory- Tax ID family
- Internal Medicine at Winghaven LLC
- 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.
-
- Primary Care Clinic/Center
- O Fallon, MO
- NPI 1033350541
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.
-
- Family Medicine Physician
- Chesterfield, MO
- NPI 1215308945
Practitioners & affiliated clinicians
Practitioners 3
Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.
-
- Family Nurse Practitioner
- O Fallon, MO
- NPI 1861928244
-
- Internal Medicine Physician
- O Fallon, MO
- NPI 1497729826
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.