INTERNAL MEDICINE AT WINGHAVEN, LLC
NPI 1487924288
Internal Medicine in O Fallon, MO
About Internal Medicine At Winghaven, Llc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
INTERNAL MEDICINE AT WINGHAVEN, LLC (NPI 1487924288) is a healthcare organization registered as an internal medicine in O Fallon, Missouri and active in the NPI registry since January 2012. The organization lists Darren Haskell, Chief Medical Officer, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Group Practice 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Internal Medicine At Winghaven, Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
3Medicare enrollment records show 3 clinicians reassign Medicare billing to Internal Medicine At Winghaven, LLC, which bills Medicare for the services they deliver. Of these, 1 practice at this address and 2 within 10 miles. They are listed nearest first.
Clinicians, nearest first (3)
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
CLIA Laboratory Certificates CMS CLIA
Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.
Certificate of Waiver 26D0952700
Internal Medicine At Winghaven · O Fallon, MOFrequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Internal Medicine At Winghaven, LLC's NPI number?
The NPI number for Internal Medicine At Winghaven, LLC is 1487924288. It was assigned to this organization in the NPPES registry on January 10, 2012.
Where is Internal Medicine At Winghaven, LLC located?
Internal Medicine At Winghaven, LLC is located at 5551 Winghaven Blvd Ste 290, O Fallon, MO 63368. The listed phone number is (636) 695-2575.
What is Internal Medicine At Winghaven, LLC's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Internal Medicine At Winghaven, LLC enrolled in Medicare?
Yes. Internal Medicine At Winghaven, LLC is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Internal Medicine At Winghaven, LLC?
According to the CMS Revalidation Reassignment List (October 2026 release), 3 clinicians reassign their Medicare billing to Internal Medicine At Winghaven, LLC, in Internal Medicine, Nurse Practitioner and Rheumatology. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Of these, 1 practice at this address and 2 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
What insurance does Internal Medicine At Winghaven, LLC accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Arkansas Health & Wellness, Ambetter from Sunflower Health Plan and Ambetter of Oklahoma and 3 other insurers list Internal Medicine At Winghaven, LLC as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Internal Medicine At Winghaven, LLC was last updated on March 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Internal Medicine At Winghaven, Llc · NPI 1487924288
Internal Medicine organization in O Fallon, Missouri. Organization record, active in the CMS NPPES registry since January 10, 2012.
## Identity
- **NPI:** 1487924288 (Entity type: Organization)
- **Enumerated:** January 10, 2012
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **Organization subpart:** Yes (part of St. Lukes Medical Group)
- **Authorized official:** Darren Haskell, CHIEF MEDICAL OFFICER
## Practice location
- **Address:** 5551 WINGHAVEN BLVD STE 290, O Fallon, MO 63368-3629
- **Phone:** (636) 695-2575 · **Fax:** (314) 590-5938
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 3 clinicians in 3 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Internal Medicine (1), Nurse Practitioner (1), Rheumatology (1); 1 practice at this address and 2 within 10 miles · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** March 5, 2026
- **Other identifiers:** Medicaid 1487924288 (MO)
- **CLIA laboratory certificates:** 1 on file
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Source: [NPI Profile](https://npiprofile.com/npi/1487924288) · Data from the CMS NPPES public registry.