RACHEL LEIGH WELLS FNP
NPI 1336444520
Nurse Practitioner - Family in O Fallon, MO
About Rachel Leigh Wells Fnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
RACHEL LEIGH WELLS FNP (NPI 1336444520) is an individual family provider in O Fallon, Missouri, licensed in Missouri (2018024316) and active in the NPI registry since January 2011. She is enrolled in Medicare PECOS, is affiliated with Mercy Hospital St Louis, and maintains a secondary practice location in Jefferson City.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Rachel Leigh Wells Fnp is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Rachel Wells reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Ballwin, MO 63011
- Reassigned Medicare billing, Missouri enrollment
- 744 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 5
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mercy Hospital St Louis
Acute Care Hospitals · Saint Louis, MOMercy Hospital Lincoln
Critical Access Hospitals · Troy, MOPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63368 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently 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 Rachel Wells's NPI number?
The NPI number for Rachel Wells is 1336444520. It was assigned to this individual provider in the NPPES registry on January 19, 2011.
Where is Rachel Wells located?
Rachel Wells practices at 2223 Technology Dr Ste 35, O Fallon, MO 63368. The listed phone number is (636) 561-5999.
What is Rachel Wells's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Rachel Wells enrolled in Medicare?
Yes. Rachel Wells is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Rachel Wells's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Rachel Wells reassigns Medicare benefits to Mercy Clinic East Communities (Ballwin, MO). The 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 Rachel Wells's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Rachel Wells 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 Rachel Wells 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.
Is Rachel Wells affiliated with any hospitals?
According to CMS data, Rachel Wells is affiliated with Mercy Hospital St Louis and Mercy Hospital Lincoln.
When was this NPI record last updated?
The NPPES record for Rachel Wells was last updated on December 13, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years 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.
# Rachel Leigh Wells, FNP · NPI 1336444520
Family physician in O Fallon, Missouri. Individual provider, active in the CMS NPPES registry since January 19, 2011.
## Identity
- **NPI:** 1336444520 (Entity type: Individual)
- **Enumerated:** January 19, 2011
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 2018024316 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 2223 TECHNOLOGY DR STE 35, O Fallon, MO 63368-7272
- **Phone:** (636) 561-5999
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Mercy Clinic East Communities (NPI 1700370061, Ballwin, MO), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2018
## Record status
- **NPPES last updated:** December 13, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1336444520) · Data from the CMS NPPES public registry.