DR. RACHAEL LYNN WILLIAMS DNP, APRN, WHNP-BC
NPI 1346950862
Nurse Practitioner in Saint Louis, MO
About Dr. Rachael Lynn Williams Dnp, Aprn, Whnp-bc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. RACHAEL LYNN WILLIAMS DNP, APRN, WHNP-BC (NPI 1346950862) is an individual nurse practitioner in Saint Louis, Missouri, licensed in Missouri (2022046126) and active in the NPI registry since November 2022. She is enrolled in Medicare PECOS and is a graduate of Other (2022).
NPPES Registry Identity
Specialties & Licenses
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
Dr. Rachael Lynn Williams Dnp, Aprn, Whnp-bc 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 Rachael Williams reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Saint Louis, MO 63141
- Reassigned Medicare billing, Missouri enrollment
- 611 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 3
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63124 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 4
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 Rachael Williams's NPI number?
The NPI number for Rachael Williams is 1346950862. It was assigned to this individual provider in the NPPES registry on November 28, 2022.
Where is Rachael Williams located?
Rachael Williams practices at 8888 Ladue Rd Ste 220, Saint Louis, MO 63124. The listed phone number is (314) 644-3336.
What is Rachael Williams's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Rachael Williams enrolled in Medicare?
Yes. Rachael Williams 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 Rachael Williams's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Rachael Williams reassigns Medicare benefits to Physician Groups Lc (Saint Louis, 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 Rachael Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Rachael Williams accept?
Health plans from UnitedHealthcare list Rachael Williams 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 Rachael Williams was last updated on May 9, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Dr. Rachael Lynn Williams, DNP, APRN, WHNP-BC · NPI 1346950862
Nurse Practitioner physician in Saint Louis, Missouri. Individual provider, active in the CMS NPPES registry since November 28, 2022.
## Identity
- **NPI:** 1346950862 (Entity type: Individual)
- **Enumerated:** November 28, 2022
- **Primary specialty:** Nurse Practitioner · taxonomy 363L00000X
- **State license:** 2022046126 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 8888 LADUE RD STE 220, Saint Louis, MO 63124-2056
- **Phone:** (314) 644-3336
## 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:** Physician Groups Lc (NPI 1285664268, Saint Louis, MO), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2022
## Record status
- **NPPES last updated:** May 9, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1346950862) · Data from the CMS NPPES public registry.