TONYA WILLIAMS MD
NPI 1336368679
Pediatrics in Saint Louis, MO
About Tonya Williams Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
TONYA WILLIAMS MD (NPI 1336368679) is an individual pediatrics provider in Saint Louis, Missouri, licensed in Missouri (2007035574) and active in the NPI registry since April 2007. She is enrolled in Medicare PECOS.
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 (PECOS)
Tonya Williams Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Tonya Williams reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Saint Louis, MO 63117
- Reassigned Medicare billing, Missouri enrollment
- 741 clinicians in this Medicare group
Saint Louis, MO 63139
- Reassigned Medicare billing, Illinois and Missouri enrollments
- Medicare enrollment name: Ssm Cardinal Glennon Children's Hospital
- 76 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63104 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAINT LOUIS, MO 63104
SAINT LOUIS, MO 63104
ST.LOUIS, MO 63104
SAINT LOUIS, MO 63104
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 Tonya Williams's NPI number?
The NPI number for Tonya Williams is 1336368679. It was assigned to this individual provider in the NPPES registry on April 25, 2007.
Where is Tonya Williams located?
Tonya Williams practices at 1465 S Grand Blvd, Saint Louis, MO 63104. The listed phone number is (314) 268-4094.
What is Tonya Williams's specialty?
The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.
Is Tonya Williams enrolled in Medicare?
Yes. Tonya Williams is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Tonya Williams's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Tonya Williams reassigns Medicare benefits to 2 organizations: Ssm Health Care St. Louis (Saint Louis, MO) and Ssm Cardinal Glennon Childrens Hospital (Saint Louis, MO). Each 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 Tonya Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Tonya Williams accept?
Health plans from Anthem Blue Cross and Blue Shield list Tonya 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 Tonya Williams was last updated on December 5, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.
# Tonya Williams, MD · NPI 1336368679
Pediatrics physician in Saint Louis, Missouri. Individual provider, active in the CMS NPPES registry since April 25, 2007.
## Identity
- **NPI:** 1336368679 (Entity type: Individual)
- **Enumerated:** April 25, 2007
- **Primary specialty:** Pediatrics · taxonomy 208000000X
- **State license:** 2007035574 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 1465 S GRAND BLVD, Saint Louis, MO 63104-1003
- **Phone:** (314) 268-4094
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Ssm Health Care St. Louis (NPI 1366400855, Saint Louis, MO); Ssm Cardinal Glennon Childrens Hospital (NPI 1073568226, Saint Louis, MO) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** December 5, 2008
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Source: [NPI Profile](https://npiprofile.com/npi/1336368679) · Data from the CMS NPPES public registry.