NANCY JEANNE WILLIAMS M.D.
NPI 1982637302
Hospitalist in Saint Louis, MO
About Nancy Jeanne Williams M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
NANCY JEANNE WILLIAMS M.D. (NPI 1982637302) is an individual hospitalist provider in Saint Louis, Missouri, licensed in Missouri (R8H60) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS, is affiliated with Missouri Baptist Medical Center, and is a graduate of University Of Kansas School Of Med (kc/wich/sal) (1987).
NPPES Registry Identity
Specialties & Licenses 2
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
Nancy Jeanne Williams M.d. 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 Nancy 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
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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Missouri Baptist Medical Center
Acute Care Hospitals · Town And Country, MOPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 63131 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 63131
SAINT LOUIS, MO 63131
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 Nancy Williams's NPI number?
The NPI number for Nancy Williams is 1982637302. It was assigned to this individual provider in the NPPES registry on July 9, 2006.
Where is Nancy Williams located?
Nancy Williams practices at 3015 N Ballas Rd, Saint Louis, MO 63131. The listed phone number is (314) 996-5772.
What is Nancy Williams's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Nancy Williams enrolled in Medicare?
Yes. Nancy 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 Nancy Williams's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nancy 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 Nancy Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Nancy Williams affiliated with any hospitals?
According to CMS data, Nancy Williams is affiliated with Missouri Baptist Medical Center.
When was this NPI record last updated?
The NPPES record for Nancy Williams was last updated on March 31, 2021. 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.
# Nancy Jeanne Williams, M.D. · NPI 1982637302
Hospitalist physician in Saint Louis, Missouri. Individual provider, active in the CMS NPPES registry since July 9, 2006.
## Identity
- **NPI:** 1982637302 (Entity type: Individual)
- **Enumerated:** July 9, 2006
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** R8H60 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 3015 N BALLAS RD, Saint Louis, MO 63131-2329
- **Phone:** (314) 996-5772 · **Fax:** (314) 996-7691
## 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:** University Of Kansas School Of Med, class of 1987
## Record status
- **NPPES last updated:** March 31, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1982637302) · Data from the CMS NPPES public registry.