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JILLIAN R. B. WILLIAMS FNP-BC
NPI 1831719384
Nurse Practitioner - Family in Saint Louis, MO

Active since April 24, 2020PECOS Enrolled
3721 S GRAND BLVD, SAINT LOUIS, MO 63118(314) 328-0144(314) 788-3021 Get Directions Write a Review

NPPES record last updated: May 7, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: May 7, 2025, Mar 31, 2025, Apr 28, 2021 and 1 more (4 updates tracked since 2020).

About Jillian R. B. Williams Fnp-bc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JILLIAN R. B. WILLIAMS FNP-BC (NPI 1831719384) is an individual family provider in Saint Louis, Missouri, licensed in Missouri (2024044282) and active in the NPI registry since April 2020. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1831719384
Entity TypeIndividualFemale
Primary Taxonomy363LF0000X
Provider Legal NameJILLIAN R. B. WILLIAMSCredential: FNP-BC
Location Address3721 S GRAND BLVDSaint Louis, MO 63118-3405
Mailing Address3721 S Grand BlvdSaint Louis, MO 63118-3405 · (314) 328-0144 · Fax (314) 788-3021
Phone(314) 328-0144
Fax(314) 788-3021
Sole ProprietorNo
Enumeration DateApril 24, 2020
Last NPPES UpdateMay 7, 20254 updates tracked since enumeration
NPPES CertifiedMay 7, 2025
✔ NPI 1831719384 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LF0000X
Licenses✔ Licensed in MO · 2024044282✔ Licensed in SC · 23838
3721 S GRAND BLVD, Saint Louis, MO 63118
Open in Google Maps ↗

Other Names 1

Former Name (1)Jillian R. B. Johnson

Other Identifiers 1

MedicaidNP6949SC

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Jillian R. B. Williams Fnp-bc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Jillian Williams reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Signify Health, LLC
538 mi
General Practice
4055 VALLEY VIEW LN STE 700
Dallas, TX 75244
  • Reassigned Medicare billing, Missouri enrollment
  • 412 clinicians in this Medicare group
NPI 1689158487 (469) 466-7007
Dedicated Missouri Holding, LLC
1,050 mi
Internal Medicine
1395 NW 167TH ST
Miami Gardens, FL 33169
  • Reassigned Medicare billing, Missouri enrollment
  • 24 clinicians in this Medicare group
NPI 1053958082 (305) 628-6117

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 63118 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$86.32 typical visit price
range $55.65 – $169.38
Typical copayment $21.58 (range $13.91 – $42.34)
Most-billed visit code 99203
Established Patient
$98.37 typical visit price
range $17.76 – $137.92
Typical copayment $24.59 (range $4.44 – $34.48)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 7

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

CHIA-YUAN HSU
Internal Medicine
3721 S GRAND BLVD
SAINT LOUIS, MO 63118
St. Louis City (314) 328-0144
DEDICATED MISSOURI HOLDING, LLC
Non-Pharmacy Dispensing Site
3721 S GRAND BLVD
SAINT LOUIS, MO 63118
St. Louis City (314) 328-0144
MR. PETER SHELBY GROCE NURSE PRACTITIONER
Nurse Practitioner (Adult Health)
3721 S GRAND BLVD
SAINT LOUIS, MO 63118
St. Louis City (314) 328-0144
DR. JASON KORT WOODY SR. DO
Family Medicine
3721 S GRAND BLVD
SAINT LOUIS, MO 63118
St. Louis City (314) 328-0144
JOSEPHINE LEE AGUHOB GLASER M.D.
Family Medicine
3721 S GRAND BLVD
SAINT LOUIS, MO 63118
St. Louis City (314) 328-0144
DR. ANDREA GRACE BROWN DO
Family Medicine
3721 S GRAND BLVD
SAINT LOUIS, MO 63118
St. Louis City (314) 328-0144
DR. TIMOTHY W HUTCHISON M.D.
Family Medicine
3721 S GRAND BLVD
SAINT LOUIS, MO 63118
St. Louis City (314) 328-0144

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 Jillian Williams's NPI number?

The NPI number for Jillian Williams is 1831719384. It was assigned to this individual provider in the NPPES registry on April 24, 2020. The provider is also known as Jillian R. B. Johnson.

Where is Jillian Williams located?

Jillian Williams practices at 3721 S Grand Blvd, Saint Louis, MO 63118. The listed phone number is (314) 328-0144.

What is Jillian Williams's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Is Jillian Williams enrolled in Medicare?

Yes. Jillian Williams is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Jillian Williams's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Jillian Williams reassigns Medicare benefits to 2 organizations: Signify Health, LLC (Dallas, TX) and Dedicated Missouri Holding, LLC (Miami Gardens, FL). 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 Jillian Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Jillian Williams accept?

Health plans from Anthem Blue Cross and Blue Shield list Jillian 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 Jillian Williams was last updated on May 7, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.