DR. NIKITA LAVON WILLIAMSON MD
NPI 1265464382
Pediatrics in Oak Lawn, IL
About Dr. Nikita Lavon Williamson Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. NIKITA LAVON WILLIAMSON MD (NPI 1265464382) is an individual pediatrics provider in Oak Lawn, Illinois, licensed in Illinois (036107711) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS, maintains 3 additional practice locations, and is a graduate of Meharry Medical College School Of Medicine (1998).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 3
Other Identifiers 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
Dr. Nikita Lavon Williamson Md 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 Reassignments
2Medicare enrollment records show Nikita Williamson reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Oak Lawn, IL 60453
- Reassigned Medicare billing, Illinois enrollment
- Medicare enrollment name: Advocate Health And Hospitals Corporation
- 4,870 clinicians in this Medicare group
Milwaukee, WI 53215
- Reassigned Medicare billing, Wisconsin enrollment
- 4,609 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 60453 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 11
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
OAK LAWN, IL 60453
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 Nikita Williamson's NPI number?
The NPI number for Nikita Williamson is 1265464382. It was assigned to this individual provider in the NPPES registry on July 7, 2006.
Where is Nikita Williamson located?
Nikita Williamson practices at 4440 W 95th St Ste 2177H, Oak Lawn, IL 60453. The listed phone number is (708) 684-5341.
What is Nikita Williamson's specialty?
The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.
Is Nikita Williamson enrolled in Medicare?
Yes. Nikita Williamson 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 organizations bill Medicare for Nikita Williamson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nikita Williamson reassigns Medicare benefits to 2 organizations: Advocate Health & Hospitals Corporation (Oak Lawn, IL) and Aurora Medical Group, Inc. (Milwaukee, WI). 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 Nikita Williamson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Nikita Williamson accept?
Health plans from CareSource (Common Ground Healthcare), Network Health and Quartz list Nikita Williamson 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 Nikita Williamson was last updated on February 26, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.
# Dr. Nikita Lavon Williamson, MD · NPI 1265464382
Pediatrics physician in Oak Lawn, Illinois. Individual provider, active in the CMS NPPES registry since July 7, 2006.
## Identity
- **NPI:** 1265464382 (Entity type: Individual)
- **Enumerated:** July 7, 2006
- **Primary specialty:** Pediatrics · taxonomy 208000000X
- **State license:** 036107711 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 4440 W 95TH ST STE 2177H, Oak Lawn, IL 60453-2600
- **Phone:** (708) 684-5341
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Advocate Health & Hospitals Corporation (NPI 1912936014, Oak Lawn, IL); Aurora Medical Group, Inc. (NPI 1427271378, Milwaukee, WI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Meharry Medical College School Of Medicine, class of 1998
## Record status
- **NPPES last updated:** February 26, 2026
- **Other identifiers:** Medicaid 100043688 (WI)
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Source: [NPI Profile](https://npiprofile.com/npi/1265464382) · Data from the CMS NPPES public registry.