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OLATUNJI WALTER WILLIAMS MD
NPI 1952474710
Pediatrics - Pediatric Pulmonology in Indianapolis, IN

Active since November 17, 2006PECOS Enrolled
8402 HARCOURT RD STE 300, INDIANAPOLIS, IN 46260(317) 338-5288 Get Directions Write a Review

NPPES record last updated: June 2, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jun 2, 2026, Sep 8, 2025, May 18, 2022 and 1 more (4 updates tracked since 2016).

About Olatunji Walter Williams Md NPPES

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

OLATUNJI WALTER WILLIAMS MD (NPI 1952474710) is an individual pediatric pulmonology provider in Indianapolis, Indiana, licensed in Indiana (01069518A) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1952474710
Entity TypeIndividualMale
Primary Taxonomy2080P0214X
Provider Legal NameOLATUNJI WALTER WILLIAMSCredential: MD
Location Address8402 HARCOURT RD STE 300Indianapolis, IN 46260-2052
Mailing Address8402 Harcourt Rd Ste 300Indianapolis, IN 46260-2052
Phone(317) 338-5288
Sole ProprietorNo
Enumeration DateNovember 17, 2006
Last NPPES UpdateJune 2, 20264 updates tracked since enumeration
NPPES CertifiedJune 2, 2026
✔ NPI 1952474710 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatrics · Pediatric PulmonologyAllopathic & Osteopathic Physicians
Taxonomy Code2080P0214X
Licenses✔ Licensed in IN · 01069518A✔ Licensed in TX · M4984✔ Licensed in IL · 036165079
Definition
A pediatrician dedicated to the prevention and treatment of all respiratory diseases affecting infants, children and young adults. This specialist is knowledgeable about the growth and development of the lung, assessment of respiratory function in infants and children, and experienced in a variety of invasive and noninvasive diagnostic techniques.
Also ListedPediatricsTaxonomy 208000000X · License 01069518A (IN)
8402 HARCOURT RD STE 300, Indianapolis, IN 46260
Open in Google Maps ↗

Secondary Practice Locations 2

Location 110855 Virginia StCrown Point, IN 46307-0210 · Phone (888) 824-0200
Location 25841 S Maryland AveChicago, IL 60637-1443 · Phone (888) 824-0200

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter from Meridian, Ambetter Health and more.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Olatunji Walter Williams Md 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

5

Medicare enrollment records show Olatunji Williams reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

St Vincent Pediatric Subspecialties
0.1 mi
Pediatrics
2001 W 86TH ST
Indianapolis, IN 46260
  • Reassigned Medicare billing, Indiana enrollment
  • 294 clinicians in this Medicare group
NPI 1013967736 (317) 338-2273
University Of Illinois Speech And Hearing
109 mi
Speech-Language Pathologist
2001 S OAK ST, SUITE B
Champaign, IL 61820
  • Reassigned Medicare billing, Illinois enrollment
  • Medicare enrollment name: The Board Of Trustees Of The University Of Illinois
  • 2,127 clinicians in this Medicare group
NPI 1497923767 (217) 333-2205
The University Of Chicago Medical Center
149 mi
General Acute Care Hospital
5841 S MARYLAND AVE
Chicago, IL 60637
  • Reassigned Medicare billing, Illinois enrollment
  • 1,905 clinicians in this Medicare group
NPI 1033218128 (773) 702-1530
University Of Chicago
149 mi
Multi-Specialty
5841 S MARYLAND AVE, UCPG/MC 1099
Chicago, IL 60637
  • Reassigned Medicare billing, Illinois and Indiana enrollments
  • 2,237 clinicians in this Medicare group
NPI 1821048786 (773) 702-9200
Ut Lebonheur Pediatric Specialists, Inc.
390 mi
Pediatrics
848 ADAMS AVE.
Memphis, TN 38103
  • Reassigned Medicare billing, Tennessee enrollment
  • 582 clinicians in this Medicare group
NPI 1093024101 (901) 287-7337

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Other Providers at the Same Location NPPES 15

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

BENJAMIN COMMONS FNP
Nurse Practitioner (Family)
8402 HARCOURT RD STE 300
INDIANAPOLIS, IN 46260
Marion County (317) 338-3100
LUIS FERNANDO ESCOBAR MD
Medical Genetics (Clinical Genetics (M.D.))
8402 HARCOURT RD STE 300
INDIANAPOLIS, IN 46260
Marion County (317) 338-5288
MARGARET BURKE FNP-C
Nurse Practitioner (Pediatrics)
8402 HARCOURT RD STE 300
INDIANAPOLIS, IN 46260
Marion County (317) 338-5288
CYNTHIA HAAG
Genetic Counselor, MS
8402 HARCOURT RD STE 300
INDIANAPOLIS, IN 46260
Marion County (317) 338-5243
AUDREY SAMUELSON MS, CGC
Genetic Counselor, MS
8402 HARCOURT RD STE 300
INDIANAPOLIS, IN 46260
Marion County (317) 338-8983
AFIFA ELIZABETH IRANI LCGC, MS, MPH
Genetic Counselor, MS
8402 HARCOURT RD STE 300
INDIANAPOLIS, IN 46260
Marion County (317) 338-5251
MRS. JORI DANAE MATUSHEK NP
Nurse Practitioner (Pediatrics)
8402 HARCOURT RD STE 300
INDIANAPOLIS, IN 46260
Marion County (317) 388-3100
MS. CAROLINE EMILY ESTES
Genetic Counselor, MS
8402 HARCOURT RD STE 300
INDIANAPOLIS, IN 46260
Marion County (812) 317-5288

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 Olatunji Williams's NPI number?

The NPI number for Olatunji Williams is 1952474710. It was assigned to this individual provider in the NPPES registry on November 17, 2006.

Where is Olatunji Williams located?

Olatunji Williams practices at 8402 Harcourt Rd Ste 300, Indianapolis, IN 46260. The listed phone number is (317) 338-5288.

What is Olatunji Williams's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Pulmonology, with taxonomy code 2080P0214X.

Is Olatunji Williams enrolled in Medicare?

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

Which organizations bill Medicare for Olatunji Williams's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Olatunji Williams reassigns Medicare benefits to 5 organizations: St Vincent Pediatric Subspecialties (Indianapolis, IN), University Of Illinois Speech And Hearing (Champaign, IL), The University Of Chicago Medical Center (Chicago, IL), University Of Chicago (Chicago, IL) and Ut Lebonheur Pediatric Specialists, Inc. (Memphis, TN). 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 Olatunji Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Olatunji Williams accept?

Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Anthem Blue Cross and Blue Shield and BlueCross BlueShield of Tennessee and 2 other insurers list Olatunji 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 Olatunji Williams was last updated on June 2, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.