JAMES S WILLIAMS
NPI 1881569978
Nurse Practitioner - Acute Care in Westmont, IL

Q: What is James Williams's NPI number?

The NPI number for James Williams is 1881569978. It was assigned to this individual provider in the NPPES registry on October 8, 2025.

Q: What is James Williams's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Acute Care, with taxonomy code 363LA2100X.

Q: When was this NPI record last updated?

The NPPES record for James Williams was last updated on May 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.

Active since October 08, 2025PECOS EnrolledAccepts Medicare Assignment

700 E OGDEN AVE STE 202, WESTMONT, IL 60559(630) 789-9785 Get Directions Write a Review

NPPES record last updated: May 5, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: May 5, 2026, May 1, 2026, Oct 8, 2025 (3 updates tracked since 2025).

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About James S Williams NPPES

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

JAMES S WILLIAMS (NPI 1881569978) is an individual acute care provider in Westmont, Illinois, licensed in Illinois (209.033487) and active in the NPI registry since October 2025. He is enrolled in Medicare PECOS, is affiliated with Adventist La Grange Memorial Hospital, and is a graduate of Other (2025).

NPPES Registry Identity

NPI1881569978

Entity TypeIndividualMale

Primary Taxonomy363LA2100X

Provider Legal NameJAMES S WILLIAMS

Location Address700 E OGDEN AVE STE 202Westmont, IL 60559-1398

Mailing Address700 E Ogden Ave Ste 202Westmont, IL 60559-1398 · (630) 789-9785

Phone(630) 789-9785

Sole ProprietorNo

Medical School CMSOtherGraduated 2025

Enumeration DateOctober 8, 2025

Last NPPES UpdateMay 5, 20263 updates tracked since enumeration

NPPES CertifiedMay 5, 2026

✔ NPI 1881569978 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · Acute CarePhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363LA2100X

License✔ Licensed in IL · 209.033487

700 E OGDEN AVE STE 202, Westmont, IL 60559

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

James S Williams 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.

PECOS PAC ID8426523309

PECOS Enrollment IDI20260408001884

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.

Hospital Affiliations CMS Care Compare 3

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Adventist La Grange Memorial Hospital

Acute Care Hospitals · La Grange, IL

4/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number140065

Location5101 S Willow Springs RdLa Grange, IL 60525 · Cook County

Emergency services

Adventist Hinsdale Hospital

Acute Care Hospitals · Hinsdale, IL

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140122

Location120 North Oak StHinsdale, IL 60521 · Du Page County

Emergency services Birthing friendly

Uchicago Medicine Adventhealth Glenoaks

Acute Care Hospitals · Glendale Heights, IL

3/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number140292

Location701 Winthrop AvenueGlendale Heights, IL 60139 · Du Page County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60559 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

$93.02 typical visit price

range $59.81 – $181.38

Typical copayment $23.25 (range $14.95 – $45.34)

Most-billed visit code 99203

Established Patient

$105.07 typical visit price

range $19.15 – $147.12

Typical copayment $26.26 (range $4.78 – $36.78)

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 20

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

DR. BRANDON WILLIAM SEGREST DO

Internal Medicine