CLAIRE JUSTIN
NPI 1154065407
Hospitalist in Chicago, IL

Q: What is Claire Justin's NPI number?

The NPI number for Claire Justin is 1154065407. It was assigned to this individual provider in the NPPES registry on April 22, 2022.

Q: What is Claire Justin's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Q: When was this NPI record last updated?

The NPPES record for Claire Justin was last updated on July 15, 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 April 22, 2022PECOS Enrolled

225 E CHICAGO AVE, CHICAGO, IL 60611(312) 227-4000 Get Directions Write a Review

NPPES record last updated: July 15, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 15, 2026, Sep 8, 2025, Apr 22, 2022 (3 updates tracked since 2022).

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About Claire Justin NPPES

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

CLAIRE JUSTIN (NPI 1154065407) is an individual hospitalist provider in Chicago, Illinois, licensed in Illinois (036.179308) and active in the NPI registry since April 2022. She is enrolled in Medicare PECOS and maintains a secondary practice location in Walnut Creek.

NPPES Registry Identity

NPI1154065407

Entity TypeIndividualFemale

Primary Taxonomy208M00000X

Provider Legal NameCLAIRE JUSTIN

Location Address225 E CHICAGO AVEChicago, IL 60611-2991

Mailing Address225 E Chicago AveChicago, IL 60611-2991

Phone(312) 227-4000

Sole ProprietorNo

Enumeration DateApril 22, 2022

Last NPPES UpdateJuly 15, 20263 updates tracked since enumeration

NPPES CertifiedJuly 15, 2026

✔ NPI 1154065407 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians

Taxonomy Code208M00000X

Licenses✔ Licensed in IL · 036.179308✔ Licensed in CA · A190823

Definition

Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.

225 E CHICAGO AVE, Chicago, IL 60611

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Secondary Practice Location 1

Location 11425 S Main StWalnut Creek, CA 94596-5318 · Phone (925) 295-4000

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Claire Justin 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 Reassignment

Medicare enrollment records show Claire Justin reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Permanente Medical Group Inc

1,796 mi

Internal Medicine

7373 WEST LANE
Stockton, CA 95210

Reassigned Medicare billing, California enrollment
20,078 clinicians in this Medicare group

NPI 1548343510 (209) 476-2000

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 60611 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

$138.86 typical visit price

range $60.08 – $183.39

Typical copayment $34.71 (range $15.02 – $45.84)

Most-billed visit code 99204

Established Patient

$105.70 typical visit price

range $18.97 – $148.12

Typical copayment $26.42 (range $4.74 – $37.03)

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.

BESSEY ELIZABETH JOSE GEEVARGHESE DO

Pediatrics