DR. JOHN PIERRE CASE M.D.
NPI 1104840123
Internal Medicine - Rheumatology in Chicago, IL

Q: What is John Case's NPI number?

The NPI number for John Case is 1104840123. It was assigned to this individual provider in the NPPES registry on July 26, 2006.

Q: What is John Case's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

Q: When was this NPI record last updated?

The NPPES record for John Case was last updated on April 22, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years 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 July 26, 2006PECOS EnrolledAccepts Medicare Assignment

84.57/100

CMS Quality Rating

1901 W HARRISON ST, CHICAGO, IL 60612(312) 864-7268(312) 864-9494 Get Directions Write a Review

NPPES record last updated: April 22, 2021. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Apr 22, 2021, Jul 14, 2020 (2 updates tracked since 2020).

On this page

About Dr. John Pierre Case M.d. NPPES

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

DR. JOHN PIERRE CASE M.D. (NPI 1104840123) is an individual rheumatology provider in Chicago, Illinois, licensed in Illinois (036-073570) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with John H Stroger Jr Hospital, and is a graduate of Tufts University School Of Medicine (1985).

NPPES Registry Identity

NPI1104840123

Entity TypeIndividualMale

Primary Taxonomy207RR0500X

Provider Legal NameDR. JOHN PIERRE CASECredential: M.D.

Location Address1901 W HARRISON STChicago, IL 60612-3714

Mailing Address1901 W Harrison StChicago, IL 60612-3714 · (312) 864-7268 · Fax (312) 864-9494

Phone(312) 864-7268

Fax(312) 864-9494

Sole ProprietorYes

Medical School CMSTufts University School Of MedicineGraduated 1985

Enumeration DateJuly 26, 2006

Last NPPES UpdateApril 22, 20212 updates tracked since enumeration

NPPES CertifiedApril 22, 2021

✔ NPI 1104840123 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · RheumatologyAllopathic & Osteopathic Physicians

Taxonomy Code207RR0500X

License✔ Licensed in IL · 036-073570

Definition

An internist who treats diseases of joints, muscle, bones and tendons. This specialist diagnoses and treats arthritis, back pain, muscle strains, common athletic injuries and collagen diseases.

Also ListedInternal MedicineTaxonomy 207R00000X · License 036-073570 (IL)

1901 W HARRISON ST, Chicago, IL 60612

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Home State Health, Ambetter Health, Ambetter Health of Delaware.Insurance ›

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

Dr. John Pierre Case M.d. 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 ID2163603275

PECOS Enrollment IDI20110223000243

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.

Areas of Expertise CMS Part B claims 2

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

202 services92 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

13 services12 patients

Hospital Affiliations CMS Care Compare

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

John H Stroger Jr Hospital

Acute Care Hospitals · Chicago, IL

2/5 CMS rating

OwnershipGovernment - Local

CMS Certification Number140124

Location1901 W Harrison StChicago, IL 60612 · Cook County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60612 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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

84.57/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

60.25

Promoting Interoperability

100

Improvement Activities

Cost

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.

JOHANNA WEFES-POTTER

Emergency Medicine

1901 W HARRISON ST
CHICAGO, IL 60612

Cook County (847) 843-2000

ARON BERHANU GUDETTA MD

Internal Medicine

1901 W HARRISON ST
CHICAGO, IL 60612

Cook County (312) 864-6000

DR. LIGAYA VILLAFRANCA MARASIGAN M.D.

Obstetrics & Gynecology (Gynecology)

1901 W HARRISON ST
CHICAG, IL 60612

Cook County (312) 864-5901

TIN TIN THOMAS M.D.

Internal Medicine

1901 W HARRISON ST
CHICAGO, IL 60612

Cook County (312) 864-6000

COOK COUNTY

Pharmacy (Clinic Pharmacy)

1901 W HARRISON ST
CHICAGO, IL 60612

Cook County (312) 864-6189

HELEN ELIZABETH STRAUS MD

Emergency Medicine

1901 W HARRISON ST
CHICAGO, IL 60612

Cook County (312) 864-0060

MR. GLEN DERRICK TRAMMELL PA-C

Physician Assistant

1901 W HARRISON ST
CHICAGO, IL 60612

Cook County (773) 869-7488

JOHN H STROGER, JR. HOSPITAL OF COOK COUNTY

General Acute Care Hospital

1901 W HARRISON ST
CHICAGO, IL 60612

Cook County (773) 319-2085

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 John Case's NPI number?

The NPI number for John Case is 1104840123. It was assigned to this individual provider in the NPPES registry on July 26, 2006.

Where is John Case located?

John Case practices at 1901 W Harrison St, Chicago, IL 60612. The listed phone number is (312) 864-7268.

What is John Case's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

Is John Case enrolled in Medicare?

Yes. John Case 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.

What insurance does John Case accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and Ambetter from Home State Health list John Case 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.

Is John Case affiliated with any hospitals?

According to CMS data, John Case is affiliated with John H Stroger Jr Hospital.

When was this NPI record last updated?

The NPPES record for John Case was last updated on April 22, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years 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.