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MR. JOHN KEVIN BASE MD
NPI 1881425650
Internal Medicine in Chicago, IL

Active since August 12, 2024PECOS Enrolled
1950 W POLK ST FL 6, CHICAGO, IL 60612(312) 864-7311 Get Directions Write a Review

NPPES record last updated: April 10, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Apr 10, 2025, Aug 12, 2024 (2 updates tracked since 2024).

About Mr. John Kevin Base Md NPPES

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

MR. JOHN KEVIN BASE MD (NPI 1881425650) is an individual internal medicine provider in Chicago, Illinois, licensed in Illinois (125.084932) and active in the NPI registry since August 2024. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1881425650
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameMR. JOHN KEVIN BASECredential: MD
Location Address1950 W POLK ST FL 6Chicago, IL 60612-3723
Mailing Address1950 W Polk St Fl 6Chicago, IL 60612-3723 · (312) 864-7311 · Fax (312) 847-0206
Phone(312) 864-7311
Sole ProprietorNo
Enumeration DateAugust 12, 2024
Last NPPES UpdateApril 10, 20252 updates tracked since enumeration
NPPES CertifiedApril 10, 2025
✔ NPI 1881425650 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in IL · 125.084932
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
1950 W POLK ST FL 6, Chicago, IL 60612
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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 (PECOS)

Mr. John Kevin Base 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.

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.

Other Providers at the Same Location NPPES 4

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

ELIZABETH KENT GOBBI MD
Internal Medicine (Hospice and Palliative Medicine)
1950 W POLK ST FL 6
CHICAGO, IL 60612
Cook County (312) 864-4462
DR. ROHAN ASHWINBHAI GAJJAR MD
Internal Medicine
1950 W POLK ST FL 6
CHICAGO, IL 60612
Cook County (312) 864-7311
CHARU TIBREWAL MD
Internal Medicine
1950 W POLK ST FL 6
CHICAGO, IL 60612
Cook County (312) 864-7311
DR. ANNE TERESE LAUX M.D.
Surgery (Hospice and Palliative Medicine)
1950 W POLK ST FL 6
CHICAGO, IL 60612
Cook County (312) 864-7345

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 Kevin Base's NPI number?

The NPI number for John Kevin Base is 1881425650. It was assigned to this individual provider in the NPPES registry on August 12, 2024.

Where is John Kevin Base located?

John Kevin Base practices at 1950 W Polk St Fl 6, Chicago, IL 60612. The listed phone number is (312) 864-7311.

What is John Kevin Base's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is John Kevin Base enrolled in Medicare?

Yes. John Kevin Base is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for John Kevin Base was last updated on April 10, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.