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Dr. Jason Arnold , MD

Internal Medicine β€’ Chicago, IL

Active NPI 1912371725 Individual Practitioner Male Practitioner
Practice location in NPPES

251 E Huron St
Chicago, IL 606112908

Call 3129262000 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

251 E Huron St

Chicago, IL 606112908

Telephone 3129262000
Organization at the Same NPPES Address or Phone
Northwestern Radiology Oncology Assoc Facility NPI 1831164052

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

Other Listings in Public Data

NPPES lists 1 additional practice-address record in Chicago, IL. See the list

Source: CMS NPPES NPI Registry, practice location records; release date unavailable.

Listings do not confirm current availability, employment or a shared ownership network.

30-day fills

34 standardized 30-day fills in 2021

CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.

What this does not show: 30-day fills

It is not a count of patients and not a measure of quality.

Part D drug cost

$176 in 2021

The total cost of these prescriptions in 2021, paid by Medicare drug plans, patients and other payers together.

What this does not show: Part D drug cost

A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.

Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2021.

Industry payments (Open Payments)

No Open Payments records are listed for this clinician for 2019–2025.

Guide: How to read an Open Payments record

NPI first issued

2015

The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.

What this does not show: NPI first issued

NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.

Source: CMS NPPES NPI Registry.

Medicare assignment not listed

CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.

Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.

Source: CMS Doctors and Clinicians; Medicare.gov, β€œDoes your provider accept Medicare as full payment?”

Guide: What Medicare assignment means

No telehealth indicator

CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.

Guide: How Medicare covers telehealth

Enrolled in Medicare (PECOS)

Dr. Arnold has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.

It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What Medicare enrollment (PECOS) means

Can order Medicare-covered services

CMS lists Dr. Arnold as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.

What this does not show: Can order Medicare-covered services

It does not mean the clinician offers these services directly.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What ordering and referring status means

Compared with the same specialty in Chicago and Illinois

Billing and prescribing volume is not a quality rating.

Medicare Part D

Comparisons use 2024 data. The latest CMS data for Dr. Arnold are from 2021.

2,870 active clinicians are listed under Internal Medicine with a practice address in Chicago, IL (7,245 in Illinois).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Chicago

13.3% of these 2,870 clinicians have the CMS telehealth indicator.

38.5% of these 2,870 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Medicare Part D Prescribers (2021), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo Β· Report an error.

Medicare Part D Prescribing Profile & Medications

Medicare Part D prescriptions filled, including refills, in 2021.

CMS Part D Β· Data Year 2021
Brand Name Generic Name Prescriptions Day Supply Total Cost Patients
Atorvastatin Calcium Atorvastatin Calcium 12 1,020 $176.36 β€”

Source: CMS Part D by Provider and Drug, 2021; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits

Specialties & License Numbers Reported to NPPES

Self-certified to NPPES: 2026-06-03
Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

License # reported to NPPES IL 125.073573

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.

Internal Medicine - Pulmonary Disease

NUCC Taxonomy Code: 207RP1001X

License # reported to NPPES IL 036159512

An internist who treats diseases of the lungs and airways. The pulmonologist diagnoses and treats cancer, pneumonia, pleurisy, asthma, occupational and environmental diseases, bronchitis, sleep disorders, emphysema and other complex disorders of the lungs.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Illinois Department of Financial and Professional Regulation.
Look Up on State Board Site

Medicare (PECOS) Enrollment & Ordering Eligibility

Source: CMS PECOS
Medicare FFS Enrollment Status Medicare Enrollment on File
CMS Provider Specialty

PRACTITIONER - PULMONARY DISEASE

Medicare Enrollment ID

I20260617000337

Enrollment State Jurisdiction

IL

PECOS Control ID

1153664560

Medicare Order & Referring Eligibility
Clinical Lab & Imaging (Part B) Eligible
Durable Medical Equipment (DME) Eligible
Home Health Agency (HHA) Eligible
Power Mobility Devices (PMD) Eligible

Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.

Secondary Practice Locations

676 N Saint Clair St Ste 2100

Chicago, IL 606112993

Phone: 3126951800

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

15 listed
Dr. Abdul Aadam , MD

Internal Medicine - Gastroenterology

NPI 1013038744

Doctor of Medicine (M.D.)

Dr. Carolyn Erickson , MD

Internal Medicine

NPI 1043572126

Doctor of Medicine (M.D.)

Lindsey Gradone , APN-ACNP

Nurse Practitioner - Acute Care

NPI 1033609508

APNACNP

Vanessa Kalinowska

Obstetrics & Gynecology

NPI 1013619691
Danielle Lam , APRN, CNP

Nurse Practitioner - Acute Care

NPI 1043636756

Advanced Practice Registered Nurse, Certified Nurse Practitioner

Dr. Samer Muallem , MD

Internal Medicine - Interventional Cardiology

NPI 1023549920

Doctor of Medicine (M.D.)

Career & Practice History Timeline

Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status

10 Historical Events
πŸ“
Updated Practice Location May 21, 2019

Registered at 251 E HURON ST, CHICAGO, IL 606112908 (Tel: 3129262000)

πŸ“
Updated Business Mailing Address May 21, 2019

Registered at 251 E HURON ST, CHICAGO, IL 606112908 (Tel: 3129262000)

πŸ‘€
Provider Name / Credentials Updated May 21, 2019

Recorded as JASON ARNOLD, MD

πŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) May 21, 2019

Internal Medicine (license number reported to NPPES: IL 125.073573)

βœ…
NPI Profile Active November 17, 2015

NPI status registered as active in NPPES database

πŸ“
Practice Location (Initial Record) November 17, 2015

Registered at 240 E HURON ST, SUITE 1-200, CHICAGO, IL 606112909 (Tel: 3125037975)

πŸ“
Business Mailing Address (Initial Record) November 17, 2015

Registered at 240 E HURON ST, SUITE 1-200, CHICAGO, IL 606112909 (Tel: 3125037975)

πŸ‘€
Provider Name / Credentials (Initial Record) November 17, 2015

Recorded as JASON ARNOLD

πŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) November 17, 2015

Student in an Organized Health Care Education/Training Program

🟒
Initial NPI Registration & Enumeration November 17, 2015

First registered as active Individual Practitioner in NPPES Database.

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NPI Administrative Meta

NPI Number: 1912371725
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: November 17, 2015
Last Update: June 03, 2026
Sole Proprietor: No

Other Internal Medicine Providers in Chicago

All Internal Medicine Providers in Chicago

Mailing Address

251 E Huron St

Chicago, IL 606112908

Phone: 3129262000

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.