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Madeline C Duffner , PA-C

Physician Assistant β€’ Chicago, IL

Active NPI 1851099832 Individual Practitioner Female Practitioner Accepts Medicare assignment
Practice location in NPPES

251 E Huron St Ste 12-736
Chicago, IL 606112908

Call 3129262912 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 Ste 12-736

Chicago, IL 606112908

Telephone 3129262912
Fax 3129267404
Other Listings in Public Data

CMS Doctors and Clinicians lists 1 group name: Endeavor Health Medical Group. See the list

Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.

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

Medicare Profile & Education

Source: CMS Doctors and Clinicians National Downloadable File

Graduation Year

2023

30-day fills

149 standardized 30-day fills in 2024

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

$3,148 in 2024

The total cost of these prescriptions in 2024, 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, 2024.

Open Payments general payments, program year 2025

All general payments: $224.22 across 3 records.

By nature of payment

  • Food and Beverage: $224.22 across 3 records.

Reporting-company totals

  • Bristol Myers Squibb Company: $113.35 across 1 record.
  • Intera Oncology, Inc: $85.74 across 1 record.
  • Genentech, Inc.: $25.13 across 1 record.

A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.

See the full table

Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).

Guide: How to read an Open Payments record

Years since graduation

3 years (graduated 2023)

CMS Doctors and Clinicians data list 2023 as the year this clinician finished professional school.

What this does not show: Years since graduation

It is not the number of years in practice, and more years does not mean better care.

Source: CMS Doctors and Clinicians National Downloadable File.

NPI first issued

2023

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.

Accepts Medicare assignment

CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.

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)

Madeline Duffner 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 Madeline Duffner 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 prescriptions

Close to the middle for clinicians listed under Physician Assistant in Chicago, IL (2024, 656 clinicians with data). Median for this group: 116. Middle half: 40 to 337.

Close to the middle for clinicians listed under Physician Assistant in Illinois (2024, 2,676 clinicians with data). Median for this group: 201. Middle half: 67 to 589.

Part D drug cost

Close to the middle for clinicians listed under Physician Assistant in Chicago, IL (2024, 656 clinicians with data). Median for this group: $1,997. Middle half: $321 to $33,433.

Close to the middle for clinicians listed under Physician Assistant in Illinois (2024, 2,676 clinicians with data). Median for this group: $2,942. Middle half: $542 to $47,207.

1,503 active clinicians are listed under Physician Assistant with a practice address in Chicago, IL (5,090 in Illinois).

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

Telehealth indicator in Chicago

16.9% of these 1,503 clinicians have the CMS telehealth indicator.

61.7% of these 1,503 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo Β· Report an error.

Pharma & Medical Device Financial Disclosures

Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments

Open Payments Β· Program Year 2025
Disclosure Year:

Program year 2025 (payments made January 1 – December 31, 2025): fewer than 11 records totaling $224.22.

Manufacturer Payment Nature Product Type Amount ($)
Bristol Myers Squibb Company
Food and Beverage
Cash or cash equivalent
OPDIVO General $113.35
Intera Oncology, Inc
Food and Beverage
In-kind items and services
INTERA General $85.74
Genentech, Inc.
Food and Beverage
In-kind items and services
Columvi General $25.13

Source: CMS Open Payments, program year 2025, released June 30, 2026.

Medicare Part D Prescribing Profile & Medications

Medicare Part D prescriptions filled, including refills, in 2024.

CMS Part D Β· Data Year 2024
Brand Name Generic Name Prescriptions Day Supply Total Cost Patients
Ondansetron Odt Ondansetron 49 198 $287.38 46
Tramadol Hcl Tramadol Hcl 36 166 $39.07 29
Oxycodone Hcl Oxycodone Hcl 26 105 $71.60 22
Enoxaparin Sodium Enoxaparin Sodium 23 503 $2,667.96 23
Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen 15 54 $81.65 13

Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits

Specialties & License Numbers Reported to NPPES

Self-certified to NPPES: 2026-08-18
Physician Assistant Primary Specialty

NUCC Taxonomy Code: 363A00000X

License # reported to NPPES IL 085009823

A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.

Physician Assistant - Surgical

NUCC Taxonomy Code: 363AS0400X

License # reported to NPPES IL 085009823
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 - PHYSICIAN ASSISTANT

Medicare Enrollment ID

I20230918001272

Enrollment State Jurisdiction

IL

PECOS Control ID

7416311915

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.

Medicare Group Practice Enrollments

Source: CMS Doctors and Clinicians National Downloadable File

Endeavor Health Medical Group

120 Spalding Dr, Naperville, IL 605406508

Phone: 6306466020

Endeavor Health Medical Group

801 S Washington St, Naperville, IL 605407430

Phone: 6305275197

Endeavor Health Medical Group

801 S Washington St, Naperville, IL 605407430

Phone: 6305275359

Endeavor Health Medical Group

2650 Ridge Ave, Evanston, IL 602011700

Clinicians Sharing This Practice Address or Phone

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

2 listed
Soo Howell , APN

Nurse Practitioner - Acute Care

NPI 1528347937

Advanced Practice Nurse

Sarah Suma , MS, ACAGNP-BC

Nurse Practitioner

NPI 1972010031

Master of Science, ACAGNPBC

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 August 18, 2026

Registered at 251 E HURON ST STE 12-736, CHICAGO, IL 606112908 (Tel: 3129262912)

πŸ“
Updated Business Mailing Address August 18, 2026

Registered at 251 E HURON ST STE 12-736, CHICAGO, IL 606112908 (Tel: 3129262912)

πŸ‘€
Provider Name / Credentials Updated March 20, 2026

Recorded as MADELINE DUFFNER, PA-C

πŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) March 20, 2026

Physician Assistant (license number reported to NPPES: IL 085009823)

βœ…
NPI Profile Active February 20, 2023

NPI status registered as active in NPPES database

πŸ“
Practice Location (Initial Record) February 20, 2023

Registered at 507 NORTH 17TH STREET, MILWAUKEE, WI 53233 (Tel: 4142885688)

πŸ“
Business Mailing Address (Initial Record) February 20, 2023

Registered at 507 NORTH 17TH STREET, MILWAUKEE, WI 53233

πŸ‘€
Provider Name / Credentials (Initial Record) February 20, 2023

Recorded as MADELINE DUFFNER

πŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) February 20, 2023

Student in an Organized Health Care Education/Training Program

🟒
Initial NPI Registration & Enumeration February 20, 2023

First registered as active Individual Practitioner in NPPES Database.

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NPI Administrative Meta

NPI Number: 1851099832
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: February 20, 2023
Last Update: August 18, 2026
Sole Proprietor: Yes

Other Physician Assistants in Chicago

All Physician Assistants in Chicago

Mailing Address

251 E Huron St Ste 12-736

Chicago, IL 606112908

Phone: 3129262912

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.