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Amy Marie Merkel , APRN-BC

Nurse Practitioner • Winfield, IL

Active NPI 1174340392 Individual Practitioner Female Practitioner Accepts Medicare assignment Telehealth (some services)
Practice location in NPPES

25 N Winfield Rd Ste 300
Winfield, IL 601901379

Call 6309338100 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

25 N Winfield Rd Ste 300

Winfield, IL 601901379

Telephone 6309338100
Fax 6308717527
Organization at the Same NPPES Address or Phone
Dupage Medical Group, Ltd. Facility NPI 1013152537

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

CMS Doctors and Clinicians lists 1 group name: Dupage Medical Group Ltd. 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

Medicare patients

36 people with Original Medicare in 2024

Different Original Medicare patients in 2024; counts below 11 are hidden; this does not show availability or quality.

Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.

Medicare-allowed amount

About $3,256 in 2024

The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.

What this does not show: Medicare-allowed amount

This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.

Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.

Paid by Medicare

About $2,594 in 2024

The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.

What this does not show: Paid by Medicare

This is not the clinician's income and not a measure of quality.

Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.

Open Payments general payments, program year 2025

All general payments: $940.74 across 29 records.

By nature of payment

  • Food and Beverage: $940.74 across 29 records.

Reporting-company totals (3 largest of 10)

  • Boehringer Ingelheim Pharmaceuticals, Inc.: $300.36 across 5 records.
  • SCPHARMACEUTICALS INC.: $179.55 across 3 records.
  • Novartis Pharmaceuticals Corporation: $119.18 across 4 records.

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

2024

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, “Does your provider accept Medicare as full payment?”

Guide: What Medicare assignment means

Telehealth (some services)

Recent Medicare claims show this clinician provided some services by telehealth, such as a video or phone visit.

What this does not show: Telehealth (some services)

It does not mean all services are offered by telehealth, or that telehealth is covered by your plan.

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)

Amy Merkel 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 Amy Merkel 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 Winfield and Illinois

Billing and prescribing volume is not a quality rating.

Medicare Part B services

Fewer Medicare Part B services than 80% of clinicians listed under Nurse Practitioner in Winfield, IL (2024, 56 clinicians with data). Median for this group: 287. Middle half: 98 to 509.

Fewer Medicare Part B services than 85% of clinicians listed under Nurse Practitioner in Illinois (2024, 2,561 clinicians with data). Median for this group: 261. Middle half: 101 to 526.

Medicare-allowed amount

A lower Medicare-allowed amount than 85% of clinicians listed under Nurse Practitioner in Winfield, IL (2024, 56 clinicians with data). Median for this group: $23,001. Middle half: $8,490 to $45,639.

A lower Medicare-allowed amount than 85% of clinicians listed under Nurse Practitioner in Illinois (2024, 2,561 clinicians with data). Median for this group: $21,010. Middle half: $8,652 to $42,014.

Paid by Medicare

A lower Medicare payment amount than 85% of clinicians listed under Nurse Practitioner in Winfield, IL (2024, 56 clinicians with data). Median for this group: $17,322. Middle half: $6,396 to $35,717.

A lower Medicare payment amount than 85% of clinicians listed under Nurse Practitioner in Illinois (2024, 2,561 clinicians with data). Median for this group: $15,151. Middle half: $6,396 to $31,322.

80 active clinicians are listed under Nurse Practitioner with a practice address in Winfield, IL (4,894 in Illinois).

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

Telehealth indicator in Winfield

43.8% of these 80 clinicians have the CMS telehealth indicator.

80% of these 80 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Medicare Physician & Other Practitioners (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 · 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 · Program Year 2025
Disclosure Year:

Program year 2025 (payments made January 1 – December 31, 2025): 29 records totaling $940.74.

Manufacturer Payment Nature Product Type Amount ($)
SCPHARMACEUTICALS INC.
Food and Beverage
In-kind items and services
FUROSCIX General $136.80
Boehringer Ingelheim Pharmaceuticals, Inc.
Food and Beverage
In-kind items and services
JARDIANCE General $124.60
Boehringer Ingelheim Pharmaceuticals, Inc.
Food and Beverage
In-kind items and services
JARDIANCE General $112.97
Novartis Pharmaceuticals Corporation
Food and Beverage
In-kind items and services
LEQVIO General $34.01
Novartis Pharmaceuticals Corporation
Food and Beverage
In-kind items and services
LEQVIO General $30.59
Boehringer Ingelheim Pharmaceuticals, Inc.
Food and Beverage
In-kind items and services
JARDIANCE General $29.97
AstraZeneca Pharmaceuticals LP
Food and Beverage
In-kind items and services
WAINUA General $29.07
Novartis Pharmaceuticals Corporation
Food and Beverage
In-kind items and services
LEQVIO General $28.06
Bayer Healthcare Pharmaceuticals Inc.
Food and Beverage
In-kind items and services
Kerendia General $27.02
Novartis Pharmaceuticals Corporation
Food and Beverage
In-kind items and services
LEQVIO General $26.52
AstraZeneca Pharmaceuticals LP
Food and Beverage
In-kind items and services
LOKELMA General $24.58
Mannkind Corporation
Food and Beverage
In-kind items and services
AFREZZA General $24.47
SCPHARMACEUTICALS INC.
Food and Beverage
In-kind items and services
FUROSCIX General $24.22
Merck Sharp & Dohme LLC
Food and Beverage
In-kind items and services
VERQUVO General $23.63
Esperion Therapeutics, Inc.
Food and Beverage
In-kind items and services
NEXLETOL General $23.55
Merck Sharp & Dohme LLC
Food and Beverage
In-kind items and services
VERQUVO General $21.02
AstraZeneca Pharmaceuticals LP
Food and Beverage
In-kind items and services
FARXIGA General $20.31
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)
Food and Beverage
Cash or cash equivalent
LifeVest General $19.69
Boehringer Ingelheim Pharmaceuticals, Inc.
Food and Beverage
In-kind items and services
JARDIANCE General $18.94
SCPHARMACEUTICALS INC.
Food and Beverage
In-kind items and services
FUROSCIX General $18.53
Merck Sharp & Dohme LLC
Food and Beverage
In-kind items and services
VERQUVO General $17.70
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)
Food and Beverage
Cash or cash equivalent
LifeVest General $17.50
AstraZeneca Pharmaceuticals LP
Food and Beverage
In-kind items and services
FARXIGA General $17.46
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)
Food and Beverage
Cash or cash equivalent
LifeVest General $16.07
Bristol Myers Squibb Company
Food and Beverage
Cash or cash equivalent
ELIQUIS General $15.90

(top 25 shown)

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

Performed Procedures & Service Volume

Services billed to Original Medicare Part B in 2024.

CMS Part B · Data Year 2024

CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.

HCPCS Code Services Patients Submitted Charge Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
26 23 $229.00 $112.13
G2211 Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's
24 21 $35.00 $14.20

Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits

Submitted charges are billed amounts, not a price quote for your visit.

Specialties & License Numbers Reported to NPPES

Self-certified to NPPES: 2024-10-02
Nurse Practitioner Primary Specialty

NUCC Taxonomy Code: 363L00000X

License # reported to NPPES IL 209-030604

(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.

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 - NURSE PRACTITIONER

Medicare Enrollment ID

I20241030003258

Enrollment State Jurisdiction

IL

PECOS Control ID

0042743916

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

Dupage Medical Group Ltd

25 N Winfield Rd, Winfield, IL 601901222

Phone: 6309338100

Clinicians Sharing This Practice Address or Phone

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

11 listed
Dr. James Carroll , MD

Internal Medicine - Cardiovascular Disease

NPI 1841272432

Doctor of Medicine (M.D.)

Dr. Eugene Greenstein , MD

Internal Medicine - Clinical Cardiac Electrophysiology

NPI 1487666087

Doctor of Medicine (M.D.)

NPI 1548604424

Registered Nurse, Master of Science in Nursing, Nurse Practitioner (Certified)

Breanne Klein , APN

Nurse Practitioner

NPI 1255165775

Advanced Practice Nurse

Dr. George Nijmeh , MD

Internal Medicine - Cardiovascular Disease

NPI 1366645046

Doctor of Medicine (M.D.)

Dr. Patrick O'leary , MD

Internal Medicine - Cardiovascular Disease

NPI 1942278890

Doctor of Medicine (M.D.)

Career & Practice History

NPI enumerated September 20, 2024.

No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from October 2024 to August 2026.

No reviews have been published yet. Leave a review.

NPI Administrative Meta

NPI Number: 1174340392
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: September 20, 2024
Last Update: October 02, 2024
Sole Proprietor: No

Other Nurse Practitioners in Winfield

All Nurse Practitioners in Winfield

Mailing Address

Po Box 713260

Chicago, IL 606771260

Phone: 6304699200

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.