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MRS. THERESA MCFADIN FNP-C
NPI 1831553908
Nurse Practitioner in Waterloo, IL

Active since April 05, 2016PECOS EnrolledAccepts Medicare Assignment
6100 ILLINI TRL, WATERLOO, IL 62298(618) 616-4782 Get Directions Write a Review

NPPES record last updated: March 31, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Mrs. Theresa Mcfadin Fnp-c NPPES

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

MRS. THERESA MCFADIN FNP-C (NPI 1831553908) is an individual nurse practitioner in Waterloo, Illinois, licensed in Missouri (2015040590) and active in the NPI registry since April 2016. She is enrolled in Medicare PECOS and is a graduate of Other (2015).

NPPES Registry Identity

NPI1831553908
Entity TypeIndividualFemale
Primary Taxonomy363L00000X
Provider Legal NameMRS. THERESA MCFADINCredential: FNP-C
Location Address6100 ILLINI TRLWaterloo, IL 62298-3547
Mailing Address6100 Illini TrlWaterloo, IL 62298-3547 · (618) 616-4782
Phone(618) 616-4782
Sole ProprietorNo
Medical School CMSOtherGraduated 2015
Enumeration DateApril 5, 2016
Last NPPES UpdateMarch 31, 2025
NPPES CertifiedMarch 31, 2025
✔ NPI 1831553908 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363L00000X
Licenses✔ Licensed in MO · 2015040590✔ Licensed in IL · 209013900
Definition
(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.
6100 ILLINI TRL, Waterloo, IL 62298
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mrs. Theresa Mcfadin Fnp-c 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 ID4688963812
PECOS Enrollment IDI20160511002076
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.

Medicare Billing Reassignments

4

Medicare enrollment records show Theresa Mcfadin reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Deaconess Illinois Specialty Clinic, Inc.
4.9 mi
Interventional Cardiology
509 HAMACHER ST
Waterloo, IL 62298
  • Reassigned Medicare billing, Illinois enrollment
  • 228 clinicians in this Medicare group
NPI 1336856806 (618) 939-4200
Emergency Services Midwest Sc
19 mi
Emergency Medicine
4500 MEMORIAL DR
Belleville, IL 62226
  • Reassigned Medicare billing, Illinois enrollment
  • 111 clinicians in this Medicare group
NPI 1174024806 (618) 257-5840
Ssm Health Care St Louis
27 mi
Emergency Medicine
1015 BOWLES AVENUE
Fenton, MO 63026
  • Reassigned Medicare billing, Missouri enrollment
  • 741 clinicians in this Medicare group
NPI 1275586174 (636) 496-2502
Ahs Il Medical Group LLC
29 mi
Clinic/Center
2100 MADISON AVE
Granite City, IL 62040
  • Reassigned Medicare billing, Illinois enrollment
  • 107 clinicians in this Medicare group
NPI 1659098101 (818) 666-0602

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 3

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.

Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
118 services117 patients
Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
69 services69 patients
Emergency department visit with low level of medical decision making 99283
An emergency department visit for a problem of moderate severity involves immediate medical attention for issues like minor fractures, burns, or high fever. The healthcare team will assess your condition, provide necessary treatment, and may suggest further tests or admission if required.
28 services28 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 62298 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
$88.44 typical visit price
range $56.28 – $173.35
Typical copayment $22.11 (range $14.07 – $43.33)
Most-billed visit code 99203
Established Patient
$99.71 typical visit price
range $17.51 – $139.99
Typical copayment $24.92 (range $4.37 – $34.99)
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.

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 Theresa Mcfadin's NPI number?

The NPI number for Theresa Mcfadin is 1831553908. It was assigned to this individual provider in the NPPES registry on April 5, 2016.

Where is Theresa Mcfadin located?

Theresa Mcfadin practices at 6100 Illini Trl, Waterloo, IL 62298. The listed phone number is (618) 616-4782.

What is Theresa Mcfadin's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Is Theresa Mcfadin enrolled in Medicare?

Yes. Theresa Mcfadin 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.

Which organizations bill Medicare for Theresa Mcfadin's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Theresa Mcfadin reassigns Medicare benefits to 4 organizations: Deaconess Illinois Specialty Clinic, Inc. (Waterloo, IL), Emergency Services Midwest Sc (Belleville, IL), Ssm Health Care St Louis (Fenton, MO) and Ahs Il Medical Group LLC (Granite City, IL). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Theresa Mcfadin's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Theresa Mcfadin was last updated on March 31, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.