Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Michelle Denise McQuillan, DNP, FNP-BC

Individual provider Family Nurse Practitioner · NPI 1013533819

Michelle Denise McQuillan, DNP, FNP-BC is a Nurse Practitioner in O Fallon, Illinois. Graduated from Southern Illinois University School of Medicine in 2020, 6 years ago. Practices with Memorial Hospital, a 30-clinician group, works from 4 locations and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
6
Trained at
Southern Illinois University School of Medicine
Licensed in
IL
In the registry since
2020
Specialties on file
2
What do these letters mean?
DNP — Doctor of Nursing Practice
The highest clinical degree in nursing.
FNP-BC — Family Nurse Practitioner, Board Certified
A family nurse practitioner certified by the ANCC.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

321 Regency Park
O Fallon, IL 62269
Phone: (618) 416-7970
Fax: (618) 416-7971
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (3)

  • 9515 Holy Cross Ln Ste 6, Breese, IL 62230-3618 — (618) 526-8585
  • 1052 M L King Dr Ste 2, Centralia, IL 62801-3002 — (618) 436-5410
  • 213 Nw 10th St Ste D, Fairfield, IL 62837-1219 — (217) 329-3232

Specialties & licences

Nurse Practitioner (primary) Taxonomy 363L00000X · Licence 209.021778 (IL)
Family Nurse Practitioner Taxonomy 363LF0000X · Licence 209021778 (IL)

Record details

NPI number1013533819
Entity typeIndividual (Type 1)
GenderFemale
Credentials DNP , FNP-BC
Sole proprietorNo
NPI enumeratedJune 18, 2020
Last updated in NPPESDecember 13, 2024
Certification dateDecember 13, 2024

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNURSE PRACTITIONER
Medical schoolSOUTHERN ILLINOIS UNIVERSITY SCHOOL OF MEDICINE
Graduated 2020 (6 years in practice)
Group practice Memorial Hospital — 30 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients68
Services billed 112 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $1,740 82 payments · a meal or drink at a meeting or visit, not a fee
Education $86 1 payment · educational material or training, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Memorial Hospital

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 30 clinicians in the practice; 12 are shown here.

Other providers in O Fallon