Dr. James W McIlwaine, MD

Individual provider Otolaryngology Physician · NPI 1558352443

Dr. James W McIlwaine, MD practises Otolaryngology in Washington, Missouri. Graduated from University of Missouri, Columbia School of Medicine in 2000, 26 years ago. Practices with Mercy Clinic ENT LLC, a 12-clinician group and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying: 26
Trained at: University of Missouri, Columbia School of Medicine
Licensed in: MO
In the registry since: 2005

What do these letters mean?

MD — Doctor of Medicine: A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

901 Patients First Dr
Washington, MO 63090-4700 Not confirmed with CMS for 14 years — call before visiting
Phone: (636) 390-1570
Fax: (636) 390-1571

Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Otolaryngology Physician (primary)	Taxonomy 207Y00000X · Licence 2002002082 (MO)

Record details

NPI number	1558352443
Entity type	Individual (Type 1)
Gender	Male
Credentials	MD
Sole proprietor	No
NPI enumerated	October 31, 2005
Last updated in NPPES	January 23, 2012

Medicare enrollment

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

Medicare specialty	OTOLARYNGOLOGY
Medical school	UNIVERSITY OF MISSOURI, COLUMBIA SCHOOL OF MEDICINE
Graduated	2000 (26 years in practice)
Group practice	Mercy Clinic Ent Llc — 12 clinicians
Accepts Medicare assignment	Yes — accepts the Medicare-approved amount
Practice locations	3 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 patients	259
Services billed	490 a service is one billed item, such as a visit, a test or a procedure
Average patient age	72

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	$389 18 payments · a meal or drink at a meeting or visit, 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.

Mercy Hospital St Louis Hospital · Saint Louis, MO · listed as Mercy Hospitals East Communities Mercy Hospital St Louis
Mercy Hospital Washington Hospital · Washington, MO

Colleagues at Mercy Clinic ENT LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 12 clinicians in the practice; 9 are shown here.

James H Boyd, MD Plastic Surgery within the Head & Neck (Otolaryngology) Physician · Saint Louis, MO
Dr. Ethan Craig, MD Otolaryngology Physician · Saint Louis, MO
Kathleen E Hinson Meek, PA Physician Assistant · Saint Louis, MO
Amye Litherland, FNP Family Nurse Practitioner · Washington, MO
Dr. Jonathan Jerome Lusardi, MD Otolaryngology Physician · Bridgeton, MO
Dr. James Richard Martin, MD Otolaryngology Physician · Saint Louis, MO
Arya W Namin, MD Otolaryngology Physician · Saint Louis, MO
Robert Cory Proffer, PHYSICIANASSISTANT Medical Physician Assistant · Saint Louis, MO
Dr. Elizabeth Hahn Wick, MD Otolaryngology Physician · Miami, FL

Other providers in Washington

Mercy Clinic ENT LLC

Organization Otolaryngology Physician · NPI 1366705998

901 Patients First Dr, Washington, MO 63090-4700 · (636) 390-1570