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

Jason E Knuffman, MD

Individual provider General Practice Physician · NPI 1184690109

Jason E Knuffman, MD practises Allergy/Immunology in Quincy, Illinois. Graduated from Saint Louis University School of Medicine in 2001, 25 years ago. Practices with Quincy Physicians and Surgeons Clinic, PLLC, a 231-clinician group and accepts Medicare assignment. Licensed in Illinois and Wisconsin.

Years since qualifying
25
Trained at
Saint Louis University School of Medicine
Licensed in
IL, WI
In the registry since
2006
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1025 Maine St
Quincy, IL 62301-4038 Not confirmed with CMS for 13 years — call before visiting
Phone: (217) 222-6550
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Allergy & Immunology (Internal Medicine) Physician (primary) Taxonomy 207RA0201X · Licence 036133088 (IL)
General Practice Physician Taxonomy 208D00000X · Licence 44933 (WI)
Allergy & Immunology (Internal Medicine) Physician Taxonomy 207RA0201X · Licence 44933 (WI)

Record details

NPI number1184690109
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 28, 2006
Last updated in NPPESOctober 8, 2013

Medicare enrollment

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

Medicare specialtyALLERGY/IMMUNOLOGY
Medical schoolSAINT LOUIS UNIVERSITY SCHOOL OF MEDICINE
Graduated 2001 (25 years in practice)
Group practice Quincy Physicians And Surgeons Clinic, Pllc — 231 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 patients282
Services billed 2,821 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 $502 22 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.

Colleagues at Quincy Physicians and Surgeons Clinic, PLLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 231 clinicians in the practice; 12 are shown here.

Other providers in Quincy