Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Douglas N Sullivant, MD

Individual provider Neurology Physician · NPI 1467425603

Douglas N Sullivant, MD is a Neurology in Quincy, Illinois. Graduated from University of Missouri, Columbia School of Medicine in 1990, 36 years ago. Practices with Quincy Physicians and Surgeons Clinic, PLLC, a 231-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
36
Trained at
University of Missouri, Columbia School of Medicine
Licensed in
IL
In the registry since
2006
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
Phone: (217) 222-6550
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Neurology Physician (primary) Taxonomy 2084N0400X · Licence 036091522 (IL)

Record details

NPI number1467425603
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 8, 2006
Last updated in NPPESFebruary 12, 2010

Medicare enrollment

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

Medicare specialtyNEUROLOGY
Medical schoolUNIVERSITY OF MISSOURI, COLUMBIA SCHOOL OF MEDICINE
Graduated 1990 (36 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

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