1. Home
  2. Directory
  3. Illinois
  4. Springfield
  5. Internal Medicine
  6. NPI Profile

MARK A. HARRISON M.D.
NPI 1831295666
Internal Medicine - Gastroenterology in Springfield, IL

Active since September 16, 2006
1025 S 6TH ST, SPRINGFIELD, IL 62703(217) 528-7541 Get Directions Write a Review

NPPES record last updated: August 20, 2008. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Mark A. Harrison M.d. NPPES

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

MARK A. HARRISON M.D. (NPI 1831295666) is an individual gastroenterology provider in Springfield, Illinois, licensed in Illinois (036-077012) and active in the NPI registry since September 2006.

NPPES Registry Identity

NPI1831295666
Entity TypeIndividualMale
Primary Taxonomy207RG0100X
Provider Legal NameMARK A. HARRISONCredential: M.D.
Location Address1025 S 6TH STSpringfield, IL 62703-2403
Mailing Address1025 S 6th StSpringfield, IL 62703-2403 · (217) 528-7541
Phone(217) 528-7541
Sole ProprietorNo
Enumeration DateSeptember 16, 2006
Last NPPES UpdateAugust 20, 2008
✔ NPI 1831295666 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code207RG0100X
License✔ Licensed in IL · 036-077012
Definition
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
1025 S 6TH ST, Springfield, IL 62703
Open in Google Maps ↗

Other Identifiers 3

Medicaid036077012IL
Medicare ID-Type UnspecifiedK23745
Medicare UPINE16604

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

JEREMY ELLIOTT
Nurse Practitioner (Family)
1025 S 6TH ST
SPRINGFIELD, IL 62703
Sangamon County (217) 528-7541
BARBARA J. WOLFSON L.C.P.C.
Counselor
1025 S 6TH ST
SPRINGFIELD, IL 62703
Sangamon County (217) 528-7541
DR. THOMAS NEIL ROOKE M.D.
Anesthesiology
1025 S 6TH ST
SPRINGFIELD, IL 62703
Sangamon County (217) 528-7541
AMANDA L. HOUSE FNP-BC
Nurse Practitioner (Family)
1025 S 6TH ST
SPRINGFIELD, IL 62703
Sangamon County (217) 528-7541
DELORES A GALLO CRNA
Nurse Anesthetist, Certified Registered
1025 S 6TH ST
SPRINGFIELD, IL 62703
Sangamon County (217) 528-7541
MS. NICOLETA EMILENA SPEIL M.D.
Internal Medicine
1025 S 6TH ST
SPRINGFIELD, IL 62703
Sangamon County (217) 528-7541
BINOD KHATIWADA MD
Internal Medicine
1025 S 6TH ST
SPRINGFIELD, IL 62703
Sangamon County (217) 528-7541
SUSAN STROW STEGEMAN M.D.
Ophthalmology
1025 S 6TH ST
SPRINGFIELD, IL 62703
Sangamon County (217) 528-7541

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 Mark Harrison's NPI number?

The NPI number for Mark Harrison is 1831295666. It was assigned to this individual provider in the NPPES registry on September 16, 2006.

Where is Mark Harrison located?

Mark Harrison practices at 1025 S 6th St, Springfield, IL 62703. The listed phone number is (217) 528-7541.

What is Mark Harrison's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

When was this NPI record last updated?

The NPPES record for Mark Harrison was last updated on August 20, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 years 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.