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

Dr. John Nicholas Tasiopoulos, DO

Individual provider Gastroenterology Physician · NPI 1346384492

Dr. John Nicholas Tasiopoulos, DO is a Gastroenterology in Libertyville, Illinois. Graduated from Midwestern University, Chicago College of Osteopathic Med in 1991, 35 years ago. Practices with Gi Partners of Illinois PLLC, a 38-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
35
Trained at
Midwestern University, Chicago College of Osteopathic Med
Licensed in
IL
In the registry since
2007
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

1880 W Winchester Rd Ste 201
Libertyville, IL 60048-5341
Phone: (847) 247-0187
Fax: (847) 247-0487
Show map & directions

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

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 207RG0100X (IL)

Record details

NPI number1346384492
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedFebruary 19, 2007
Last updated in NPPESDecember 13, 2021
Certification dateDecember 13, 2021
Mailing address1880 W Winchester Rd, Suite 201, Libertyville, IL 60048-5341

Medicare enrollment

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

Medicare specialtyGASTROENTEROLOGY
Medical schoolMIDWESTERN UNIVERSITY, CHICAGO COLLEGE OF OSTEOPATHIC MED
Graduated 1991 (35 years in practice)
Group practice Gi Partners Of Illinois Pllc — 38 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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