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

Ari Seifter

Individual provider Internal Medicine Physician · NPI 1851785091

Ari Seifter is a Hematology/Oncology in Orland Park, Illinois. Graduated from University of Maryland School of Medicine in 2015, 11 years ago. Practices with Advocate Health and Hospitals Corporation, a 3,079-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Illinois.

Years since qualifying
11
Trained at
University of Maryland School of Medicine
Licensed in
IL
In the registry since
2015
Specialties on file
3
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Practice location Address checks out

9550 W 167th St
Orland Park, IL 60467-5561
Phone: (708) 873-4500
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hematology (Internal Medicine) Physician (primary) Taxonomy 207RH0000X · Licence 036-145267 (IL)
Internal Medicine Physician Taxonomy 207R00000X · Licence 125066528 (IL)
Hematology & Oncology Physician Taxonomy 207RH0003X · Licence 036145267 (IL)

Record details

NPI number1851785091
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorYes
NPI enumeratedMarch 25, 2015
Last updated in NPPESMay 4, 2022
Certification dateMay 4, 2022
Mailing address29373 Network Pl, Chicago, IL 60673-1293

Medicare enrollment

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

Medicare specialtyHEMATOLOGY/ONCOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolUNIVERSITY OF MARYLAND SCHOOL OF MEDICINE
Graduated 2015 (11 years in practice)
Group practice Advocate Health And Hospitals Corporation — 3079 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Other providers in Orland Park