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

Ammar Hassan, DO

Individual provider Internal Medicine Physician · NPI 1023428877

Ammar Hassan, DO is a Gastroenterology in Munster, Indiana. Graduated from Midwestern University, Chicago College of Osteopathic Med in 2014, 12 years ago. Practices with Prime Healthcare Illinois Medical Group LLC, a 281-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Illinois and Indiana.

Years since qualifying
12
Trained at
Midwestern University, Chicago College of Osteopathic Med
Licensed in
IL, IN
In the registry since
2014
Specialties on file
4
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.

See every abbreviation used in this directory →

Practice location Address checks out

9410 Calumet Ave Ste 401
Munster, IN 46321-0018
Phone: (219) 922-4900
Fax: (219) 836-9922
Show map & directions

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

Additional practice locations (1)

  • 500 S Weber Rd, Romeoville, IL 60446-6528 — (815) 773-7732

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 2005989A (IN)
Internal Medicine Physician Taxonomy 207R00000X · Licence 02005989A (IN)
Internal Medicine Physician Taxonomy 207R00000X · Licence 036153911 (IL)
Gastroenterology Physician Taxonomy 207RG0100X · Licence 036153911 (IL)

Record details

NPI number1023428877
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedMay 2, 2014
Last updated in NPPESDecember 15, 2025
Certification dateDecember 15, 2025
Mailing address9410 Calumet Ave Ste 401, Munster, IN 46321-0018

Medicare enrollment

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

Medicare specialtyGASTROENTEROLOGY
Also practisesINTERNAL MEDICINE
Medical schoolMIDWESTERN UNIVERSITY, CHICAGO COLLEGE OF OSTEOPATHIC MED
Graduated 2014 (12 years in practice)
Group practice Prime Healthcare Illinois Medical Group Llc — 281 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Other providers in Munster