A fast, free, no-login way to look up any U.S. healthcare provider in the federal NPPES registry.

Lookups

NPI Lookup
NPI Registry
By Specialty
By State

Resources

Guides
For Providers / API
Data Sources
About

Legal

Privacy
Terms
Correct a record

Data is sourced from the public NPPES (National Plan and Provider Enumeration System) registry published by CMS. NPI Central is not affiliated with, or endorsed by, CMSor any healthcare provider. Information is provided “as is” for general reference and is not medical advice.

FCRA notice: NPI Central is not a consumer reporting agency. This information may not be used to determine eligibility for employment, credentialing, insurance, or any other purpose covered by the Fair Credit Reporting Act.

© 2026 NPI Central. All rights reserved.

Ammar Hassan, D.O. — NPI 1023428877, Munster, IN | NPI Central

Home/
NPI Lookup/
IN/
NPI 1023428877

IndividualActive

Ammar Hassan, D.O.

NPI 1023428877 · Gastroenterology Physician · Munster, IN

Provider details

NPI number: 1023428877
Entity type: Individual
Primary specialty: Gastroenterology PhysicianAllopathic & Osteopathic Physicians
Credential: D.O.
Sex: Male
Sole proprietor: No
License: 02005989A (IN)

Specialties & taxonomies

Gastroenterology PhysicianPrimary207RG0100XLicense 2005989A (IN)
Allopathic & Osteopathic Physicians
Internal Medicine Physician207R00000XLicense 02005989A (IN)
Allopathic & Osteopathic Physicians
Internal Medicine Physician207R00000XLicense 036153911 (IL)
Allopathic & Osteopathic Physicians
Gastroenterology Physician207RG0100XLicense 036153911 (IL)
Allopathic & Osteopathic Physicians

Practice location

9410 Calumet Ave Ste 401

Munster, IN 46321-0018

Phone: (219) 922-4900

Fax: (219) 836-9922

Approximate (ZIP-level) locationGet directions

More IN providers

Mailing address

9410 Calumet Ave Ste 401

Munster, IN 46321-0018

Additional practice locations (1)

500 S Weber Rd
Romeoville, IL 60446-6528
Phone: (815) 773-7732

Registry dates

Enumerated: 2014-05-02
Last updated: 2025-12-15
Certified: 2025-12-15

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.