ALAA ATIEH
NPI 1609290246
Internal Medicine - Gastroenterology in Hammond, IN
About Alaa Atieh NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ALAA ATIEH (NPI 1609290246) is an individual gastroenterology provider in Hammond, Indiana, licensed in Indiana (02005187A) and active in the NPI registry since February 2014. He is enrolled in Medicare PECOS, is affiliated with St Catherine Hospital Inc, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 3
Secondary Practice Locations 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Alaa Atieh is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Alaa Atieh reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
St John, IN 46373
- Reassigned Medicare billing, Indiana enrollment
- 607 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 19
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
St Catherine Hospital Inc
Acute Care Hospitals · East Chicago, INSt Mary Medical Center Inc
Acute Care Hospitals · Hobart, INCommunity Hospital
Acute Care Hospitals · Munster, INPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 46320 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
HAMMOND, IN 46320
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 Alaa Atieh's NPI number?
The NPI number for Alaa Atieh is 1609290246. It was assigned to this individual provider in the NPPES registry on February 18, 2014.
Where is Alaa Atieh located?
Alaa Atieh practices at 5454 Hohman Ave, Hammond, IN 46320. The listed phone number is (219) 932-2300.
What is Alaa Atieh's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.
Is Alaa Atieh enrolled in Medicare?
Yes. Alaa Atieh is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Alaa Atieh's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Alaa Atieh reassigns Medicare benefits to Community Care Network Inc (St John, IN). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Alaa Atieh's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Alaa Atieh accept?
Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian and Anthem Blue Cross and Blue Shield list Alaa Atieh as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Alaa Atieh affiliated with any hospitals?
According to CMS data, Alaa Atieh is affiliated with St Catherine Hospital Inc, St Mary Medical Center Inc and Community Hospital.
When was this NPI record last updated?
The NPPES record for Alaa Atieh was last updated on July 17, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.