MR. ABDELRAHMAN GADALLAH M.D.
NPI 1699450890
Student in an Organized Health Care Education/Training Program in St.louis, MO
About Mr. Abdelrahman Gadallah M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MR. ABDELRAHMAN GADALLAH M.D. (NPI 1699450890) is an individual student in an organized health care education/training program in St.louis, Missouri and active in the NPI registry since June 2023. He is enrolled in Medicare PECOS, is affiliated with Brigham And Women's Hospital, and maintains 3 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 3
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
Mr. Abdelrahman Gadallah M.d. 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 Reassignments
3Medicare enrollment records show Abdelrahman Gadallah reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Boston, MA 02115
- Reassigned Medicare billing, Massachusetts enrollment
- 4,574 clinicians in this Medicare group
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,234 clinicians in this Medicare group
Boston, MA 02114
- Reassigned Medicare billing, Massachusetts enrollment
- 6,360 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Brigham And Women's Hospital
Acute Care Hospitals · Boston, MAFrequently 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 Abdelrahman Gadallah's NPI number?
The NPI number for Abdelrahman Gadallah is 1699450890. It was assigned to this individual provider in the NPPES registry on June 16, 2023.
Where is Abdelrahman Gadallah located?
Abdelrahman Gadallah practices at Ssm Health St. Mary's Hospital, Dept. Of Internal Medicine 6420 Clayton Rd, St.Louis, MO 63117. The listed phone number is (314) 768-8778.
What is Abdelrahman Gadallah's specialty?
The primary specialty registered for this NPI is Student in an Organized Health Care Education/Training Program with taxonomy code 390200000X.
Is Abdelrahman Gadallah enrolled in Medicare?
Yes. Abdelrahman Gadallah 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 organizations bill Medicare for Abdelrahman Gadallah's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Abdelrahman Gadallah reassigns Medicare benefits to 3 organizations: Brigham & Womens Physicians Organization Inc (Boston, MA), The General Hospital Corporation (Boston, MA) and Massachusetts General Physicians Organization Inc (Boston, MA). Each 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 Abdelrahman Gadallah's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Abdelrahman Gadallah affiliated with any hospitals?
According to CMS data, Abdelrahman Gadallah is affiliated with Brigham And Women's Hospital.
When was this NPI record last updated?
The NPPES record for Abdelrahman Gadallah was last updated on August 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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.
# Mr. Abdelrahman Gadallah, M.D. · NPI 1699450890
Student in an Organized Health Care Education/Training Program provider in St.louis, Missouri. Individual provider, active in the CMS NPPES registry since June 16, 2023.
## Identity
- **NPI:** 1699450890 (Entity type: Individual)
- **Enumerated:** June 16, 2023
- **Primary specialty:** Student in an Organized Health Care Education/Training Program · taxonomy 390200000X
- **Sole proprietor:** No
## Practice location
- **Address:** SSM HEALTH ST. MARY'S HOSPITAL, DEPT. OF INTERNAL, MEDICINE 6420 CLAYTON RD, St.louis, MO 63117
- **Phone:** (314) 768-8778
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Brigham & Womens Physicians Organization Inc (NPI 1033535497, Boston, MA); The General Hospital Corporation (NPI 1023049236, Boston, MA); Massachusetts General Physicians Organization Inc (NPI 1801874573, Boston, MA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2014
## Record status
- **NPPES last updated:** August 5, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1699450890) · Data from the CMS NPPES public registry.