MARIAM ELKEIK MD
NPI 1407559644
Internal Medicine in Derby, CT
About Mariam Elkeik Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARIAM ELKEIK MD (NPI 1407559644) is an individual internal medicine provider in Derby, Connecticut, licensed in Connecticut (84045) and active in the NPI registry since March 2023. She is enrolled in Medicare PECOS and is a graduate of Other (2018).
NPPES Registry Identity
Specialties & Licenses
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
Mariam Elkeik Md 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 Mariam Elkeik reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Derby, CT 06418
- Reassigned Medicare billing, Connecticut enrollment
- 190 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 06418 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.
DERBY, CT 06418
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 Mariam Elkeik's NPI number?
The NPI number for Mariam Elkeik is 1407559644. It was assigned to this individual provider in the NPPES registry on March 27, 2023.
Where is Mariam Elkeik located?
Mariam Elkeik practices at 130 Division St, Derby, CT 06418. The listed phone number is (203) 732-1330.
What is Mariam Elkeik's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Mariam Elkeik enrolled in Medicare?
Yes. Mariam Elkeik 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 Mariam Elkeik's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mariam Elkeik reassigns Medicare benefits to Griffin Faculty Physicians, Inc. (Derby, CT). 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 Mariam Elkeik's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Mariam Elkeik was last updated on April 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Mariam Elkeik, MD · NPI 1407559644
Internal Medicine physician in Derby, Connecticut. Individual provider, active in the CMS NPPES registry since March 27, 2023.
## Identity
- **NPI:** 1407559644 (Entity type: Individual)
- **Enumerated:** March 27, 2023
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 84045 (Connecticut)
- **Sole proprietor:** No
## Practice location
- **Address:** 130 DIVISION ST, Derby, CT 06418-1326
- **Phone:** (203) 732-1330 · **Fax:** (203) 732-1332
## 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:** Griffin Faculty Physicians, Inc. (NPI 1598755605, Derby, CT), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2018
## Record status
- **NPPES last updated:** April 23, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1407559644) · Data from the CMS NPPES public registry.