ZAID A AMMARI M.D. M.P.H.
NPI 1003299843
Internal Medicine - Cardiovascular Disease in Newark, DE
About Zaid A Ammari M.d. M.p.h. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ZAID A AMMARI M.D. M.P.H. (NPI 1003299843) is an individual cardiovascular disease provider in Newark, Delaware, licensed in Delaware (C1-0024763) and active in the NPI registry since June 2015. He is enrolled in Medicare PECOS, is affiliated with Union Hospital Of Cecil County, and is a graduate of Other (2012).
NPPES Registry Identity
Specialties & Licenses 2
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
Zaid A Ammari M.d. M.p.h. 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
2Medicare enrollment records show Zaid Ammari reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Newark, DE 19718
- Reassigned Medicare billing, Delaware enrollment
- 1,531 clinicians in this Medicare group
Elkton, MD 21921
- Reassigned Medicare billing, Maryland enrollment
- 512 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 8
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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Union Hospital Of Cecil County
Acute Care Hospitals · Elkton, MDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 19718 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.
NEWARK, DE 19718
NEWARK, DE 19718
NEWARK, DE 19718
NEWARK, DE 19718
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 Zaid Ammari's NPI number?
The NPI number for Zaid Ammari is 1003299843. It was assigned to this individual provider in the NPPES registry on June 29, 2015.
Where is Zaid Ammari located?
Zaid Ammari practices at 4755 Ogletown Stanton Rd, Newark, DE 19718. The listed phone number is (302) 733-1000.
What is Zaid Ammari's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.
Is Zaid Ammari enrolled in Medicare?
Yes. Zaid Ammari 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 Zaid Ammari's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Zaid Ammari reassigns Medicare benefits to 2 organizations: Christiana Care Health Services, Inc (Newark, DE) and Union Hospital Of Cecil County, Inc. (Elkton, MD). 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 Zaid Ammari's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Zaid Ammari affiliated with any hospitals?
According to CMS data, Zaid Ammari is affiliated with Union Hospital Of Cecil County.
When was this NPI record last updated?
The NPPES record for Zaid Ammari was last updated on October 9, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Zaid A Ammari, M.D. M.P.H. · NPI 1003299843
Cardiovascular Disease physician in Newark, Delaware. Individual provider, active in the CMS NPPES registry since June 29, 2015.
## Identity
- **NPI:** 1003299843 (Entity type: Individual)
- **Enumerated:** June 29, 2015
- **Primary specialty:** Internal Medicine - Cardiovascular Disease · taxonomy 207RC0000X
- **State license:** C1-0024763 (Delaware)
- **Sole proprietor:** No
## Practice location
- **Address:** 4755 OGLETOWN STANTON RD, Newark, DE 19718-2295
- **Phone:** (302) 733-1000 · **Fax:** (347) 851-8707
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Christiana Care Health Services, Inc (NPI 1104896596, Newark, DE); Union Hospital Of Cecil County, Inc. (NPI 1407607450, Elkton, MD) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2012
## Record status
- **NPPES last updated:** October 9, 2022
---
Source: [NPI Profile](https://npiprofile.com/npi/1003299843) · Data from the CMS NPPES public registry.