Quick answers
- Does Zaid A. Ammari accept Medicare assignment?
- Yes. Medicare's clinician data says Zaid A. Ammari accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Zaid A. Ammari see?
- In 2024, CMS data shows 364 Original Medicare patients and 880 services for Zaid A. Ammari. This counts Original Medicare only and measures volume, not quality.
- What is Zaid A. Ammari's NPI number?
- 1003299843. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Zaid A. Ammari, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 364 |
|---|---|
| Services billed to Medicare | 880 |
| Different services or procedures | 32 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Critical care, first 30-74 minutes (99291)313 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)194 services
- Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)66 services
- Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)58 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)58 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Ischemic heart disease67%
- Heart failure61%
- Atrial fibrillation53%
- Diabetes46%
Hospitals where Zaid A. Ammari works
Medicare's Facility Affiliation Data lists Zaid A. Ammari at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Christiana HospitalNewark, DE · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 080001
- Union Hospital of Cecil CountyElkton, MD · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 210032
Practice locations
Addresses where Zaid A. Ammari is enrolled with Medicare (CMS data updated October 2, 2026).
- 106 Bow StElkton, MD 21921 (410) 398‑4000
- 4755 Ogletown Stanton RdNewark, DE 19718 (302) 838‑3088
Group practices
Medicare enrollment lists Zaid A. Ammari as a member of these groups (CMS data updated October 2, 2026).
- Christiana Care Health Services Inc1,483 clinicians in the group
- Union Hospital of Cecil County288 clinicians in the group
Specialties
Other internal medicine doctors in Elkton
Clinicians with the same Medicare primary specialty in Elkton, MD — not a recommendation.
Other clinicians in Christiana Care Health Services Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2012 (14 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1003299843 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians