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Emergency Medicine

Lisa R. Maercks Nagle, MD

Works at hospitals in Dover, DE · Wilmington, DE · Delaware

Summary

Dr. Lisa R. Maercks Nagle, MD is an emergency medicine doctor at 701 N Clayton St, Wilmington, DE 19805. Phone: (302) 421-4100. Accepts Medicare assignment. In 2024, Lisa R. Maercks Nagle had 152 Original Medicare patients and 175 services. NPI 1942289830. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

From official Medicare data

This page shows what Medicare's official clinician data says about Lisa R. Maercks Nagle, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Lisa R. Maercks Nagle accept Medicare assignment?
Yes. Medicare's clinician data says Lisa R. Maercks Nagle 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 Lisa R. Maercks Nagle see?
In 2024, CMS data shows 152 Original Medicare patients and 175 services for Lisa R. Maercks Nagle. This counts Original Medicare only and measures volume, not quality.
What is Lisa R. Maercks Nagle's NPI number?
1942289830. 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 Lisa R. Maercks Nagle, 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 patients152
Services billed to Medicare175
Different services or procedures14
Participating Medicare providerYes
Average age of these patients71

Most frequent services

  1. Emergency department visit with high level of medical decision making (99285)82 services
  2. Emergency department visit with moderate level of medical decision making (99284)55 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%
  • Arthritis57%
  • Anxiety41%
  • Depression39%
  • Diabetes38%

Hospitals where Lisa R. Maercks Nagle works

Medicare's Facility Affiliation Data lists Lisa R. Maercks Nagle 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.

Practice locations

Addresses where Lisa R. Maercks Nagle is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Lisa R. Maercks Nagle as a member of this group (CMS data updated October 2, 2026).

  • Cep America LLC1,023 clinicians in the group

Specialties

Find other Emergency Medicine doctors in Delaware →

Other emergency medicine doctors in Wilmington

Clinicians with the same Medicare primary specialty in Wilmington, DE — not a recommendation.

All emergency medicine doctors in Wilmington →

Other clinicians in Cep America LLC

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolUniversity Of Florida College Of Medicine
Graduation year1999 (27 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1942289830
CorrectionsReport 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

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians