Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

JOHN MACKENZIE DO
NPI 1427037449
Emergency Medicine in Lewes, DE

Active since January 10, 2006
424 SAVANNAH ROAD, LEWES, DE 19958(302) 645-3296(302) 645-3862 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About John Mackenzie Do NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JOHN MACKENZIE DO (NPI 1427037449) is an individual emergency medicine provider in Lewes, Delaware, licensed in Delaware (C20008800) and active in the NPI registry since January 2006.

NPPES Registry Identity

NPI1427037449
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameJOHN MACKENZIECredential: DO
Location Address424 SAVANNAH ROADLewes, DE 19958
Mailing AddressPo Box 3012Wilmington, DE 19804 · (302) 224-5678 · Fax (302) 224-2848
Fax(302) 645-3862
Sole ProprietorNo
Enumeration DateJanuary 10, 2006
Last NPPES UpdateJuly 13, 2026
NPI 1427037449 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License Licensed in DE · C20008800
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
424 SAVANNAH ROAD, Lewes, DE 19958

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.

Registered Nurse
424 SAVANNAH ROAD
LEWES, DE 19958
Registered Nurse
424 SAVANNAH ROAD
LEWES, DE 19958
Emergency Medicine
424 SAVANNAH ROAD
LEWES, DE 19958
Registered Nurse
424 SAVANNAH ROAD
LEWES, DE 19958
Student in an Organized Health Care Education/Training Program
424 SAVANNAH ROAD
LEWES, DE 19958
Health and Wellness Coach
424 SAVANNAH ROAD
LEWES, DE 19958
Registered Nurse
424 SAVANNAH ROAD
LEWES, DE 19958
Health and Wellness Coach
424 SAVANNAH ROAD
LEWES, DE 19958

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 John Mackenzie's NPI number?

The NPI number for John Mackenzie is 1427037449. It was assigned to this individual provider in the NPPES registry on January 10, 2006.

Where is John Mackenzie located?

John Mackenzie practices at 424 Savannah Road, Lewes, DE 19958. The listed phone number is (302) 645-3296.

What is John Mackenzie's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

When was this NPI record last updated?

The NPPES record for John Mackenzie was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 days 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.