Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

John Mackenzie, DO

Individual provider Emergency Medicine Physician · NPI 1427037449

John Mackenzie, DO is an Emergency Medicine Physician in Lewes, Delaware. Licensed in Delaware. Registered with an NPI since 2006.

Licensed in
DE
In the registry since
2006
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

See every abbreviation used in this directory →

Practice location Address checks out

424 Savannah Rd
Lewes, DE 19958
Phone: (302) 645-3296
Fax: (302) 645-3862
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence C20008800 (DE)

Record details

NPI number1427037449
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedJanuary 10, 2006
Last updated in NPPESJuly 13, 2026
Mailing addressPo Box 3012, Wilmington, DE 19804

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