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

Dr. Harald Sinclair Mackenzie, MD

Individual provider Nephrology Physician · NPI 1497922439

Dr. Harald Sinclair Mackenzie, MD is a Nephrology Physician in Concord, Massachusetts. Practices as a sole proprietor. Licensed in Massachusetts.

Licensed in
MA
In the registry since
2008
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

422B Monument St
Concord, MA 01742-1810
Phone: (978) 729-4331
Show map & directions

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

Specialties & licences

Nephrology Physician (primary) Taxonomy 207RN0300X · Licence 77111 (MA)

Record details

NPI number1497922439
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMay 9, 2008
Last updated in NPPESMay 9, 2008