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
Mailing addressPo Box 607, Concord, MA 01742-0607