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

Dr. Harold S Kost, MD

Individual provider Internal Medicine Physician · NPI 1043369234

Dr. Harold S Kost, MD is an Internal Medicine Physician in Holliston, Massachusetts. Practices as a sole proprietor. Licensed in Massachusetts.

Licensed in
MA
In the registry since
2007
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

30 Concord St
Holliston, MA 01746-1306
Phone: (508) 429-6504
Fax: (507) 429-7745
Show map & directions

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 28327 (MA)

Record details

NPI number1043369234
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJanuary 9, 2007
Last updated in NPPESJanuary 21, 2012

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