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

Dr. Bruce Harlan, MD

Individual provider Internal Medicine Physician · NPI 1336256593

Dr. Bruce Harlan, MD is an Internal Medicine Physician in Mason City, Iowa. Licensed in Iowa. Registered with an NPI since 2006.

Licensed in
IA
In the registry since
2006
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

1000 4th St SW Ste IM
Mason City, IA 50401-2800
Phone: (641) 422-6999
Fax: (641) 422-6678
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 22594 (IA)

Record details

NPI number1336256593
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 24, 2006
Last updated in NPPESJuly 8, 2007

Other providers in Mason City