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

Dr. Mark William Dion, MD

Individual provider Radiation Oncology Physician · NPI 1447252010

Dr. Mark William Dion, MD is a Radiation Oncology Physician in Iowa City, Iowa. Licensed in Iowa. Registered with an NPI since 2005.

Licensed in
IA
In the registry since
2005
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

200 Hawkins Dr
Iowa City, IA 52242
Phone: (319) 356-2699
Fax: (319) 356-1530
Show map & directions

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

Specialties & licences

Radiation Oncology Physician (primary) Taxonomy 2085R0001X · Licence 25680 (IA)

Record details

NPI number1447252010
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 12, 2005
Last updated in NPPESJuly 1, 2010

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