Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Marvin C. Kastrop, DDS, MS

Individual provider Orthodontics and Dentofacial Orthopedics Dentistry · NPI 1336249929

Dr. Marvin C. Kastrop, DDS, MS is an Orthodontics and Dentofacial Orthopedics Dentistry in Billings, Montana. Practices as a sole proprietor. Licensed in Montana.

Licensed in
MT
In the registry since
2006
What do these letters mean?
DDS — Doctor of Dental Surgery
A dentist. DDS and DMD are the same qualification — universities choose which title to award.
MS — Master of Science
A graduate science degree.

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Practice location Address checks out

1701 Ave E Ste B
Billings, MT 59102-2999
Phone: (406) 259-6774
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Orthodontics and Dentofacial Orthopedics Dentistry (primary) Taxonomy 1223X0400X · Licence 1273 (MT)

Record details

NPI number1336249929
Entity typeIndividual (Type 1)
GenderMale
Credentials DDS , MS
Sole proprietorYes
NPI enumeratedSeptember 23, 2006
Last updated in NPPESJuly 8, 2007
Mailing address1701 Avenue E, Suite B, Billings, MT 59102-2999

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