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

Individual provider Orthodontics and Dentofacial Orthopedics Dentistry · NPI 1104022607

Dr. Marlene Amy Ostby, DDS, MS is an Orthodontics and Dentofacial Orthopedics Dentistry in Billings, Montana. Practices as a sole proprietor. Licensed in Montana and Texas.

Licensed in
MT, TX
In the registry since
2007
Specialties on file
2
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 A
Billings, MT 59102-2943
Phone: (406) 259-6774
Fax: (406) 657-6576
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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 2336 (MT)
Orthodontics and Dentofacial Orthopedics Dentistry Taxonomy 1223X0400X · Licence 21290 (TX)

Record details

NPI number1104022607
Entity typeIndividual (Type 1)
GenderFemale
Credentials DDS , MS
Sole proprietorYes
NPI enumeratedJune 22, 2007
Last updated in NPPESJune 6, 2011

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