Marvin Kastrop, D.D.S., M.S.
Orthodontics and Dentofacial Orthopedics Dentistry · Billings, MT
Marvin Kastrop, D.D.S., M.S. is an orthodontics and dentofacial orthopedics dentistry with a practice address in Billings, Montana, and NPI 1336249929, issued on Sep 23, 2006. Check the license (Montana 1273, as entered in NPPES) with the Montana board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Marvin Kastrop
- Credential
- D.D.S., M.S.
- Primary taxonomy
- Orthodontics and Dentofacial Orthopedics Dentistry 1223X0400X
- License number
- 1273 MT
Self-reported in NPPES; status is on the state search - Practice location
- 1701 Avenue E, Billings, MT 59102
- Phone
- (406) 259-6774
- Enumerated
- Sep 23, 2006
- Entity
- Type 1 · individual
Also registered at 1701 Avenue E
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Hillary Miller, COTA/LOccupational Therapy Assistant1174013692
- Ailana Williams, MABehavior Analyst1811473531
Verify Marvin Kastrop in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Montana board licenses this profession
Search for license 1273Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
Orthodontics and Dentofacial Orthopedics Dentistry providers in Montana
There are 46 orthodontics and dentofacial orthopedics dentistry records in Montana. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
Other orthodontics and dentofacial orthopedics dentistry records in Montana
- Curtis Andrews, DDS, MSButte, MT1598939324
- Timothy Ballweber, DDS,MSHelena, MT1225220973
- Douglas Bennion, D.D.S.Billings, MT1366696809
- Christopher Bruch, D.D.S., M.S.D.Great Falls, MT1770645095
- Christopher Carlson, DMD, MSBozeman, MT1508986779
- Padraig Dennehy, DMDMissoula, MT1750659660
- D Diggs, DDS MSD PCMissoula, MT1053487660
- Gregory England, D.D.S.Billings, MT1801272471
- Daniel Fiehrer, DDS PCHelena, MT1609079961
- Jeffrey Foster, D.M.D.Helena, MT1386835700
Common questions
What is Marvin Kastrop, D.D.S., M.S.'s NPI number?
Marvin Kastrop, D.D.S., M.S.'s National Provider Identifier (NPI) is 1336249929, issued on Sep 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Marvin Kastrop, D.D.S., M.S. located?
The NPPES record lists a practice address at 1701 Avenue E, Billings, MT, 59102. Phone: (406) 259-6774. Providers update this record themselves, so call before visiting.
How can I verify Marvin Kastrop, D.D.S., M.S.'s license?
NPPES lists Montana license number 1273, as entered by the provider. Search the Montana board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.