DR. MARIAH LEEANN OYEN DDS
NPI 1548134836
Dentist in Hartford, SD

Q: What is Mariah Oyen's NPI number?

The NPI number for Mariah Oyen is 1548134836. It was assigned to this individual provider in the NPPES registry on October 1, 2025.

Q: What is Mariah Oyen's specialty?

The primary specialty registered for this NPI is Dentist with taxonomy code 122300000X.

Q: When was this NPI record last updated?

The NPPES record for Mariah Oyen was last updated on October 1, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since October 01, 2025

304 SD-38, SUITE 138, HARTFORD, SD 57033(605) 528-6750 Get Directions Write a Review

NPPES record last updated: October 1, 2025. Verified against the NPPES registry weekly; last sync: October 04, 2026.

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About Dr. Mariah Leeann Oyen Dds NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. MARIAH LEEANN OYEN DDS (NPI 1548134836) is an individual dentist in Hartford, South Dakota, licensed in South Dakota (D1501) and active in the NPI registry since October 2025.

NPPES Registry Identity

NPI1548134836

Entity TypeIndividualFemale

Primary Taxonomy122300000X

Provider Legal NameDR. MARIAH LEEANN OYENCredential: DDS

Location Address304 SD-38, SUITE 138Hartford, SD 57033

Mailing AddressPo Box 757Hartford, SD 57033-0757 · (605) 528-6750

Phone(605) 528-6750

Sole ProprietorNo

Enumeration DateOctober 1, 2025

NPPES CertifiedSeptember 16, 2025

✔ NPI 1548134836 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentistDental Providers

Taxonomy Code122300000X

License✔ Licensed in SD · D1501

Definition

A dentist is a person qualified by a doctorate in dental surgery (D.D.S.) or dental medicine (D.M.D.), licensed by the state to practice dentistry, and practicing within the scope of that license. There is no difference between the two degrees: dentists who have a DMD or DDS have the same education. Universities have the prerogative to determine what degree is awarded. Both degrees use the same curriculum requirements set by the American Dental Association's Commission on Dental Accreditation. Generally, three or more years of undergraduate education plus four years of dental school is required to graduate and become a general dentist. State licensing boards accept either degree as equivalent, and both degrees allow licensed individuals to practice the same scope of general dentistry. Additional post-graduate training is required to become a dental specialist.

304 SD-38, Hartford, SD 57033

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Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mariah Oyen's NPI number?

The NPI number for Mariah Oyen is 1548134836. It was assigned to this individual provider in the NPPES registry on October 1, 2025.

Where is Mariah Oyen located?

Mariah Oyen practices at 304 Sd-38 Suite 138, Hartford, SD 57033. The listed phone number is (605) 528-6750.

What is Mariah Oyen's specialty?

The primary specialty registered for this NPI is Dentist with taxonomy code 122300000X.

When was this NPI record last updated?

The NPPES record for Mariah Oyen was last updated on October 1, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.