Gregory Oja, M.S.
NPI 1861569063 · Audiologist-Hearing Aid Fitter · Bemidji, MN
Gregory Oja, M.S. is a Audiologist-Hearing Aid Fitter provider in Bemidji, MN (NPI 1861569063).
Provider details
- NPI number
- 1861569063
- Entity type
- Individual
- Primary specialty
- Audiologist-Hearing Aid FitterSpeech, Language and Hearing Service Providers
- Credential
- M.S.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 5254 (MN)
Specialties & taxonomies
Speech, Language and Hearing Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-30
- Last updated
- 2007-07-08
Frequently asked questions
- What is Gregory Oja's NPI number?
- Gregory Oja's National Provider Identifier (NPI) is 1861569063, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Oja's specialty?
- Gregory Oja is listed in the NPPES registry with a primary specialty of Audiologist-Hearing Aid Fitter (Speech, Language and Hearing Service Providers).
- Where is Gregory Oja located?
- Gregory Oja's practice location on file with NPPES is 612 5th St Nw, Bemidji, MN 56601-2915.
- What is Gregory Oja's phone number?
- The practice phone number listed in the NPPES registry for Gregory Oja is (218) 444-4444.
- Is Gregory Oja's NPI active?
- Yes — Gregory Oja's NPI (1861569063) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.