Zachary Hollen, CCC/AUD
NPI 1356021620 · Audiologist · Duluth, MN
Enrolled with Medicare as Practitioner - Qualified Audiologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Zachary Hollen, CCC/AUD is a Audiologist provider in Duluth, MN (NPI 1356021620).
Provider details
- NPI number
- 1356021620
- Entity type
- Individual
- Primary specialty
- AudiologistSpeech, Language and Hearing Service Providers
- Credential
- CCC/AUD
- Sex
- Male
- Sole proprietor
- No
- License
- 528420 (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
2 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
- 2023-07-21
- Last updated
- 2023-07-21
- Certified
- 2023-07-21
Frequently asked questions
- What is Zachary Hollen's NPI number?
- Zachary Hollen's National Provider Identifier (NPI) is 1356021620, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Zachary Hollen's specialty?
- Zachary Hollen is listed in the NPPES registry with a primary specialty of Audiologist (Speech, Language and Hearing Service Providers).
- Where is Zachary Hollen located?
- Zachary Hollen's practice location on file with NPPES is 400 E 3rd St, Duluth, MN 55805-1951.
- What is Zachary Hollen's phone number?
- The practice phone number listed in the NPPES registry for Zachary Hollen is (218) 786-8364.
- Does Zachary Hollen accept Medicare?
- Zachary Hollen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Zachary Hollen's NPI active?
- Yes — Zachary Hollen's NPI (1356021620) is active in the NPPES registry as of the last update on 2023-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.