Zachary Herbert Hollen, CCC/AUD
Audiologist · Duluth, MN
Zachary Herbert Hollen, CCC/AUD is an audiologist with a practice address in Duluth, Minnesota, and NPI 1356021620, issued on Jul 21, 2023. Check the license (Minnesota 528420, as entered in NPPES) with the Minnesota board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Zachary Herbert Hollen
- Credential
- CCC/AUD
- Primary taxonomy
- Audiologist 231H00000X
- License number
- 528420 MN
Self-reported in NPPES; status is on the state search - Practice location
- 400 E 3RD St, Duluth, MN 55805
- Phone
- (218) 786-8364
- Enumerated
- Jul 21, 2023
- Record last updated
- Jul 21, 2023
- Medicare enrollment
- Enrolled (PECOS I20230831000087); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 400 E 3RD St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Zachary Herbert Hollen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Minnesota board licenses this profession
Search for license 528420Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- The Duluth Clinic LtdVirginia, MN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Audiologist providers in Minnesota
There are 502 audiologist records in Minnesota.
Other audiologist records in Minnesota
- Ann Abel, AU.D., CCC-ASt Paul, MN1033121132
- Weston AdkinsRochester, MN1457701146
- Caroline Adsmond, AU.D.Rochester, MN1912683335
- David Akbari, AU.D.Arden Hills, MN1346651437
- Kristi Albers, AU.D.Stillwater, MN1588962161
- Shanna Allen, AUDRichfield, MN1255422556
- Rachel Allgor, AU.D.Edina, MN1952812927
- Jennifer Allie, AU.DChaska, MN1487829560
- Tracy Altmann, AUDMankato, MN1538148556
- Rachel Amorim, AUDRochester, MN1427021096
Common questions
What is Zachary Herbert Hollen, CCC/AUD's NPI number?
Zachary Herbert Hollen, CCC/AUD's National Provider Identifier (NPI) is 1356021620, issued on Jul 21, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Zachary Herbert Hollen, CCC/AUD located?
The NPPES record lists a practice address at 400 E 3RD St, Duluth, MN, 55805. Phone: (218) 786-8364. Providers update this record themselves, so call before visiting.
How can I verify Zachary Herbert Hollen, CCC/AUD's license?
NPPES lists Minnesota license number 528420, as entered by the provider. Search the Minnesota board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.