Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Daniel Derek Mast, AUD

Individual provider Audiologist · NPI 1033004973

Dr. Daniel Derek Mast, AUD is an Audiologist in Freeport, Illinois. Practices as a sole proprietor. Licensed in Illinois.

Licensed in
IL
In the registry since
2025
What do these letters mean?
AUD — Doctor of Audiology
A hearing specialist who tests hearing and fits hearing aids.

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Practice location Address checks out

610 S Park Crest Dr
Freeport, IL 61032-7802
Phone: (815) 235-3277
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Audiologist (primary) Taxonomy 231H00000X · Licence 147.002059 (IL)

Record details

NPI number1033004973
Entity typeIndividual (Type 1)
GenderMale
Credentials AUD
Sole proprietorYes
NPI enumeratedJune 11, 2025
Last updated in NPPESJune 11, 2025
Certification dateJune 11, 2025
Mailing address610 S Park Crest Dr, Freeport, IL 61032-7802

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