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

Dr. Mary Katherine Marshallsea, AUD

Individual provider Audiologist · NPI 1821646100

Dr. Mary Katherine Marshallsea, AUD is a Qualified Audiologist in Dallas, Texas. Qualified in 2019, 7 years ago. Practices with Dallas Otolaryngology Associates, a 19-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Texas.

Years since qualifying
7
Licensed in
TX
In the registry since
2019
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

7777 Forest Ln Ste A103
Dallas, TX 75230
Phone: (972) 566-7600
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 7777 Forest Ln Ste A103, Dallas, TX 75230 — (972) 566-7600

Specialties & licences

Audiologist (primary) Taxonomy 231H00000X · Licence 81171 (TX)

Record details

NPI number1821646100
Entity typeIndividual (Type 1)
GenderFemale
Credentials AUD
Sole proprietorNo
NPI enumeratedAugust 29, 2019
Last updated in NPPESFebruary 18, 2020
Certification dateFebruary 18, 2020

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyQUALIFIED AUDIOLOGIST
Medical schoolOTHER
Graduated 2019 (7 years in practice)
Group practice Dallas Otolaryngology Associates — 19 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients36
Services billed 77 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at Dallas Otolaryngology Associates

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 19 clinicians in the practice; 12 are shown here.

Other providers in Dallas