Quick answers
- Does Mary K. Marshallsea accept Medicare assignment?
- Yes. Medicare's clinician data says Mary K. Marshallsea accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Mary K. Marshallsea see?
- In 2024, CMS data shows 36 Original Medicare patients and 77 services for Mary K. Marshallsea. This counts Original Medicare only and measures volume, not quality.
- What is Mary K. Marshallsea's NPI number?
- 1821646100. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Mary K. Marshallsea, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 36 |
|---|---|
| Services billed to Medicare | 77 |
| Different services or procedures | 8 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Evaluation and testing for balance with recording (92540)20 services
- Test to assess balance during warm and cool irrigation in both ears (92537)19 services
- Test to assess balance during warm or cool irrigation in both ears (92538)11 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Arthritis47%
- Diabetes33%
Practice locations
Addresses where Mary K. Marshallsea is enrolled with Medicare (CMS data updated October 2, 2026).
- 3900 Junius St, Suite 240Dallas, TX 75246 (469) 803‑5555
- 7777 Forest Ln, Suite A103Dallas, TX 75230 (972) 566‑7600
Group practices
Medicare enrollment lists Mary K. Marshallsea as a member of this group (CMS data updated October 2, 2026).
- Dallas Otolaryngology Associates19 clinicians in the group
Specialties
- Qualified Audiologistprimary
Other audiologists in Dallas
Clinicians with the same Medicare primary specialty in Dallas, TX — not a recommendation.
Other clinicians in Dallas Otolaryngology Associates
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | AU |
|---|---|
| Graduation year | 2019 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1821646100 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians