Quick answers
- Does Mary Catherine Castor accept Medicare assignment?
- Yes. Medicare's clinician data says Mary Catherine Castor 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 Catherine Castor see?
- In 2024, CMS data shows 336 Original Medicare patients and 833 services for Mary Catherine Castor. This counts Original Medicare only and measures volume, not quality.
- What is Mary Catherine Castor's NPI number?
- 1912492133. 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 Catherine Castor, 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 | 336 |
|---|---|
| Services billed to Medicare | 833 |
| Different services or procedures | 13 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Test for eardrum and muscle function (92550)330 services
- Comprehensive hearing and speech recognition test (92557)321 services
- Placement of ear probe for computerized measurement of repeated sounds with interpretation and report (92588)95 services
- Test to assess balance during warm and cool irrigation in both ears (92537)17 services
- Evaluation and testing for balance with recording (92540)17 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%
- Arthritis49%
- Anxiety29%
- Diabetes27%
- Chronic kidney disease22%
Practice locations
Addresses where Mary Catherine Castor is enrolled with Medicare (CMS data updated October 2, 2026).
- 53 -59 Public Sq, Suite 202Watertown, NY 13601 (315) 786‑3225
- 544 Towne DrFayetteville, NY 13066 (315) 766‑3225
Group practices
Medicare enrollment lists Mary Catherine Castor as a member of this group (CMS data updated October 2, 2026).
- East Coast Audiology and Physical Therapy PLLC14 clinicians in the group
Specialties
- Qualified Audiologistprimary
Other audiologists in Watertown
Clinicians with the same Medicare primary specialty in Watertown, NY — not a recommendation.
Other clinicians in East Coast Audiology and Physical Therapy PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | AU |
|---|---|
| Graduation year | 2018 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1912492133 |
| 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