Quick answers
- Does Anna Keenan accept Medicare assignment?
- Yes. Medicare's clinician data says Anna Keenan 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 Anna Keenan see?
- In 2024, CMS data shows 195 Original Medicare patients and 324 services for Anna Keenan. This counts Original Medicare only and measures volume, not quality.
- What is Anna Keenan's NPI number?
- 1538881651. 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 Anna Keenan, 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 | 195 |
|---|---|
| Services billed to Medicare | 324 |
| Different services or procedures | 3 |
| Participating Medicare provider | Yes |
| Average age of these patients | 78 |
Most frequent services
- Comprehensive hearing and speech recognition test (92557)197 services
- Test to assess middle ear function (92567)126 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%
- Arthritis53%
- Ischemic heart disease30%
- Anxiety29%
- Chronic kidney disease28%
Hospitals where Anna Keenan works
Medicare's Facility Affiliation Data lists Anna Keenan at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Massachusetts Eye and Ear Infirmary -Boston, MA · Acute Care Hospital · Emergency services: listed by Medicare · CCN 220075
Practice locations
Addresses where Anna Keenan is enrolled with Medicare (CMS data updated October 2, 2026).
- 101 Main StMedford, MA 02155 (781) 874‑1965
Group practices
Medicare enrollment lists Anna Keenan as a member of this group (CMS data updated October 2, 2026).
- Massachusetts Eye and Ear Associates, Inc433 clinicians in the group
Specialties
- Qualified Audiologistprimary
Find other clinicians: Qualified Audiologist, Massachusetts →
Other audiologists in Medford
Clinicians with the same Medicare primary specialty in Medford, MA — not a recommendation.
Other clinicians in Massachusetts Eye and Ear Associates, Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | AU |
|---|---|
| Graduation year | 2022 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1538881651 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- 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