Quick answers
- Does Elizabeth B. Hannigan accept Medicare assignment?
- Yes. Medicare's clinician data says Elizabeth B. Hannigan 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 Elizabeth B. Hannigan see?
- In 2024, CMS data shows 284 Original Medicare patients and 4,587 services for Elizabeth B. Hannigan. This counts Original Medicare only and measures volume, not quality.
- What is Elizabeth B. Hannigan's NPI number?
- 1417359696. 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 Elizabeth B. Hannigan, 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 | 284 |
|---|---|
| Services billed to Medicare | 4,587 |
| Different services or procedures | 19 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Therapy procedure using exercise to develop strength, endurance, range of motion, and flexibility, each 15 minutes (97110)973 services
- Therapy procedure using functional activities (97530)828 services
- Therapy procedure to re-educate brain-to-nerve-to-muscle function, each 15 minutes (97112)616 services
- Eye training exercise under supervision of health care professional (92066)394 services
- Eye training exercise performed by health care professional (92065)382 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 cholesterol58%
- High blood pressure50%
- Arthritis38%
- Anxiety30%
- Depression24%
- Ischemic heart disease19%
Practice locations
Addresses where Elizabeth B. Hannigan is enrolled with Medicare (CMS data updated October 2, 2026).
- 15 Central StAndover, MA 01810 (978) 475‑5252
- 86 Masonic StNorthampton, MA 01060 (413) 586‑5002
Group practices
Medicare enrollment lists Elizabeth B. Hannigan as a member of this group (CMS data updated October 2, 2026).
- Aeg Massachusetts Professional PC45 clinicians in the group
Specialties
- Optometryprimary
Other optometrists in Andover
Clinicians with the same Medicare primary specialty in Andover, MA — not a recommendation.
Other clinicians in Aeg Massachusetts Professional PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | OD |
|---|---|
| Optometry school | New England College Of Optometry |
| Graduation year | 2011 (15 years since optometry school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1417359696 |
| 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