Quick answers
- Does Lynn A. Demers accept Medicare assignment?
- Yes. Medicare's clinician data says Lynn A. Demers 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 Lynn A. Demers see?
- In 2024, CMS data shows 157 Original Medicare patients and 298 services for Lynn A. Demers. This counts Original Medicare only and measures volume, not quality.
- What is Lynn A. Demers's NPI number?
- 1407591431. 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 Lynn A. Demers, 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 | 157 |
|---|---|
| Services billed to Medicare | 298 |
| Different services or procedures | 21 |
| Participating Medicare provider | Yes |
| Average age of these patients | 71 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)71 services
- New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)33 services
- Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus (87426)32 services
- Admn sarscov2 vacc 1 dose (90480)27 services
- Administration of influenza virus vaccine (G0008)25 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 pressure61%
- High cholesterol58%
- Arthritis37%
- Anxiety25%
- Depression18%
- Chronic kidney disease17%
Hospitals where Lynn A. Demers works
Medicare's Facility Affiliation Data lists Lynn A. Demers 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.
- The Cooley Dickinson Hospital IncNorthampton, MA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 220015
Practice locations
Addresses where Lynn A. Demers is enrolled with Medicare (CMS data updated October 2, 2026).
- 51 Locust StNorthampton, MA 01060 (413) 614‑1112
- 51 Locust St, Suite 3Northampton, MA 01060 (413) 614‑1112
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Northampton
Clinicians with the same Medicare primary specialty in Northampton, MA — not a recommendation.
Clinician information
| Graduation year | 2021 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1407591431 |
| 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