Quick answers
- Does Elizabeth B. Tarnell accept Medicare assignment?
- Yes. Medicare's clinician data says Elizabeth B. Tarnell 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. Tarnell see?
- In 2024, CMS data shows 371 Original Medicare patients and 4,935 services for Elizabeth B. Tarnell. This counts Original Medicare only and measures volume, not quality.
- What is Elizabeth B. Tarnell's NPI number?
- 1942209390. 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. Tarnell, 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 | 371 |
|---|---|
| Services billed to Medicare | 4,935 |
| Different services or procedures | 171 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Insertion of needle into vein for collection of blood sample (36415)618 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)590 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)198 services
- Blood test, lipids (cholesterol and triglycerides) (80061)174 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)168 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 pressure68%
- High cholesterol55%
- Arthritis39%
- Osteoporosis31%
- Chronic kidney disease23%
- Depression22%
Hospitals where Elizabeth B. Tarnell works
Medicare's Facility Affiliation Data lists Elizabeth B. Tarnell 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.
- Beth Israel Deaconess Hospital - NeedhamNeedham, MA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 220083
- Beth Israel Deaconess Medical CenterBoston, MA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 220086
- Brigham and Women Faulkner HospitalJamaica Plain, MA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 220119
- Brigham and Women's HospitalBoston, MA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 220110
- Newton-Wellesley HospitalNewton, MA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 220101
Practice locations
Addresses where Elizabeth B. Tarnell is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 9; the Medicare profile lists all.
- 1 Lyons StDedham, MA 02026 (781) 329‑1400
- 100 2nd AveNeedham, MA 02494 (781) 726‑4800
- 1250 Hancock StQuincy, MA 02169 (617) 740‑0600
- 133 Brookline AveBoston, MA 02215 (617) 421‑1000
- 2 Technology Park Dr, Suite ABourne, MA 02532 (508) 743‑9543
Group practices
Medicare enrollment lists Elizabeth B. Tarnell as a member of this group (CMS data updated October 2, 2026).
- Atrius Health Inc1,222 clinicians in the group
Specialties
- Internal Medicineprimary
- Pulmonary Diseasealso
Other internal medicine doctors in Dedham
Clinicians with the same Medicare primary specialty in Dedham, MA — not a recommendation.
Other clinicians in Atrius Health Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Connecticut School Of Medicine |
| Graduation year | 1984 (42 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1942209390 |
| 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