Quick answers
- Does Elizabeth H. Tsai accept Medicare assignment?
- Yes. Medicare's clinician data says Elizabeth H. Tsai 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 H. Tsai see?
- In 2024, CMS data shows 240 Original Medicare patients and 1,039 services for Elizabeth H. Tsai. This counts Original Medicare only and measures volume, not quality.
- What is Elizabeth H. Tsai's NPI number?
- 1700105293. 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 H. Tsai, 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 | 240 |
|---|---|
| Services billed to Medicare | 1,039 |
| Different services or procedures | 37 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)207 services
- Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)176 services
- Insertion of needle into vein for collection of blood sample (36415)157 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)131 services
- Annual alcohol misuse screening, 5 to 15 minutes (G0442)68 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 pressure73%
- High cholesterol63%
- Arthritis38%
- Anxiety30%
- Chronic kidney disease30%
- Diabetes27%
Hospitals where Elizabeth H. Tsai works
Medicare's Facility Affiliation Data lists Elizabeth H. Tsai 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.
- Lahey Hospital & Medical Center, BurlingtonBurlington, MA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 220171
- Melrosewakefield HealthcareMelrose, MA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 220070
- Tufts Medical CenterBoston, MA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 220116
Practice locations
Addresses where Elizabeth H. Tsai is enrolled with Medicare (CMS data updated October 2, 2026).
- 52 Crest Ave, Suite 1Winthrop, MA 02152 (617) 846‑8622
Group practices
Medicare enrollment lists Elizabeth H. Tsai as a member of this group (CMS data updated October 2, 2026).
- Hallmark Health Medical Associates Inc147 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Massachusetts
Clinicians with the same Medicare primary specialty in Massachusetts — not a recommendation.
Other clinicians in Hallmark Health Medical Associates Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Rowan University School Of Osteopathic Medicine |
| Graduation year | 2007 (19 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) | 1700105293 |
| 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