Quick answers
- Does Sew Leong C. Kwa accept Medicare assignment?
- Yes. Medicare's clinician data says Sew Leong C. Kwa 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 Sew Leong C. Kwa see?
- In 2024, CMS data shows 294 Original Medicare patients and 2,511 services for Sew Leong C. Kwa. This counts Original Medicare only and measures volume, not quality.
- What is Sew Leong C. Kwa's NPI number?
- 1932119005. 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 Sew Leong C. Kwa, 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 | 294 |
|---|---|
| Services billed to Medicare | 2,511 |
| Different services or procedures | 31 |
| Participating Medicare provider | Yes |
| Average age of these patients | 78 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)299 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)106 services
- Test to measure expiratory airflow and volume (94010)78 services
- Telephone medical discussion with physician, 21-30 minutes (99443)54 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)44 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%
- COPD66%
- Arthritis53%
- Ischemic heart disease44%
- Asthma41%
Hospitals where Sew Leong C. Kwa works
Medicare's Facility Affiliation Data lists Sew Leong C. Kwa 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.
- Metrowest Medical CenterFramingham, MA · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 220175
Practice locations
Addresses where Sew Leong C. Kwa is enrolled with Medicare (CMS data updated October 2, 2026).
- 115 Lincoln StFramingham, MA 01702 (508) 383‑1566
- 800 Washington StBoston, MA 02111
Specialties
Find other Critical Care (Intensivists) doctors in Massachusetts →
Other critical care doctors in Massachusetts
Clinicians with the same Medicare primary specialty in Massachusetts — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1971 (55 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) | 1932119005 |
| 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