Sew-Leong C. Kwa, MBBS, PC
- Medicare services, 2024
- 762
- Medicare patients, 2024
- 294
- Part D claims, 2024
- 922
- Hospital affiliations
- 2
- Industry payments
- $3,245
- Practice address
- 800 Washington Street, Boston, MA 02111
- Practice phone
- Call (617) 636-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Sew-Leong Kwa's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Sew-Leong C. Kwa is an internist in Boston, Massachusetts
Sew-Leong Kwa practices at Tufts Medical Center in Boston, Massachusetts, part of Tufts Medicine.
Sew-Leong Kwa's NPI, 1932119005, was assigned on August 9, 2006. Sew-Leong Kwa holds Massachusetts license 42224.
- NPI
- 1932119005NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6800843939
- NPI enumeration date
- August 9, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (617) 636-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 81
- Medical school graduation
- 1971
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Sew-Leong C. Kwa practices at Tufts Medical Center in Boston, Massachusetts
Sew-Leong Kwa's primary practice is Tufts Medical Center, at 800 Washington Street, Boston, MA 02111 in Suffolk County. The practice phone is (617) 636-5000.
- Tufts Medical Center800 Washington Street, Boston, MA 02111 · Suffolk CountyPhone(617) 636-5000
Source: Dmand AI Affiliation Data
Sew-Leong C. Kwa is affiliated with 3 sites of care and 1 medical group
Sew-Leong Kwa's primary practice is Tufts Medical Center in Boston, Massachusetts, part of Tufts Medicine. Sew-Leong Kwa is also affiliated with Framingham Union Hospital. The medical group on file is Pratt Medical Group, Inc. - General Medical Associates (General Internal Medicine). Dmand AI also links Sew-Leong Kwa to 1 more imaging center, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Sew-Leong C. Kwa's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Sew-Leong Kwa practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Tufts Medical Center | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Tufts Medicine and 6.2K+ hospitals, with verified contacts in the same login.
Sew-Leong C. Kwa is one of 5,528 internists in Massachusetts
Internal medicine is Sew-Leong Kwa's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Sew-Leong Kwa is licensed in Massachusetts.
Specialties and state licenses
- Internal medicine, MassachusettsPrimary
Internists near Sew-Leong Kwa
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Sew-Leong C. Kwa billed Medicare for 762 services in 2024
CMS data shows 762 Medicare services from Sew-Leong Kwa across 13 procedure codes in 2024, for 294 Medicare patients. Medicare paid $73,260 for them.
Sew-Leong Kwa's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 5892024: 6236%
- Tests and treatments
- 2023: 632024: 139121%
Where Sew-Leong Kwa's Medicare services took place, 2024
- In an office68290%
- In a facility8010%
Sew-Leong Kwa compared with the Massachusetts median for internists, 2024
- Sew-Leong Kwa
- Massachusetts median
- Medicare services
- 762vs 43177% above
- Medicare patients
- 294vs 19452% above
- Part D claims
- 806vs 4022.0 times
Medians across 5,369 internists in Massachusetts with Dmand AI profiles that report each measure.
Sew-Leong Kwa's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Sew-Leong Kwa and other internists in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Sew-Leong C. Kwa treated 294 Medicare patients in 2024, average age 78
CMS counts 294 Medicare patients who saw Sew-Leong Kwa in 2024. The largest group is 75 to 84, with 115 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 16% are also on Medicaid. Their average risk score is 1.74, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Sew-Leong Kwa's median patient age at 71, with 64% women.
Sew-Leong Kwa's Medicare patients by age, 2024
Sew-Leong Kwa's Medicare patients by sex, 2024
- Women19466%
- Men10034%
Chronic conditions among Sew-Leong Kwa's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- COPD66%
- Arthritis53%
- Ischemic heart disease44%
- Asthma41%
- Anxiety35%
- Mood disorders33%
Share of Medicare patients with each condition. A patient can have several.
Sew-Leong Kwa's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women64%
- Men36%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Sew-Leong C. Kwa wrote 922 Medicare Part D claims in 2024
In 2024, Sew-Leong Kwa wrote 922 Medicare Part D claims for 247 patients. 42% of them were for generic drugs. CMS names the drug for 806 of them, across 22 drugs with 11 or more claims each, at $312,747 in total drug cost. In 2023, CMS named 959 claims across 22 drugs.
Sew-Leong Kwa's Part D claims by kind of drug, 2024
- Generic389 claims42%
- Brand-name533 claims58%
Sew-Leong Kwa's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Sew-Leong Kwa's Part D claims, 2024
- Antibiotics6%59 of 922 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 9592024: 80616%
Drugs named by CMS: 22 in 2024, 22 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Sew-Leong C. Kwa offers telehealth to Medicare patients
Sew-Leong Kwa accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Sew-Leong Kwa as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Sew-Leong C. Kwa received $3,245 in industry payments from 2016 to 2025
CMS Open Payments shows 155 general payments to Sew-Leong Kwa from 21 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. AstraZeneca Pharmaceuticals LP paid the most, $935.
General payments to Sew-Leong Kwa by program year, 2016 to 2025
General payments to Sew-Leong Kwa by kind, 2016 to 2025
- Food and beverage$3,234100%
- Education$110%
Companies that paid Sew-Leong Kwa the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Sew-Leong C. Kwa's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Sew-Leong C. Kwa
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Sew-Leong C. Kwa's NPI number?
Sew-Leong C. Kwa's NPI number is 1932119005. It was assigned on August 9, 2006, and it is active in the NPI Registry.
What does Sew-Leong C. Kwa specialize in?
Sew-Leong C. Kwa is an internist in Boston, Massachusetts. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Sew-Leong C. Kwa practice?
Sew-Leong Kwa practices at 800 Washington Street, Boston, MA 02111. Sew-Leong Kwa's primary practice is Tufts Medical Center in Boston, Massachusetts, part of Tufts Medicine. Dmand AI also links Sew-Leong Kwa to 1 imaging center.
What is Sew-Leong C. Kwa's office phone number?
The practice phone on file for Sew-Leong Kwa is (617) 636-5000.
What is Sew-Leong C. Kwa's medical license number?
Sew-Leong Kwa holds Massachusetts license 42224.
Which hospitals is Sew-Leong C. Kwa affiliated with?
Sew-Leong Kwa practices at Tufts Medical Center in Boston, Massachusetts. Sew-Leong Kwa is also affiliated with Framingham Union Hospital.
What medical group is Sew-Leong C. Kwa part of?
Sew-Leong Kwa is linked to Pratt Medical Group, Inc. - General Medical Associates (General Internal Medicine).
Does Sew-Leong C. Kwa accept Medicare?
Yes. CMS data shows Sew-Leong Kwa billed Medicare for 762 services in 2024, and Sew-Leong Kwa accepts Medicare assignment.
Does Sew-Leong C. Kwa offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Sew-Leong Kwa as offering telehealth services.
How many Medicare patients does Sew-Leong C. Kwa see?
CMS counts 294 Medicare patients who saw Sew-Leong Kwa in 2024, with an average age of 78.
Show 4 more questionsShow fewer questions
What services does Sew-Leong C. Kwa bill to Medicare?
In 2024, Sew-Leong Kwa's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99215) and lung function service (94010).
What drugs does Sew-Leong C. Kwa prescribe most?
In 2024 Medicare Part D data, Sew-Leong Kwa's most prescribed drugs by claims were Albuterol Sulfate Hfa, Prednisone and Anoro Ellipta.
Has Sew-Leong C. Kwa received payments from drug or device companies?
CMS Open Payments shows $3,245 in general payments to Sew-Leong Kwa from 21 companies from 2016 to 2025. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Sew-Leong C. Kwa been practicing?
Sew-Leong Kwa graduated from medical school in 1971, 55 years ago.
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