Sway Peng Chen, MD, PHD
Gastroenterology Physician · Boston, MA
Sway Peng Chen, MD, PHD is a gastroenterology physician with a practice address in Boston, Massachusetts, and NPI 1699302166, issued on Mar 25, 2020. Check the license (Massachusetts 1027191, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Sway Peng Chen
- Credential
- MD, PHD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 1027191 MA
Self-reported in NPPES; status is on the state search - Practice location
- 55 Fruit St., Boston, MA 02114
- Phone
- (617) 726-2000
- Enumerated
- Mar 25, 2020
- Record last updated
- Jun 5, 2026
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 686 in Massachusetts → Look up another NPI →
Also registered at 55 Fruit St.
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Sway Peng Chen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 1027191Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
78% fewer Medicare Part D claims than the average gastroenterology physician in 2024
178 Medicare Part D claims for 35 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 30% of claims.
Most prescribed
- Omeprazole43 claims
- Linzess13 claims
- Creon12 claims
- Rasuvo12 claims
- Xifaxan12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Sway Peng Chen among 686 gastroenterology physician records in Massachusetts
Sway Peng Chen, MD, PHD is one of 686 gastroenterology physician records with a practice address in Massachusetts. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 96% of them.
- NPI issued2020 · 96% of these records are older, 3% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileNo · 72% of these records are
- Record last updated2026 · 66% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Massachusetts
There are 686 gastroenterology physician records in Massachusetts.
All 686 in Massachusetts → Every provider in Boston → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Diane Abraczinskas, MDBoston, MA 021141811988488
- Karin Andersson, MDBoston, MA 021141972585511
- Bernard Aserkoff, MDBoston, MA 021141851381123
- Cheryl Bunker, MDBoston, MA 021141952384752
- Andrew Chan, M.D.Boston, MA 021141982600144
- Raymond Chung, MDBoston, MA 021141154311769
- Daniel Chung, MDBoston, MA 021141710978994
- Peter Kelsey, MDBoston, MA 021141255313383
Common questions
What is Sway Peng Chen, MD, PHD's NPI number?
Sway Peng Chen, MD, PHD's National Provider Identifier (NPI) is 1699302166, issued on Mar 25, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Sway Peng Chen, MD, PHD located?
The NPPES record lists a practice address at 55 Fruit St., Boston, MA, 02114. Phone: (617) 726-2000. Providers update this record themselves, so call before visiting.
How can I verify Sway Peng Chen, MD, PHD's license?
NPPES lists Massachusetts license number 1027191, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Sway Peng Chen, MD, PHD prescribe under Medicare Part D?
In 2024, Sway Peng Chen, MD, PHD had 178 Medicare Part D claims for 35 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.