Caroline Hsu, M.D.
Nephrology Physician · Boston, MA
Caroline Hsu, M.D. is a nephrology physician with a practice address in Boston, Massachusetts, and NPI 1972957207, issued on Apr 23, 2016. Check the license (Massachusetts 278398, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Caroline Hsu
- Credential
- M.D.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- 278398 MA
Self-reported in NPPES; status is on the state search - Practice location
- 800 Washington St, Boston, MA 02111
- Phone
- (617) 636-8421
- Enumerated
- Apr 23, 2016
- Entity
- Type 1 · individual
Also registered at 800 Washington St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jeffrey Aalberg, MD, MPHSurgery Physician1326788027
- Omer Abbak, PHARMDPharmacist1114500337
- Aya Abdelnaser, MDStudent in an Organized Health Care Education/Training Program1770425373
- Marie Elise Abi Antoun, MDObstetrics & Gynecology Physician1356042626
- Ahmad AboalfarajSurgery Physician1538517651
- Tala Abu Samaan, MDStudent in an Organized Health Care Education/Training Program1376386250
Verify Caroline Hsu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 278398Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
73% fewer Medicare Part D claims than the average nephrology physician in 2024
411 Medicare Part D claims for 22 beneficiaries, against an average of 1,511 among the 8,473 providers of this specialty who prescribed in Part D.
Most prescribed
- Sevelamer Carbonate50 claims
- Losartan Potassium49 claims
- Amlodipine Besylate47 claims
- Metoprolol Succinate36 claims
- Atorvastatin Calcium30 claims
- Carvedilol25 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.
One hospital or facility affiliation
- Pratt Medical Group IncBoston, MA
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Nephrology Physician providers in Massachusetts
There are 314 nephrology physician records in Massachusetts.
Other nephrology physician records in Massachusetts
- Amtul Aala, MDBoston, MA1174946347
- Reza Abdi, MDBoston, MA1356359368
- Vivian AbernethyBoston, MA1710960232
- Rekha Abichandani, M.D.Cambridge, MA1912033598
- Konstantin Abramov, M.D.Worcester, MA1992854707
- Krishna Agarwal, M.B.B.S.Springfield, MA1477916120
- Ahsan Alam, M.D.Boston, MA1598885980
- David Albert, M.D.Pittsfield, MA1386692531
- Saif Alenizi, M.D., M.P.H.Boston, MA1255680997
- Howard Alfred, M.D.Worcester, MA1942283627
Common questions
What is Caroline Hsu, M.D.'s NPI number?
Caroline Hsu, M.D.'s National Provider Identifier (NPI) is 1972957207, issued on Apr 23, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Caroline Hsu, M.D. located?
The NPPES record lists a practice address at 800 Washington St, Boston, MA, 02111. Phone: (617) 636-8421. Providers update this record themselves, so call before visiting.
How can I verify Caroline Hsu, M.D.'s license?
NPPES lists Massachusetts license number 278398, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://www.mass.gov/orgs/board-of-registration-in-medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Caroline Hsu, M.D. prescribe under Medicare Part D?
In 2024, Caroline Hsu, M.D. had 411 Medicare Part D claims for 22 beneficiaries; the average among nephrology physician prescribers was 1,511. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.