Alexandra N. Willauer, MD
Hospitalist Physician · Boston, MA
Alexandra N. Willauer, MD is a hospitalist physician with a practice address in Boston, Massachusetts, and NPI 1386271666, issued on Mar 25, 2020. Check the license (Massachusetts 1024564, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Alexandra N. Willauer
- Credential
- MD
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License numbers
- 1024564 MA
35.147077 OH
Self-reported in NPPES; status is on the state search - Practice location
- 55 Fruit St, Boston, MA 02114
- Phone
- (617) 726-2426
- Enumerated
- Mar 25, 2020
- Record last updated
- Jul 10, 2025
- Medicare enrollment
- Enrolled (PECOS I20250910004580); accepts Medicare assignment
- Medical or professional school
- Texas Tech University Health Science Center School Of Medicine, 2020
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 525 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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- Megan Abbott, MDAnesthesiology Physician1730839333
- Moustafa AbdallaStudent in an Organized Health Care Education/Training Program1952046062
- Shadi Abdar Esfahani, MD, MPHDiagnostic Radiology Physician1497137590
Verify Alexandra N. Willauer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 1024564Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average hospitalist physician in 2024
30 Medicare Part D claims for 16 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D.
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.
Bills Medicare through one group practice
- Massachusetts General Physicians Organization IncBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alexandra N. Willauer among 525 hospitalist physician records in Massachusetts
Alexandra N. Willauer, MD is one of 525 hospitalist physician records with a practice address in Massachusetts. 92% 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 77% of them.
- NPI issued2020 · 77% of these records are older, 16% newer
- In a Medicare fileYes · 92% of these records are
- In the CMS Doctors and Clinicians fileYes · 86% of these records are
- Graduated2020 · median 2012 among the 449 with a school on file
- Record last updated2025 · 36% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in Massachusetts
There are 525 hospitalist physician records in Massachusetts.
All 525 in Massachusetts → Every provider in Boston → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Rani Bhatia, M.D.Boston, MA 021141558717652
- Allison Bond, MDBoston, MA 021141346653490
- Erik Dove, MD, MPHBoston, MA 021141164058293
- Robert Flaherty, M.D.Boston, MA 021141528005238
- Denisa Gace, D.O.Boston, MA 021141356674287
- Syeda Hasan, MDBoston, MA 021141215592696
- An-Qi Hu, M.D.Boston, MA 021141083028534
- Azade Izadi, M.D.Boston, MA 021141801051321
Common questions
What is Alexandra N. Willauer, MD's NPI number?
Alexandra N. Willauer, MD's National Provider Identifier (NPI) is 1386271666, issued on Mar 25, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Alexandra N. Willauer, MD located?
The NPPES record lists a practice address at 55 Fruit St, Boston, MA, 02114. Phone: (617) 726-2426. Providers update this record themselves, so call before visiting.
How can I verify Alexandra N. Willauer, MD's license?
NPPES lists Massachusetts license number 1024564, 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 Alexandra N. Willauer, MD prescribe under Medicare Part D?
In 2024, Alexandra N. Willauer, MD had 30 Medicare Part D claims for 16 beneficiaries; the average among hospitalist physician prescribers was 521. 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.