Mallory N. Lesieur, M.D.
Pulmonary Disease Physician · Boston, MA
Mallory N. Lesieur, M.D. is a pulmonary disease physician with a practice address in Boston, Massachusetts, and NPI 1154784510, issued on Apr 3, 2016. Check the license (Massachusetts 288044, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Mallory N. Lesieur
- Credential
- M.D.
- Primary taxonomy
- Pulmonary Disease Physician 207RP1001X
- License number
- 288044 MA
Self-reported in NPPES; status is on the state search - Practice location
- 72 East Concord Street, Boston, MA 02118
- Phone
- (617) 358-1340
- Enumerated
- Apr 3, 2016
- Record last updated
- Jul 21, 2023
- Fax
- (617) 358-1337
- Medicare enrollment
- Enrolled (PECOS I20231016000581); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest pulmonary disease physician records → All 569 in Massachusetts → Look up another NPI →
Also registered at 72 East Concord Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Abigail Carrier, NPAcute Care Nurse Practitioner1336032275
- Danielle Davis, MDStudent in an Organized Health Care Education/Training Program1386393536
- Zi Jun Deng, MDStudent in an Organized Health Care Education/Training Program1982280657
- Josue Estrella, MDStudent in an Organized Health Care Education/Training Program1093417677
- Laurynn GarciaStudent in an Organized Health Care Education/Training Program1851151799
- Amy Habib, MDStudent in an Organized Health Care Education/Training Program1376292854
Verify Mallory N. Lesieur in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 288044Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
28% fewer Medicare Part D claims than the average pulmonary disease physician in 2024
1,030 Medicare Part D claims for 258 beneficiaries, against an average of 1,425 among the 11,596 providers of this specialty who prescribed in Part D. Brand-name drugs were 58% of claims.
Most prescribed
- Albuterol Sulfate Hfa164 claims
- Trelegy Ellipta153 claims
- Prednisone108 claims
- Fluticasone Propionate55 claims
- Symbicort50 claims
- Azithromycin41 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 affiliation
- Central Maine Medical CenterLewiston, ME · Acute Care Hospitals4 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Mallory N. Lesieur among 569 pulmonary disease physician records in Massachusetts
Mallory N. Lesieur, M.D. is one of 569 pulmonary disease physician records with a practice address in Massachusetts. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 87% of them.
- NPI issued2016 · 87% of these records are older, 9% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2016 · median 2003 among the 407 with a school on file
- Record last updated2023 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RP1001X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pulmonary Disease Physician providers in Massachusetts
There are 569 pulmonary disease physician records in Massachusetts.
All 569 in Massachusetts → Every provider in Boston → Pulmonary Disease Physician nationwide →
The 8 pulmonary disease physician records with the nearest ZIP codes
- John Berk, M.D.Boston, MA 021181407831258
- Jeffrey Berman, M.D.Boston, MA 021181083699466
- John Bernardo, MDBoston, MA 021181063477040
- Christine Campbell-Reardon, M.D.Boston, MA 021181780669671
- David Center, MDBoston, MA 021181932164944
- Jeffrey Drazen, M.D.Boston, MA 021181003892803
- Harrison Farber, M.D.Boston, MA 021181396721841
- Ronald Goldstein, M.D.Boston, MA 021181093791881
Common questions
What is Mallory N. Lesieur, M.D.'s NPI number?
Mallory N. Lesieur, M.D.'s National Provider Identifier (NPI) is 1154784510, issued on Apr 3, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Mallory N. Lesieur, M.D. located?
The NPPES record lists a practice address at 72 East Concord Street, Boston, MA, 02118. Phone: (617) 358-1340. Providers update this record themselves, so call before visiting.
How can I verify Mallory N. Lesieur, M.D.'s license?
NPPES lists Massachusetts license number 288044, 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 Mallory N. Lesieur, M.D. prescribe under Medicare Part D?
In 2024, Mallory N. Lesieur, M.D. had 1,030 Medicare Part D claims for 258 beneficiaries; the average among pulmonary disease physician prescribers was 1,425. 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.