Mallory Lesieur, M.D.
NPI 1154784510 · Pulmonary Disease Physician · Boston, MA
Enrolled with Medicare as Practitioner - Pulmonary Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mallory Lesieur, M.D. is a Pulmonary Disease Physician provider in Boston, MA (NPI 1154784510).
Provider details
- NPI number
- 1154784510
- Entity type
- Individual
- Primary specialty
- Pulmonary Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 288044 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
10 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
307 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 131 | $90 |
| Critical Care, First 30-74 Minutes99291 | 47 | $198 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 42 | $60 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 24 | $124 |
| Test to Measure Expiratory Airflow and Volume94010 | 17 | $8 |
| Test to Measure Expiratory Airflow and Volume Changes Before and After Medication Administration94060 | 17 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 24 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 164 | 77 |
| Fluticasone/Umeclidin/Vilanterbrand: Trelegy Ellipta | 153 | 50 |
| Prednisone | 108 | 67 |
| Fluticasone Propionate | 55 | 33 |
| Budesonide/Formoterol Fumaratebrand: Symbicort | 50 | 23 |
| Azithromycin | 41 | 28 |
| Montelukast Sodium |
Practice location
Mailing address
Additional practice locations (1)
- 50 N Medical DrSalt Lake City, UT 84132-0001Phone: (801) 581-2121
Registry dates
- Enumerated
- 2016-04-03
- Last updated
- 2023-07-21
- Certified
- 2023-07-21
Frequently asked questions
- What is Mallory Lesieur's NPI number?
- Mallory Lesieur's National Provider Identifier (NPI) is 1154784510, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mallory Lesieur's specialty?
- Mallory Lesieur is listed in the NPPES registry with a primary specialty of Pulmonary Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Mallory Lesieur located?
- Mallory Lesieur's practice location on file with NPPES is 72 East Concord Street, Boston, MA 02118-2690.
- What is Mallory Lesieur's phone number?
- The practice phone number listed in the NPPES registry for Mallory Lesieur is (617) 358-1340.
- Does Mallory Lesieur accept Medicare?
- Mallory Lesieur is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mallory Lesieur's NPI active?
- Yes — Mallory Lesieur's NPI (1154784510) is active in the NPPES registry as of the last update on 2023-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.