Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DAVID S LESLIE M.D.
NPI 1114966645
Pediatrics in Boston, MA

Q: What is David Leslie's NPI number?

The NPI number for David Leslie is 1114966645. It was assigned to this individual provider in the NPPES registry on June 6, 2006.

Q: What is David Leslie's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Q: When was this NPI record last updated?

The NPPES record for David Leslie was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 29 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since June 06, 2006

300 LONGWOOD AVE, FEGAN 6, BOSTON, MA 02115(617) 355-6117 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

On this page

About David S Leslie M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DAVID S LESLIE M.D. (NPI 1114966645) is an individual pediatrics provider in Boston, Massachusetts, licensed in Massachusetts (159434) and active in the NPI registry since June 2006.

NPPES Registry Identity

NPI1114966645

Entity TypeIndividualMale

Primary Taxonomy208000000X

Provider Legal NameDAVID S LESLIECredential: M.D.

Location Address300 LONGWOOD AVE, FEGAN 6Boston, MA 02115-5724

Mailing Address152 Cedar StWellesley, MA 02481-5510 · (617) 355-6117

Phone(617) 355-6117

Sole ProprietorNo

Enumeration DateJune 6, 2006

Last NPPES UpdateJuly 13, 2026

✔ NPI 1114966645 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians

Taxonomy Code208000000X

License✔ Licensed in MA · 159434

Definition

A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.

300 LONGWOOD AVE, Boston, MA 02115

Open in Google Maps ↗

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

JULIE ANN HANSEN LCSW

Social Worker (Clinical)

300 LONGWOOD AVE
BOSTON, MA 02115

Suffolk County (857) 218-4309

MS. ANNA ROGLIERI

Nurse Practitioner (Psychiatric/Mental Health)

300 LONGWOOD AVE
BOSTON, MA 02115

Suffolk County (617) 355-6000

STEPHEN G. FLYNN M.D.

Anesthesiology (Pediatric Anesthesiology)

300 LONGWOOD AVE
BOSTON, MA 02115

Suffolk County (617) 355-6000

MISS LAUREN ASHLEY MASTERSON P.T., D.P.T

Physical Therapist

300 LONGWOOD AVE
BOSTON, MA 02115

Suffolk County (617) 355-7216

MS. SOYUN KWAN LICSW

Social Worker (Clinical)

300 LONGWOOD AVE, CHILDREN'S HOSPITAL BOSTON
BOSTON, MA 02115

Suffolk County (617) 355-0567

PUJA BANKA M.D.

Pediatrics

300 LONGWOOD AVE, BADER 203
BOSTON, MA 02115

Suffolk County (617) 355-6363

MR. COURTNEY SULLIVAN FRATTO CPNP

Nurse Practitioner (Pediatrics)

300 LONGWOOD AVE, HUNNEWELL BUILDING 322
BOSTON, MA 02115

Suffolk County (857) 218-4085

DR. ELIZABETH S TAGLAUER M.D., PH.D.

Pediatrics (Neonatal-Perinatal Medicine)

300 LONGWOOD AVE
BOSTON, MA 02115

Suffolk County (617) 355-6000

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is David Leslie's NPI number?

The NPI number for David Leslie is 1114966645. It was assigned to this individual provider in the NPPES registry on June 6, 2006.

Where is David Leslie located?

David Leslie practices at 300 Longwood Ave Fegan 6, Boston, MA 02115. The listed phone number is (617) 355-6117.

What is David Leslie's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

When was this NPI record last updated?

The NPPES record for David Leslie was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 29 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.