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WASHINGTON SQUARE PEDIATRICS, P-LLP
NPI 1245124296
Pediatrics in Brookline, MA

Active since June 04, 2025CLIA 22D0698866 · Waiver
637 WASHINGTON ST STE 202, BROOKLINE, MA 02446(617) 232-2811 Get Directions Write a Review

NPPES record last updated: June 4, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Washington Square Pediatrics, P-llp NPPES

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

WASHINGTON SQUARE PEDIATRICS, P-LLP (NPI 1245124296), doing business as Sally S. Roth, M.d., Susan B. Laster, M.d., Cara S. Guenther, M.d., is a healthcare organization registered as a pediatrics in Brookline, Massachusetts and active in the NPI registry since June 2025. The organization holds a CLIA Waiver certificate valid through March 28, 2027 and lists Cara Guenther, Partner, as its authorized official.

NPPES Registry Identity

NPI1245124296
Entity TypeOrganization
Primary Taxonomy208000000X
Legal Business NameWASHINGTON SQUARE PEDIATRICS, P-LLP
Location Address637 WASHINGTON ST STE 202Brookline, MA 02446-4579
Mailing Address637 Washington St Ste 202Brookline, MA 02446-4579 · (617) 232-2811
Phone(617) 232-2811
Organization SubpartNo
Authorized OfficialCara GuentherPartner · (617) 232-2811
Enumeration DateJune 4, 2025
NPPES CertifiedJune 3, 2025
✔ NPI 1245124296 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
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.
637 WASHINGTON ST STE 202, Brookline, MA 02446
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Other Names 1

Doing Business AsSally S. Roth, M.d., Susan B. Laster, M.d., Cara S. Guenther, M.d.

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 22D0698866

Washington Square Pediatrics P-Llp · Brookline, MA
Active · expires Mar 28, 2027
CLIA Number22D0698866
Laboratory TypePhysician Office
Certificate Effective DateMarch 29, 2025
Certificate Expiration DateMarch 28, 2027
Laboratory DirectorSally S. Roth
Laboratory Phone(617) 232-2811
Laboratory LocationWashington Square Pediatrics P-Llp637 Washington Street, Brookline, MA 02446
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Other Providers at the Same Location NPPES 3

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

SHANNON FERNANDEZ-LEDON
Pediatrics
637 WASHINGTON ST STE 202
BROOKLINE, MA 02446
Norfolk County (617) 232-2811
DR. CARA SCARLETT GUENTHER MD
Pediatrics
637 WASHINGTON ST STE 202
BROOKLINE, MA 02446
Norfolk County (617) 232-2811
MAGDALENA IVANOVA MD
Pediatrics
637 WASHINGTON ST STE 202
BROOKLINE, MA 02446
Norfolk County (617) 232-2811

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 Washington Square Pediatrics, P-Llp's NPI number?

The NPI number for Washington Square Pediatrics, P-Llp is 1245124296. It was assigned to this organization in the NPPES registry on June 4, 2025. The provider is doing business as Sally S. Roth, M.D., Susan B. Laster, M.D., Cara S. Guenther, M.D..

Where is Washington Square Pediatrics, P-Llp located?

Washington Square Pediatrics, P-Llp is located at 637 Washington St Ste 202, Brookline, MA 02446. The listed phone number is (617) 232-2811.

What is Washington Square Pediatrics, P-Llp's specialty?

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

Does Washington Square Pediatrics, P-Llp hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 22D0698866) is associated with this NPI, valid through March 28, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Washington Square Pediatrics, P-Llp was last updated on June 4, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 months 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.