Washington Square Pediatrics, P-LLP

Primary specialty

Pediatrics PhysicianTaxonomy code 208000000X

Legal business name

WASHINGTON SQUARE PEDIATRICS, P-LLP

Practice address

637 Washington St Ste 202
Brookline, MA 02446-4579

Phone

(617) 232-2811

NPI assigned

Jun 4, 2025

Organization subpart

No

Registry information is reported by the provider to CMS and is not verified. About this source

Authorized official

Name

Dr. Cara Guenther, MDNPI 1700413960

Title

Partner

Phone

(617) 232-2811

Specialties & licenses 1

Addresses

Other names 1

• Sally S. Roth, M.D., Susan B. Laster, M.D., Cara S. Guenther, M.D. Doing business as

These CMS records do not include an NPI. They are shown because their name and street address match this provider’s.

CLIA laboratory certificates

Locations

Practitioners 6

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.

• Cara Scarlett Guenther, MD

  • Pediatrics Physician
  • Brookline, MA
  • NPI 1700413960
  NPD Authorized official
• Magdalena Ivanova, MD

  • Pediatrics Physician
  • Brookline, MA
  • NPI 1720547524
  NPD
• Shannon Fernandez-Ledon

  • Pediatrics Physician
  • Brookline, MA
  • NPI 1568164424
  NPD (past)
• Susan B Laster, MD

  • Pediatrics Physician
  • Brookline, MA
  • NPI 1952382327
  NPD (past)
• Sally Saunders Roth, M.D.

  • Pediatrics Physician
  • Brookline, MA
  • NPI 1558370999
  NPD (past)
• Sari Joan Rotter, M.D.

  • Pediatrics Physician
  • Brookline, MA
  • NPI 1043360555
  NPD (past)

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1748995200000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1748995200000",
    "number": "1245124296",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "637 WASHINGTON ST STE 202",
            "city": "BROOKLINE",
            "state": "MA",
            "postal_code": "024464579",
            "telephone_number": "617-232-2811"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "637 WASHINGTON ST STE 202",
            "city": "BROOKLINE",
            "state": "MA",
            "postal_code": "024464579",
            "telephone_number": "617-232-2811"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "WASHINGTON SQUARE PEDIATRICS, P-LLP",
        "organizational_subpart": "NO",
        "enumeration_date": "2025-06-04",
        "last_updated": "2025-06-04",
        "certification_date": "2025-06-03",
        "status": "A",
        "authorized_official_last_name": "GUENTHER",
        "authorized_official_first_name": "CARA",
        "authorized_official_title_or_position": "PARTNER",
        "authorized_official_telephone_number": "617-232-2811",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "MD"
    },
    "taxonomies": [
        {
            "code": "208000000X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Pediatrics",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "Sally S. Roth, M.D., Susan B. Laster, M.D., Cara S. Guenther, M.D.",
            "code": "3",
            "type": "Doing Business As"
        }
    ]
}

• Warren J Becker MD Facog
• Warren J Becker MD Facog
• Susan Warren, M.D.
• Julie Allison Washburn
• Washington Square Dermatology,LLC
• Maya Wasson
• Scott David Waugh, PT
• Deidre Waxman
• Anne Weaver, LMHC
• Jessica Weaver, CCC-SLP

• Pediatrics Physician in Brookline, MA
• Providers in Brookline, MA by specialty
• Pediatrics Physician in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 4, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.