Leslie R Kowalski, PHD, Ibclc LLC

Primary specialty

Lactation Consultant (Non-RN)Taxonomy code 174N00000X

Legal business name

LESLIE R KOWALSKI, PHD, IBCLC LLC

Practice address

231 Clarksville Rd Ste 4C
West Windsor, NJ 08550-5300

Phone

(609) 200-1409

NPI assigned

Feb 23, 2026

Organization subpart

No

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

Authorized official

Name

Dr. Leslie Kowalski, PHD, IBCLCNPI 1205245537

Title

Ibclc

Phone

(908) 715-5454

Specialties & licenses 1

Addresses

Other names 1

• Lactation Solutions of Princeton Doing business as

Locations

Practitioners 1

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

• Leslie R Kowalski, PHD, IBCLC

  • Lactation Consultant (Non-RN)
  • Plainsboro, NJ
  • NPI 1205245537

  Lactation Consultant, Non-RN

  NPD Authorized official

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

{
    "created_epoch": "1771804800000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1772496000000",
    "number": "1386598993",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "7 JEFFERS RD",
            "city": "PLAINSBORO",
            "state": "NJ",
            "postal_code": "085361901",
            "telephone_number": "908-715-5454",
            "fax_number": "888-216-1506"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "231 CLARKSVILLE RD STE 4C",
            "city": "WEST WINDSOR",
            "state": "NJ",
            "postal_code": "085505300",
            "telephone_number": "609-200-1409"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "LESLIE R KOWALSKI, PHD, IBCLC LLC",
        "organizational_subpart": "NO",
        "enumeration_date": "2026-02-23",
        "last_updated": "2026-03-03",
        "certification_date": "2026-03-03",
        "status": "A",
        "authorized_official_last_name": "KOWALSKI",
        "authorized_official_first_name": "LESLIE",
        "authorized_official_title_or_position": "IBCLC",
        "authorized_official_telephone_number": "908-715-5454",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "PHD, IBCLC"
    },
    "taxonomies": [
        {
            "code": "174N00000X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Lactation Consultant, Non-RN",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "Lactation Solutions of Princeton",
            "code": "3",
            "type": "Doing Business As"
        }
    ]
}

• Kevin T Coyle DMD PA
• Megan Kilcoyne, OTD
• Jay P Kim, RPH
• Kucz Home Care Inc D/B/a Caring Matters Home Care
• Kathleen Marie Kutalek, D.D.S.
• Samantha Lynn Levonaitis, BCBA
• Jeffrey Litwin, MD
• Matthew Christian Lochetto, D.M.D.
• Hank Lubin, MD
• Narendra Luhadiya, RPH

• Lactation Consultant (Non-RN) in West Windsor, NJ
• Providers in West Windsor, NJ by specialty
• Lactation Consultant (Non-RN) in New Jersey

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 3, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.