Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 90 days.

ALLISON L WILLIAMS
NPI 1275450033
In Home Supportive Care in Sewickley, PA

Q: What is Allison Williams's NPI number?

The NPI number for Allison Williams is 1275450033. It was assigned to this individual provider in the NPPES registry on July 2, 2026.

Q: What is Allison Williams's specialty?

The primary specialty registered for this NPI is In Home Supportive Care with taxonomy code 253Z00000X.

Q: When was this NPI record last updated?

The NPPES record for Allison Williams was last updated on July 2, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 39 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 July 02, 2026

826 MCDONALD ST, SEWICKLEY, PA 15143(412) 620-8854 Get Directions Write a Review

NPPES record added: July 2, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

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About Allison L Williams NPPES

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

ALLISON L WILLIAMS (NPI 1275450033) is an individual in home supportive care provider in Sewickley, Pennsylvania, licensed in Pennsylvania (93113601) and active in the NPI registry since July 2026. She maintains a secondary practice location in Finleyville.

NPPES Registry Identity

NPI1275450033

Entity TypeIndividualFemale

Primary Taxonomy253Z00000X

Provider Legal NameALLISON L WILLIAMS

Location Address826 MCDONALD STSewickley, PA 15143-1921

Mailing Address826 Mcdonald StSewickley, PA 15143-1921 · (412) 620-8854

Phone(412) 620-8854

Sole ProprietorYes

Enumeration DateJuly 2, 2026

NPPES CertifiedJuly 2, 2026

✔ NPI 1275450033 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyIn Home Supportive CareAgencies

Taxonomy Code253Z00000X

Licenses✔ Licensed in PA · 93113601✔ Licensed in PA · 93143601

Definition

An In Home Supportive Care Agency provides services in the patient's home with the goal of enabling the patient to remain at home. The services provided may include personal care services such as hands-on assistance with activities of daily living (ADLs), e.g., eating, bathing, dressing, and bladder and bowel requirements; homemaker services and instrumental activities of daily living (IADLs), e.g., taking medications, shopping for groceries, laundry, housekeeping, and companionship; and/or supervision or cuing so that a person can perform tasks themselves.

826 MCDONALD ST, Sewickley, PA 15143

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Secondary Practice Location 1

Location 13595 Washington AveFinleyville, PA 15332-1344 · Phone (412) 499-1112

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 Allison Williams's NPI number?

The NPI number for Allison Williams is 1275450033. It was assigned to this individual provider in the NPPES registry on July 2, 2026.

Where is Allison Williams located?

Allison Williams practices at 826 Mcdonald St, Sewickley, PA 15143. The listed phone number is (412) 620-8854.

What is Allison Williams's specialty?

The primary specialty registered for this NPI is In Home Supportive Care with taxonomy code 253Z00000X.

When was this NPI record last updated?

The NPPES record for Allison Williams was last updated on July 2, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 39 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.