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

MATILDA SULLIVAN HEWLETT DDS
NPI 1366198467
Dentist - Pediatric Dentistry in Philadelphia, PA

Active since February 28, 2022
1352 SOUTH ST # C5, PHILADELPHIA, PA 19147(267) 909-9551 Get Directions Write a Review

NPPES record last updated: October 27, 2026. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Oct 27, 2026, Oct 31, 2022, Feb 28, 2022 (3 updates tracked since 2022).

About Matilda Sullivan Hewlett Dds NPPES

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

MATILDA SULLIVAN HEWLETT DDS (NPI 1366198467) is an individual pediatric dentistry provider in Philadelphia, Pennsylvania, licensed in Pennsylvania (DS044472) and active in the NPI registry since February 2022. She maintains 2 additional practice locations.

NPPES Registry Identity

NPI1366198467
Entity TypeIndividualFemale
Primary Taxonomy1223P0221X
Provider Legal NameMATILDA SULLIVAN HEWLETTCredential: DDS
Location Address1352 SOUTH ST # C5Philadelphia, PA 19147-1858
Mailing Address2011 Bainbridge St Apt 2Philadelphia, PA 19146-1308 · (434) 610-7021
Phone(267) 909-9551
Sole ProprietorYes
Enumeration DateFebruary 28, 2022
Last NPPES UpdateOctober 27, 20263 updates tracked since enumeration
NPPES CertifiedOctober 27, 2026
✔ NPI 1366198467 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentist · Pediatric DentistryDental Providers
Taxonomy Code1223P0221X
Licenses✔ Licensed in PA · DS044472✔ Licensed in NJ · 22DI03096600
Definition
An age-defined specialty that provides both primary and comprehensive preventive and therapeutic oral health care for infants and children through adolescence, including those with special health care needs.
1352 SOUTH ST # C5, Philadelphia, PA 19147
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Secondary Practice Locations 2

Location 12900 Island Ave Ste 2924Philadelphia, PA 19153-2028 · Phone (215) 492-9291
Location 217 W Ormond Ave # 200Cherry Hill, NJ 08002-3041 · Phone (856) 288-1929

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include BEST Life, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma and more.Insurance ›

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 Matilda Hewlett's NPI number?

The NPI number for Matilda Hewlett is 1366198467. It was assigned to this individual provider in the NPPES registry on February 28, 2022.

Where is Matilda Hewlett located?

Matilda Hewlett practices at 1352 South St # C5, Philadelphia, PA 19147. The listed phone number is (267) 909-9551.

What is Matilda Hewlett's specialty?

The primary specialty registered for this NPI is Dentist, specializing in Pediatric Dentistry, with taxonomy code 1223P0221X.

What insurance does Matilda Hewlett accept?

Health plans from BEST Life, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma, Blue Cross and Blue Shield of Texas and Dominion National and 13 other insurers list Matilda Hewlett as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Matilda Hewlett was last updated on October 27, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.