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DR. LILLIAN MARGARET WALTON MASTERS MD
NPI 1720925803
Pediatrics in Wilmington, DE

Active since April 29, 2026PECOS Enrolled
1600 ROCKLAND RD STE 3D16, WILMINGTON, DE 19803(302) 651-5874(302) 651-5954 Get Directions Write a Review

NPPES record last updated: May 26, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: May 26, 2026, Apr 29, 2026 (2 updates tracked since 2026).

About Dr. Lillian Margaret Walton Masters Md NPPES

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

DR. LILLIAN MARGARET WALTON MASTERS MD (NPI 1720925803) is an individual pediatrics provider in Wilmington, Delaware, licensed in Pennsylvania (MT237349) and active in the NPI registry since April 2026. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1720925803
Entity TypeIndividualFemale
Primary Taxonomy208000000X
Provider Legal NameDR. LILLIAN MARGARET WALTON MASTERSCredential: MD
Location Address1600 ROCKLAND RD STE 3D16Wilmington, DE 19803-3607
Mailing Address1600 Rockland Rd Ste 3d16Wilmington, DE 19803-3607 · (302) 651-5874 · Fax (302) 651-5954
Phone(302) 651-5874
Fax(302) 651-5954
Sole ProprietorNo
Enumeration DateApril 29, 2026
Last NPPES UpdateMay 26, 20262 updates tracked since enumeration
NPPES CertifiedMay 26, 2026
✔ NPI 1720925803 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in PA · MT237349
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.
1600 ROCKLAND RD STE 3D16, Wilmington, DE 19803
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Lillian Margaret Walton Masters Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 19803 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$88.37 typical visit price
range $57.12 – $173.08
Typical copayment $22.09 (range $14.28 – $43.27)
Most-billed visit code 99203
Established Patient
$100.68 typical visit price
range $18.36 – $141.05
Typical copayment $25.17 (range $4.59 – $35.26)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

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

ANNA LACKEY DO
Pediatrics
1600 ROCKLAND RD STE 3D16
WILMINGTON, DE 19803
New Castle County (302) 651-5874
DR. CAITLYN ELIZABETH SMITH DO
Student in an Organized Health Care Education/Training Program
1600 ROCKLAND RD STE 3D16
WILMINGTON, DE 19803
New Castle County (302) 651-5874
KAYLA MORRELL
Student in an Organized Health Care Education/Training Program
1600 ROCKLAND RD STE 3D16
WILMINGTON, DE 19803
New Castle County (302) 651-5874
KELLY RYAN
Student in an Organized Health Care Education/Training Program
1600 ROCKLAND RD STE 3D16
WILMINGTON, DE 19803
New Castle County (302) 651-5874
LONG TING JESSICA MUI MD
Student in an Organized Health Care Education/Training Program
1600 ROCKLAND RD STE 3D16
WILMINGTON, DE 19803
New Castle County (302) 651-5874
CASEY PATRICE SWANN
Student in an Organized Health Care Education/Training Program
1600 ROCKLAND RD STE 3D16
WILMINGTON, DE 19803
New Castle County (302) 651-5874
JACLYN MARIE SCHULTZ DO
Pediatrics
1600 ROCKLAND RD STE 3D16
WILMINGTON, DE 19803
New Castle County (302) 651-5874
MR. BRADY KEVIN STEVENS
Pediatrics
1600 ROCKLAND RD STE 3D16
WILMINGTON, DE 19803
New Castle County (302) 651-5874

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 Lillian Walton Masters's NPI number?

The NPI number for Lillian Walton Masters is 1720925803. It was assigned to this individual provider in the NPPES registry on April 29, 2026.

Where is Lillian Walton Masters located?

Lillian Walton Masters practices at 1600 Rockland Rd Ste 3d16, Wilmington, DE 19803. The listed phone number is (302) 651-5874.

What is Lillian Walton Masters's specialty?

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

Is Lillian Walton Masters enrolled in Medicare?

Yes. Lillian Walton Masters is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Lillian Walton Masters was last updated on May 26, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.