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MARI E. WELCH APN
NPI 1538433479
Nurse Practitioner - Pediatrics in Wilmington, DE

Active since February 23, 2012PECOS Enrolled
1600 ROCKLAND RD, WILMINGTON, DE 19803(302) 651-4200(302) 651-5365 Get Directions Write a Review

NPPES record last updated: September 29, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Mari E. Welch Apn NPPES

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

MARI E. WELCH APN (NPI 1538433479) is an individual pediatrics provider in Wilmington, Delaware, licensed in Delaware (LJ0000273) and active in the NPI registry since February 2012. She is enrolled in Medicare PECOS and is a graduate of Other (2011).

NPPES Registry Identity

NPI1538433479
Entity TypeIndividualFemale
Primary Taxonomy363LP0200X
Provider Legal NameMARI E. WELCHCredential: APN
Location Address1600 ROCKLAND RDWilmington, DE 19803-3607
Mailing Address640 S State StDover, DE 19901-3530 · (302) 674-4700
Phone(302) 651-4200
Fax(302) 651-5365
Sole ProprietorNo
Medical School CMSOtherGraduated 2011
Enumeration DateFebruary 23, 2012
Last NPPES UpdateSeptember 29, 2025
NPPES CertifiedSeptember 29, 2025
✔ NPI 1538433479 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · PediatricsPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LP0200X
License✔ Licensed in DE · LJ0000273
1600 ROCKLAND RD, Wilmington, DE 19803
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Other Names 1

Former Name (1)Mari Panciroli

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include AmeriHealth Caritas Next, Highmark Blue Cross Blue Shield Delaware.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mari E. Welch Apn is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID7517475874
PECOS Enrollment IDI20250806002820
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.

JOANNA COSTA MD
Pediatrics (Neonatal-Perinatal Medicine)
1600 ROCKLAND RD
WILMINGTON, DE 19803
New Castle County (302) 651-5795
LAURA MARIE KISZKIEL MD
Obstetrics & Gynecology
1600 ROCKLAND RD
WILMINGTON, DE 19803
New Castle County (302) 651-4200
ALLYSON JANE MENARD SLP
Speech-Language Pathologist
1600 ROCKLAND RD
WILMINGTON, DE 19803
New Castle County (302) 651-4200
SALWA ELIZABETH SULIEMAN D.O.
Pediatrics (Pediatric Infectious Diseases)
1600 ROCKLAND RD
WILMINGTON, DE 19803
New Castle County (302) 651-4200
DR. WAYNE S MOORE II PHARMD
Pharmacist (Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist)
1600 ROCKLAND RD
WILMINGTON, DE 19803
New Castle County (302) 651-5700
DR. LAUREN ASHLEY MAY M.D.
Radiology (Pediatric Radiology)
1600 ROCKLAND RD
WILMINGTON, DE 19803
New Castle County (302) 651-4200
DR. MARY IAMPIETRO PH.D.
Psychologist (Clinical Child & Adolescent)
1600 ROCKLAND RD
WILMINGTON, DE 19803
New Castle County (302) 651-4200
KATHERINE HARRIGAN
Nurse Practitioner
1600 ROCKLAND RD
WILMINGTON, DE 19803
New Castle County (302) 651-4200

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 Mari Welch's NPI number?

The NPI number for Mari Welch is 1538433479. It was assigned to this individual provider in the NPPES registry on February 23, 2012. The provider is also known as Mari Panciroli.

Where is Mari Welch located?

Mari Welch practices at 1600 Rockland Rd, Wilmington, DE 19803. The listed phone number is (302) 651-4200.

What is Mari Welch's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Pediatrics, with taxonomy code 363LP0200X.

Is Mari Welch enrolled in Medicare?

Yes. Mari Welch is registered in the Medicare PECOS enrollment system.

What insurance does Mari Welch accept?

Health plans from AmeriHealth Caritas Next and Highmark Blue Cross Blue Shield Delaware list Mari Welch 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 Mari Welch was last updated on September 29, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.