Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. William John Parkes IV, M.D.

Pediatric Otolaryngology Physician in Wilmington, DE · enumerated 2009.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1821231028

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Registry record

Entity type Individual (Type 1)

Name Dr. William John Parkes IV

Credential M.D.

Sex Male

Practice address Wilmington, DE, 19803

Phone (215) 498-2493

Enumeration date Apr 17, 2009

Last updated in NPPES Jun 5, 2018

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

261QA1903X Ambulatory Surgical Clinic/Center Ambulatory Health Care Facilities · License 25MA09926600 (NJ) Secondary

282N00000X General Acute Care Hospital Hospitals · License MD457694 (PA) Secondary

282NC2000X Children's Hospital Hospitals · License C1-0011815 (DE) Secondary

207YP0228X Pediatric Otolaryngology Physician Allopathic & Osteopathic Physicians · License C1-0011815 (DE) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

How do I verify William Parkes's NPI record?

Cross-check NPI 1821231028 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1821231028 active?

Yes, as of the latest NPPES snapshot, NPI 1821231028 is active (record last updated 2018-06-05).

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Lee Pachter Pediatrics Physician · Wilmington, DE NPI 1306844345 Rhoda Powell Plastic and Reconstructive Surgery Physician · Wilmington, DE NPI 1669460531 Sue Moyer Harasink Genetic Counselor (M.S.) · Wilmington, DE NPI 1679562177 Leonard Goldsmith Neonatal-Perinatal Medicine Physician · Wilmington, DE NPI 1538159439 Jane Ierardi Neonatal-Perinatal Medicine Physician · Wilmington, DE NPI 1720078504 Daniel Dirnberger Neonatal-Perinatal Medicine Physician · Wilmington, DE NPI 1467435438 Margaret Chou Obstetrics & Gynecology Physician · Wilmington, DE NPI 1902880651 Lauren Gilbert Physician Assistant · Wilmington, DE NPI 1336128347

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-06-05.