DR. WILLIAM JOHN PARKES IV M.D.
NPI 1821231028
Otolaryngology - Pediatric Otolaryngology in Wilmington, DE
About Dr. William John Parkes Iv M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. WILLIAM JOHN PARKES IV M.D. (NPI 1821231028) is an individual pediatric otolaryngology provider in Wilmington, Delaware, licensed in Delaware (C1-0011815) and active in the NPI registry since April 2009. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 4
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. William John Parkes Iv M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show William Parkes reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Deptford, NJ 08096
- Reassigned Medicare billing, New Jersey enrollment
- Medicare enrollment name: Nemours New Jersey Physician Practice PC
- 183 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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.
WILMINGTON, DE 19803
WILMINGTON, DE 19803
WILMINGTON, DE 19803
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 William Parkes's NPI number?
The NPI number for William Parkes is 1821231028. It was assigned to this individual provider in the NPPES registry on April 17, 2009.
Where is William Parkes located?
William Parkes practices at 1600 Rockland Rd, Wilmington, DE 19803. The listed phone number is (215) 498-2493.
What is William Parkes's specialty?
The primary specialty registered for this NPI is Otolaryngology, specializing in Pediatric Otolaryngology, with taxonomy code 207YP0228X.
Is William Parkes enrolled in Medicare?
Yes. William Parkes is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for William Parkes's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Parkes reassigns Medicare benefits to Nemours New Jersey Physician Practice, P.C. (Deptford, NJ). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for William Parkes's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does William Parkes accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from NH Healthy Families, Ambetter from Sunflower Health Plan and AmeriHealth Caritas Next and 1 other insurer list William Parkes 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 William Parkes was last updated on June 5, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 years 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.
# Dr. William John Parkes IV, M.D. · NPI 1821231028
Pediatric Otolaryngology physician in Wilmington, Delaware. Individual provider, active in the CMS NPPES registry since April 17, 2009.
## Identity
- **NPI:** 1821231028 (Entity type: Individual)
- **Enumerated:** April 17, 2009
- **Primary specialty:** Otolaryngology - Pediatric Otolaryngology · taxonomy 207YP0228X
- **State license:** C1-0011815 (Delaware)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1600 ROCKLAND RD, Wilmington, DE 19803
- **Phone:** (215) 498-2493
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Nemours New Jersey Physician Practice, P.C. (NPI 1265874713, Deptford, NJ), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** June 5, 2018
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Source: [NPI Profile](https://npiprofile.com/npi/1821231028) · Data from the CMS NPPES public registry.