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WILLIAM A MILLS JR. MD
NPI 1215906607
Pediatrics - Pediatric Emergency Medicine in Chapel Hill, NC

Active since March 16, 2006PECOS Enrolled
UNC SCHOOL OF MEDICINE, 231 MACNIDER -- CB #7225, CHAPEL HILL, NC 27599(919) 966-2504(919) 966-3852 Get Directions Write a Review

NPPES record last updated: January 22, 2009. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About William A Mills Jr. Md NPPES

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

WILLIAM A MILLS JR. MD (NPI 1215906607) is an individual pediatric emergency medicine provider in Chapel Hill, North Carolina, licensed in North Carolina (2008-00312) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1215906607
Entity TypeIndividualMale
Primary Taxonomy2080P0204X
Provider Legal NameWILLIAM A MILLS JR.Credential: MD
Location AddressUNC SCHOOL OF MEDICINE, 231 MACNIDER -- CB #7225Chapel Hill, NC 27599-0001
Mailing AddressUnc School Of Medicine, 231 Macnider -- Cb #7225Chapel Hill, NC 27599-0001 · (919) 966-2504 · Fax (919) 966-3852
Phone(919) 966-2504
Fax(919) 966-3852
Sole ProprietorNo
Enumeration DateMarch 16, 2006
Last NPPES UpdateJanuary 22, 2009
✔ NPI 1215906607 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatrics · Pediatric Emergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code2080P0204X
License✔ Licensed in NC · 2008-00312
Definition
A pediatrician who has special qualifications to manage emergencies in infants and children.
Also ListedPediatricsTaxonomy 208000000X · License D0060461 (MD)
UNC SCHOOL OF MEDICINE, Chapel Hill, NC 27599
Open in Google Maps ↗

Other Identifiers 4

Medicaid402877500MD
Other75859901MD · Blue Shield
Medicare UPINH98732
Medicare PIN761LH386MD

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of NC.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

William A Mills Jr. 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.

Medicare Billing Reassignment

Medicare enrollment records show William Mills reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

University Of North Carolina At Chapel Hill
0.2 mi
Anesthesiology
101 MANNING DR
Chapel Hill, NC 27514
  • Reassigned Medicare billing, North Carolina enrollment
  • 2,797 clinicians in this Medicare group
NPI 1780669200 (984) 974-1000

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

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

DR. KENYA A. MCNEAL-TRICE M.D.
Pediatrics
UNC SCHOOL OF MEDICINE, CAMPUS BOX 7593
CHAPEL HILL, NC 27599
Orange County (919) 966-3172

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 Mills's NPI number?

The NPI number for William Mills is 1215906607. It was assigned to this individual provider in the NPPES registry on March 16, 2006.

Where is William Mills located?

William Mills practices at Unc School Of Medicine 231 Macnider -- Cb #7225, Chapel Hill, NC 27599. The listed phone number is (919) 966-2504.

What is William Mills's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Emergency Medicine, with taxonomy code 2080P0204X.

Is William Mills enrolled in Medicare?

Yes. William Mills is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for William Mills's services?

According to the CMS Revalidation Reassignment List (October 2026 release), William Mills reassigns Medicare benefits to University Of North Carolina At Chapel Hill (Chapel Hill, NC). 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 Mills's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does William Mills accept?

Health plans from Blue Cross and Blue Shield of NC list William Mills 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 Mills was last updated on January 22, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.