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ADRIAN WILLIAMSON IV MD
NPI 1003310855
Otolaryngology - Plastic Surgery within the Head & Neck in Little Rock, AR

Active since March 19, 2018PECOS Enrolled
1 CHILDRENS WAY # 832, LITTLE ROCK, AR 72202(501) 364-1100(501) 364-4082 Get Directions Write a Review

NPPES record last updated: November 19, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Nov 19, 2025, Sep 17, 2024, Sep 10, 2024 and 2 more (5 updates tracked since 2018).

About Adrian Williamson Iv Md NPPES

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

ADRIAN WILLIAMSON IV MD (NPI 1003310855) is an individual plastic surgery within the head & neck provider in Little Rock, Arkansas, licensed in Arkansas (E-18135) and active in the NPI registry since March 2018. He is enrolled in Medicare PECOS and maintains a secondary practice location in Little Rock.

NPPES Registry Identity

NPI1003310855
Entity TypeIndividualMale
Primary Taxonomy207YX0007X
Provider Legal NameADRIAN WILLIAMSON IVCredential: MD
Location Address1 CHILDRENS WAY # 832Little Rock, AR 72202-3500
Mailing Address1 Childrens Way # 653Little Rock, AR 72202-3500 · (501) 364-1100 · Fax (501) 364-4082
Phone(501) 364-1100
Fax(501) 364-4082
Sole ProprietorNo
Enumeration DateMarch 19, 2018
Last NPPES UpdateNovember 19, 20255 updates tracked since enumeration
NPPES CertifiedNovember 19, 2025
✔ NPI 1003310855 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyOtolaryngology · Plastic Surgery within the Head & NeckAllopathic & Osteopathic Physicians
Taxonomy Code207YX0007X
License✔ Licensed in AR · E-18135
Definition
An otolaryngologist with additional training in plastic and reconstructive procedures within the head, face, neck and associated structures, including cutaneous head and neck oncology and reconstruction, management of maxillofacial trauma, soft tissue repair and neural surgery. The field is diverse and involves a wide age range of patients, from the newborn to the aged. While both cosmetic and reconstructive surgeries are practiced, there are many additional procedures which interface with them.
Also ListedOtolaryngologyTaxonomy 207Y00000X · License 023022999 (MO)
Also ListedOtolaryngology · Pediatric OtolaryngologyTaxonomy 207YP0228X · License E-18135 (AR)
1 CHILDRENS WAY # 832, Little Rock, AR 72202
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Secondary Practice Location 1

Location 14301 W Markham St # 543Little Rock, AR 72205-7101 · Phone (501) 686-8000 · Fax (501) 526-5148

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and more.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Adrian Williamson Iv 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 Reassignments

3

Medicare enrollment records show Adrian Williamson reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Arkansas Childrens Hospital
1.5 mi
Pediatrics
1 CHILDRENS WAY # 664
Little Rock, AR 72202
  • Reassigned Medicare billing, Arkansas enrollment
  • 944 clinicians in this Medicare group
NPI 1598773079 (501) 364-2526
University Of Arkansas For Medical Sciences
3.9 mi
Family Medicine
1401 W CAPITOL AVE
Little Rock, AR 72201
  • Reassigned Medicare billing, Arkansas enrollment
  • Also billed through NPI 1114255353 (Arkansas)
  • 2,038 clinicians in this Medicare group
NPI 1932872975 (501) 686-8000
Arkansas Childrens Professional Services Organization LLC
4.0 mi
Pediatrics
1 CHILDRENS WAY
Little Rock, AR 72202
  • Reassigned Medicare billing, Arkansas enrollment
  • 653 clinicians in this Medicare group
NPI 1629889464 (501) 364-2526

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 Adrian Williamson's NPI number?

The NPI number for Adrian Williamson is 1003310855. It was assigned to this individual provider in the NPPES registry on March 19, 2018.

Where is Adrian Williamson located?

Adrian Williamson practices at 1 Childrens Way # 832, Little Rock, AR 72202. The listed phone number is (501) 364-1100.

What is Adrian Williamson's specialty?

The primary specialty registered for this NPI is Otolaryngology, specializing in Plastic Surgery within the Head & Neck, with taxonomy code 207YX0007X.

Is Adrian Williamson enrolled in Medicare?

Yes. Adrian Williamson is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Adrian Williamson's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Adrian Williamson reassigns Medicare benefits to 3 organizations: Arkansas Childrens Hospital (Little Rock, AR), University Of Arkansas For Medical Sciences (Little Rock, AR) and Arkansas Childrens Professional Services Organization LLC (Little Rock, AR). Each 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 Adrian Williamson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Adrian Williamson accept?

Health plans from Ambetter Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and Ambetter of Oklahoma and 4 other insurers list Adrian Williamson 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 Adrian Williamson was last updated on November 19, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.