WILLIAM ANTHONY ADCOCK AGACNP
NPI 1225894264
Nurse Practitioner - Critical Care Medicine in Hattiesburg, MS
About William Anthony Adcock Agacnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WILLIAM ANTHONY ADCOCK AGACNP (NPI 1225894264) is an individual critical care medicine provider in Hattiesburg, Mississippi, licensed in Mississippi (905300) and active in the NPI registry since February 2024. He is enrolled in Medicare PECOS, is affiliated with Forrest General Hospital, and is a graduate of Other (2018).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
William Anthony Adcock Agacnp is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show William Adcock reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Hattiesburg, MS 39401
- Reassigned Medicare billing, Mississippi enrollment
- 696 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.
Areas of Expertise CMS Part B claims 3
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Forrest General Hospital
Acute Care Hospitals · Hattiesburg, MSPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 39401 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
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 Adcock's NPI number?
The NPI number for William Adcock is 1225894264. It was assigned to this individual provider in the NPPES registry on February 27, 2024.
Where is William Adcock located?
William Adcock practices at 415 S 28th Ave, Hattiesburg, MS 39401. The listed phone number is (601) 268-5650.
What is William Adcock's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Critical Care Medicine, with taxonomy code 363LC0200X.
Is William Adcock enrolled in Medicare?
Yes. William Adcock is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for William Adcock's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Adcock reassigns Medicare benefits to Hattiesburg Clinic PA (Hattiesburg, MS). 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 Adcock's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does William Adcock accept?
Health plans from Ambetter Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter of Alabama and Ambetter of Tennessee and 1 other insurer list William Adcock 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.
Is William Adcock affiliated with any hospitals?
According to CMS data, William Adcock is affiliated with Forrest General Hospital.
When was this NPI record last updated?
The NPPES record for William Adcock was last updated on February 27, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# William Anthony Adcock, AGACNP · NPI 1225894264
Critical Care Medicine physician in Hattiesburg, Mississippi. Individual provider, active in the CMS NPPES registry since February 27, 2024.
## Identity
- **NPI:** 1225894264 (Entity type: Individual)
- **Enumerated:** February 27, 2024
- **Primary specialty:** Nurse Practitioner - Critical Care Medicine · taxonomy 363LC0200X
- **State license:** 905300 (Mississippi)
- **Sole proprietor:** No
## Practice location
- **Address:** 415 S 28TH AVE, Hattiesburg, MS 39401-7246
- **Phone:** (601) 268-5650 · **Fax:** (601) 579-5212
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Hattiesburg Clinic PA (NPI 1043392459, Hattiesburg, MS), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2018
## Record status
- **NPPES last updated:** February 27, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1225894264) · Data from the CMS NPPES public registry.