WILLIAM ALLARD ESTEP DO
NPI 1346818143
Internal Medicine in Joplin, MO
About William Allard Estep Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WILLIAM ALLARD ESTEP DO (NPI 1346818143) is an individual internal medicine provider in Joplin, Missouri, licensed in Missouri (20250276340) and active in the NPI registry since June 2021. He is enrolled in Medicare PECOS, is affiliated with Mercy Hospital Joplin, and is a graduate of Other (2022).
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 Allard Estep Do 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 Estep reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Joplin, MO 64804
- Reassigned Medicare billing, Missouri enrollment
- 427 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.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mercy Hospital Joplin
Acute Care Hospitals · Joplin, MOFreeman Health System - Freeman West
Acute Care Hospitals · Joplin, MOFreeman Neosho Hospital
Critical Access Hospitals · Neosho, MOPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 64804 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 4
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 Estep's NPI number?
The NPI number for William Estep is 1346818143. It was assigned to this individual provider in the NPPES registry on June 16, 2021.
Where is William Estep located?
William Estep practices at 3202 Mcintosh Cir Ste 201, Joplin, MO 64804. The listed phone number is (417) 347-8733.
What is William Estep's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is William Estep enrolled in Medicare?
Yes. William Estep 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 Estep's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Estep reassigns Medicare benefits to Freeman-Oak Hill Health System (Joplin, MO). 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 Estep's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does William Estep accept?
Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Arkansas Health & Wellness, Ambetter from Sunflower Health Plan and Ambetter of Oklahoma and 4 other insurers list William Estep 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 Estep affiliated with any hospitals?
According to CMS data, William Estep is affiliated with Mercy Hospital Joplin, Freeman Health System - Freeman West and Freeman Neosho Hospital.
When was this NPI record last updated?
The NPPES record for William Estep was last updated on July 8, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.
# William Allard Estep, DO · NPI 1346818143
Internal Medicine physician in Joplin, Missouri. Individual provider, active in the CMS NPPES registry since June 16, 2021.
## Identity
- **NPI:** 1346818143 (Entity type: Individual)
- **Enumerated:** June 16, 2021
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 20250276340 (Missouri)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 3202 MCINTOSH CIR STE 201, Joplin, MO 64804-3686
- **Phone:** (417) 347-8733
## 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:** Freeman-Oak Hill Health System (NPI 1679517023, Joplin, MO), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2022
## Record status
- **NPPES last updated:** July 8, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1346818143) · Data from the CMS NPPES public registry.