CHADWICK LEON SIMPSON M. D.
NPI 1508990730
Emergency Medicine in Harrison, AR
About Chadwick Leon Simpson M. D. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CHADWICK LEON SIMPSON M. D. (NPI 1508990730) is an individual emergency medicine provider in Harrison, Arkansas, licensed in Arkansas (E5205) and active in the NPI registry since March 2007. He is enrolled in Medicare PECOS and is a graduate of Other (2000).
NPPES Registry Identity
Specialties & Licenses
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
Chadwick Leon Simpson M. D. 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 Reassignments
8Medicare enrollment records show Chadwick Simpson reassigns Medicare billing to 8 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Clinton, AR 72031
- Reassigned Medicare billing, Arkansas enrollment
- Also billed through NPI 1992760342 (Arkansas)
- 59 clinicians in this Medicare group
Ozark, AR 72949
- Reassigned Medicare billing, Arkansas enrollment
- 147 clinicians in this Medicare group
Paris, AR 72855
- Reassigned Medicare billing, Arkansas enrollment
- Also billed through NPI 1912955709 (Arkansas)
- 159 clinicians in this Medicare group
Magazine, AR 72943
- Reassigned Medicare billing, Arkansas enrollment
- 146 clinicians in this Medicare group
Nashville, AR 71852
- Reassigned Medicare billing, Arkansas enrollment
- 47 clinicians in this Medicare group
Hope, AR 71801
- Reassigned Medicare billing, Arkansas enrollment
- 323 clinicians in this Medicare group
Crossett, AR 71635
- Reassigned Medicare billing, Arkansas enrollment
- 152 clinicians in this Medicare group
Covington, LA 70433
- Reassigned Medicare billing, Arkansas enrollment
- 150 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 72601 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Chadwick Simpson's NPI number?
The NPI number for Chadwick Simpson is 1508990730. It was assigned to this individual provider in the NPPES registry on March 16, 2007.
Where is Chadwick Simpson located?
Chadwick Simpson practices at 511 Owl St, Harrison, AR 72601. The listed phone number is (903) 280-8889.
What is Chadwick Simpson's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Chadwick Simpson enrolled in Medicare?
Yes. Chadwick Simpson 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 organizations bill Medicare for Chadwick Simpson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Chadwick Simpson reassigns Medicare benefits to 8 organizations: Ozark Health, Inc (Clinton, AR), Mercy Hospital Ozark (Ozark, AR), Mercy Hospital Paris (Paris, AR), Mercy Hospital Booneville (Magazine, AR), Nes Kentucky Inc (Nashville, AR) and 3 more organizations, listed in the Medicare section above. 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 Chadwick Simpson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Chadwick Simpson was last updated on January 7, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.
# Chadwick Leon Simpson, M. D. · NPI 1508990730
Emergency Medicine physician in Harrison, Arkansas. Individual provider, active in the CMS NPPES registry since March 16, 2007.
## Identity
- **NPI:** 1508990730 (Entity type: Individual)
- **Enumerated:** March 16, 2007
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** E5205 (Arkansas)
- **Sole proprietor:** No
## Practice location
- **Address:** 511 OWL ST, Harrison, AR 72601-1850
- **Phone:** (903) 280-8889
## 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:** 8 organizations under Medicare reassignment (form CMS-855R): Ozark Health, Inc (NPI 1366614935, Clinton, AR); Mercy Hospital Ozark (NPI 1275504128, Ozark, AR); Mercy Hospital Paris (NPI 1881106243, Paris, AR); Mercy Hospital Booneville (NPI 1720417066, Magazine, AR); Nes Kentucky Inc (NPI 1902348048, Nashville, AR); and 3 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2000
## Record status
- **NPPES last updated:** January 7, 2016
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Source: [NPI Profile](https://npiprofile.com/npi/1508990730) · Data from the CMS NPPES public registry.