CAITLIN MAREE DEFAZIO WILLIAMS NP-C
NPI 1437622909
Nurse Practitioner - Family in Thaxton, MS
About Caitlin Maree Defazio Williams Np-c NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CAITLIN MAREE DEFAZIO WILLIAMS NP-C (NPI 1437622909) is an individual family provider in Thaxton, Mississippi, licensed in Mississippi (903099) and active in the NPI registry since January 2019. She is enrolled in Medicare PECOS, is affiliated with Tishomingo Health Services Inc, 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
Caitlin Maree Defazio Williams Np-c 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 Caitlin Williams reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Oxford, MS 38655
- Reassigned Medicare billing, Mississippi enrollment
- Medicare enrollment name: North Mississippi Medical Center, Inc.
- 581 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 5
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 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Tishomingo Health Services Inc
Acute Care Hospitals · Iuka, MSNorth Mississippi Medical Center
Acute Care Hospitals · Tupelo, MSNorth Mississippi Medical Center-Gilmore Amory
Acute Care Hospitals · Amory, MSBaptist Memorial Hospital Booneville
Acute Care Hospitals · Booneville, MSClay County Medical Corporation
Acute Care Hospitals · West Point, MSPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 38871 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 3
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
THAXTON, MS 38871
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 Caitlin Williams's NPI number?
The NPI number for Caitlin Williams is 1437622909. It was assigned to this individual provider in the NPPES registry on January 8, 2019.
Where is Caitlin Williams located?
Caitlin Williams practices at 11145 Highway 6 W, Thaxton, MS 38871. The listed phone number is (662) 489-8500.
What is Caitlin Williams's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Caitlin Williams enrolled in Medicare?
Yes. Caitlin Williams 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 Caitlin Williams's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Caitlin Williams reassigns Medicare benefits to North Mississippi Medcial Center, Inc. (Oxford, 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 Caitlin Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Caitlin Williams accept?
Health plans from Ambetter Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter of Alabama and Ambetter of Tennessee and 3 other insurers list Caitlin Williams 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 Caitlin Williams affiliated with any hospitals?
According to CMS data, Caitlin Williams is affiliated with Tishomingo Health Services Inc, North Mississippi Medical Center, North Mississippi Medical Center-Gilmore Amory, Baptist Memorial Hospital Booneville and Clay County Medical Corporation.
When was this NPI record last updated?
The NPPES record for Caitlin Williams was last updated on April 15, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Caitlin Maree Defazio Williams, NP-C · NPI 1437622909
Family physician in Thaxton, Mississippi. Individual provider, active in the CMS NPPES registry since January 8, 2019.
## Identity
- **NPI:** 1437622909 (Entity type: Individual)
- **Enumerated:** January 8, 2019
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 903099 (Mississippi)
- **Sole proprietor:** No
## Practice location
- **Address:** 11145 HIGHWAY 6 W, Thaxton, MS 38871-9024
- **Phone:** (662) 489-8500
## 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:** North Mississippi Medcial Center, Inc. (NPI 1942025564, Oxford, 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:** April 15, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1437622909) · Data from the CMS NPPES public registry.