MRS. MICHELLE DIANE WILLIS APRN-CNP
NPI 1639060171
Nurse Practitioner - Family in Chickasha, OK
About Mrs. Michelle Diane Willis Aprn-cnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MRS. MICHELLE DIANE WILLIS APRN-CNP (NPI 1639060171) is an individual family provider in Chickasha, Oklahoma, licensed in Oklahoma (224385) and active in the NPI registry since July 2025. She is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Other (2025).
NPPES Registry Identity
Specialties & Licenses 2
Other Names 1
Secondary Practice Locations 2
Other Identifiers 1
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
Mrs. Michelle Diane Willis Aprn-cnp 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 Michelle Willis reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Lawton, OK 73505
- Reassigned Medicare billing, Oklahoma enrollment
- 249 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 73018 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 7
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CHICKASHA, OK 73018
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 Michelle Willis's NPI number?
The NPI number for Michelle Willis is 1639060171. It was assigned to this individual provider in the NPPES registry on July 14, 2025. The provider is also known as Michelle Diane Wilson.
Where is Michelle Willis located?
Michelle Willis practices at 411 W Grand Ave, Chickasha, OK 73018. The listed phone number is (405) 224-0053.
What is Michelle Willis's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Michelle Willis enrolled in Medicare?
Yes. Michelle Willis 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 Michelle Willis's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michelle Willis reassigns Medicare benefits to Williams Medical Group Practice, LLC (Lawton, OK). 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 Michelle Willis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Michelle Willis accept?
Health plans from Blue Cross and Blue Shield of Oklahoma list Michelle Willis 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 Michelle Willis was last updated on September 14, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 50 days 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.
# Mrs. Michelle Diane Willis, APRN-CNP · NPI 1639060171
Family physician in Chickasha, Oklahoma. Individual provider, active in the CMS NPPES registry since July 14, 2025.
## Identity
- **NPI:** 1639060171 (Entity type: Individual)
- **Enumerated:** July 14, 2025
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 224385 (Oklahoma)
- **Sole proprietor:** No
## Practice location
- **Address:** 411 W GRAND AVE, Chickasha, OK 73018-5862
- **Phone:** (405) 224-0053
## 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:** Williams Medical Group Practice, LLC (NPI 1346608809, Lawton, OK), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2025
## Record status
- **NPPES last updated:** September 14, 2026
- **Other identifiers:** Medicaid 201374690A (OK)
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Source: [NPI Profile](https://npiprofile.com/npi/1639060171) · Data from the CMS NPPES public registry.