CATHERINE MOHLER WILLSEY
NPI 1952275257
Nurse Practitioner - Acute Care in Ellicott City, MD
About Catherine Mohler Willsey NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CATHERINE MOHLER WILLSEY (NPI 1952275257) is an individual acute care provider in Ellicott City, Maryland, licensed in Maryland (R245454) and active in the NPI registry since October 2025. She is enrolled in Medicare PECOS and is a graduate of Other (2025).
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
Catherine Mohler Willsey 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 Catherine Willsey reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Ellicott City, MD 21042
- Reassigned Medicare billing, Maryland enrollment
- 3 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 21042 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 3
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
ELLICOTT CITY, MD 21042
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 Catherine Willsey's NPI number?
The NPI number for Catherine Willsey is 1952275257. It was assigned to this individual provider in the NPPES registry on October 1, 2025.
Where is Catherine Willsey located?
Catherine Willsey practices at 9501 Old Annapolis Rd Ste 205, Ellicott City, MD 21042. The listed phone number is (410) 648-2555.
What is Catherine Willsey's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Acute Care, with taxonomy code 363LA2100X.
Is Catherine Willsey enrolled in Medicare?
Yes. Catherine Willsey 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 Catherine Willsey's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Catherine Willsey reassigns Medicare benefits to Integrative Health Practices, LLC (Ellicott City, MD). 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 Catherine Willsey'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 Catherine Willsey was last updated on October 1, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.
# Catherine Mohler Willsey · NPI 1952275257
Acute Care physician in Ellicott City, Maryland. Individual provider, active in the CMS NPPES registry since October 1, 2025.
## Identity
- **NPI:** 1952275257 (Entity type: Individual)
- **Enumerated:** October 1, 2025
- **Primary specialty:** Nurse Practitioner - Acute Care · taxonomy 363LA2100X
- **State license:** R245454 (Maryland)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 9501 OLD ANNAPOLIS RD STE 205, Ellicott City, MD 21042-6336
- **Phone:** (410) 648-2555
## 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:** Integrative Health Practices, LLC (NPI 1033634530, Ellicott City, MD), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2025
## Record status
- **NPPES last updated:** October 1, 2025
---
Source: [NPI Profile](https://npiprofile.com/npi/1952275257) · Data from the CMS NPPES public registry.