MARY KATHERINE STEVENSON APNP
NPI 1255685913
Nurse Practitioner - Family in Columbia, MD
About Mary Katherine Stevenson Apnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARY KATHERINE STEVENSON APNP (NPI 1255685913) is an individual family provider in Columbia, Maryland, licensed in Wisconsin (5125-33) and active in the NPI registry since November 2012. She is enrolled in Medicare PECOS and maintains a secondary practice location in Schofield.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Mary Katherine Stevenson Apnp is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Mary Stevenson reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Plover, WI 54467
- Reassigned Medicare billing, Wisconsin enrollment
- 2,476 clinicians in this Medicare group
Marshfield, WI 54449
- Reassigned Medicare billing, Wisconsin enrollment
- 2,540 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 2
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21044 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.
Referred Medical Equipment & Supplies CMS DME claims 15
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
COLUMBIA, MD 21044
COLUMBIA, MD 21044
COLUMBIA, MD 21044
COLUMBIA, MD 21044
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 Mary Stevenson's NPI number?
The NPI number for Mary Stevenson is 1255685913. It was assigned to this individual provider in the NPPES registry on November 2, 2012.
Where is Mary Stevenson located?
Mary Stevenson practices at 10175 Little Patuxent Pkwy, Columbia, MD 21044. The listed phone number is (877) 391-2760.
What is Mary Stevenson's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Mary Stevenson enrolled in Medicare?
Yes. Mary Stevenson is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Mary Stevenson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Stevenson reassigns Medicare benefits to 2 organizations: Mchs Hospitals, Inc. (Plover, WI) and Marshfield Clinic Inc (Marshfield, WI). 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 Mary Stevenson'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 Mary Stevenson was last updated on April 23, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Mary Katherine Stevenson, APNP · NPI 1255685913
Family physician in Columbia, Maryland. Individual provider, active in the CMS NPPES registry since November 2, 2012.
## Identity
- **NPI:** 1255685913 (Entity type: Individual)
- **Enumerated:** November 2, 2012
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 5125-33 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 10175 LITTLE PATUXENT PKWY, Columbia, MD 21044-2655
- **Phone:** (877) 391-2760
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Mchs Hospitals, Inc. (NPI 1386249894, Plover, WI); Marshfield Clinic Inc (NPI 1952347981, Marshfield, WI) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** April 23, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1255685913) · Data from the CMS NPPES public registry.