KAREN C MATHES CRNA
NPI 1114224136
Nurse Anesthetist, Certified Registered in Fredericksburg, VA
About Karen C Mathes Crna NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KAREN C MATHES CRNA (NPI 1114224136) is an individual nurse anesthetist, certified registered in Fredericksburg, Virginia, licensed in Virginia (0024169217) and active in the NPI registry since February 2011. She is affiliated with Spotsylvania Regional Medical Center and is a graduate of Other (2010).
NPPES Registry Identity
Specialties & Licenses
Other Names 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
Karen C Mathes Crna 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
7Medicare enrollment records show Karen Mathes reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Fredericksburg, VA 22401
- Reassigned Medicare billing, Virginia enrollment
- 19 clinicians in this Medicare group
Fredericksburg, VA 22401
- Reassigned Medicare billing, Virginia enrollment
- 135 clinicians in this Medicare group
Woodbridge, VA 22191
- Reassigned Medicare billing, Virginia enrollment
- 170 clinicians in this Medicare group
Alexandria, VA 22306
- Reassigned Medicare billing, District of Columbia and Virginia enrollments
- 634 clinicians in this Medicare group
Falls Church, VA 22042
- Reassigned Medicare billing, Virginia enrollment
- 1,217 clinicians in this Medicare group
Washington, DC 20016
- Reassigned Medicare billing, Virginia enrollment
- 119 clinicians in this Medicare group
Charlottesville, VA 22902
- Reassigned Medicare billing, District of Columbia and Virginia enrollments
- 94 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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Spotsylvania Regional Medical Center
Acute Care Hospitals · Fredericksburg, VAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 22401 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
FREDERICKSBURG, VA 22401
FREDERICKSBURG, VA 22401
FREDERICKSBURG, VA 22401
FREDERICKSBURG, VA 22401
FREDERICKSBURG, VA 22401
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 Karen Mathes's NPI number?
The NPI number for Karen Mathes is 1114224136. It was assigned to this individual provider in the NPPES registry on February 28, 2011. The provider is also known as Karen C Bishop Crna.
Where is Karen Mathes located?
Karen Mathes practices at 1001 Sam Perry Blvd, Fredericksburg, VA 22401. The listed phone number is (540) 741-2632.
What is Karen Mathes's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Karen Mathes enrolled in Medicare?
Yes. Karen Mathes 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 Karen Mathes's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Karen Mathes reassigns Medicare benefits to 7 organizations: Central Virginia Anesthesia Associates, LLC (Fredericksburg, VA), Professional Anesthesia Group, LLC (Fredericksburg, VA), Premier Anesthesia Of Virginia LLC (Woodbridge, VA), Northstar Anesthesia Of Virginia, LLC (Alexandria, VA), American Anesthesiology Of Virginia PC (Falls Church, VA) and 2 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 Karen Mathes's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Karen Mathes accept?
Health plans from Oscar Health and Oscar Insurance Company list Karen Mathes 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 Karen Mathes affiliated with any hospitals?
According to CMS data, Karen Mathes is affiliated with Spotsylvania Regional Medical Center.
When was this NPI record last updated?
The NPPES record for Karen Mathes was last updated on October 10, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.
# Karen C Mathes, CRNA · NPI 1114224136
Nurse Anesthetist, Certified Registered physician in Fredericksburg, Virginia. Individual provider, active in the CMS NPPES registry since February 28, 2011.
## Identity
- **NPI:** 1114224136 (Entity type: Individual)
- **Enumerated:** February 28, 2011
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** 0024169217 (Virginia)
- **Sole proprietor:** No
## Practice location
- **Address:** 1001 SAM PERRY BLVD, Fredericksburg, VA 22401-4453
- **Phone:** (540) 741-2632
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Bills Medicare through:** 7 organizations under Medicare reassignment (form CMS-855R): Central Virginia Anesthesia Associates, LLC (NPI 1740820976, Fredericksburg, VA); Professional Anesthesia Group, LLC (NPI 1619149648, Fredericksburg, VA); Premier Anesthesia Of Virginia LLC (NPI 1255986147, Woodbridge, VA); Northstar Anesthesia Of Virginia, LLC (NPI 1194488791, Alexandria, VA); American Anesthesiology Of Virginia PC (NPI 1417994872, Falls Church, VA); and 2 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2010
## Record status
- **NPPES last updated:** October 10, 2017
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Source: [NPI Profile](https://npiprofile.com/npi/1114224136) · Data from the CMS NPPES public registry.