Karen C. Mathes, CRNA
NPI 1114224136ActiveIndividual· Nurse Anesthetist, Certified Registered· Fredericksburg, VA
Nurse Anesthetist, Certified Registered (CRNA) with Surgical Anesthesia Associates PLLC and 1 other group, practicing in Fredericksburg, Virginia. Medicare paid $21,030 for services to 295 patients in 2024. Braintree Laboratories, Inc. reported $22.29 in payments in 2025, mostly food and beverage. Lists Spotsylvania Regional Medical Center as a hospital affiliation.
Overview
| NPI | 1114224136 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | CRNA |
| Sole proprietor | No |
| NPI issued | Feb 28, 2011 |
| Last updated in NPPES | Oct 10, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Anesthetist, Certified Registered Primary | 367500000X | 0024169217 | VA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Certified Registered Nurse Anesthetist (CRNA) (DC); Practitioner - Certified Registered Nurse Anesthetist (CRNA) (VA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 295 |
|---|---|
| Services billed | 307 across 35 procedure codes |
| Paid by Medicare | $21,030 |
Education and affiliations
| Graduation year | 2010 |
|---|---|
| Medicare specialty | Certified Registered Nurse Anesthetist (Crna) |
Medical groups
- Surgical Anesthesia Associates PLLCFredericksburg, VA · 83 clinicians
- Old Dominion Anesthesia LLCReston, VA · 54 clinicians
Hospital affiliation
- Spotsylvania Regional Medical CenterFredericksburg, VA
Industry payments (Open Payments)
- 2025$22.29 · 1 payment from 1 company
- 2024$41.35 · 2 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Braintree Laboratories, Inc. | $22.29 | 1 |
What the 2025 payments were for
- Food and Beverage$22.29 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 90 nurse anesthetists in Fredericksburg · All nurse anesthetists in Virginia