KARR, STEWART MD
Interventional Radiology · NPI 1477567022 · SILVER SPRING, MD
KARR, STEWART is a Interventional Radiology in SILVER SPRING, MD, a member of 2 medical groups, who billed 38 distinct codes to Medicare Part B in 2024.
Groups: BLACKWELL PHYSICIANS, LLC (ROCKVILLE, MD) · DIAGNOSTIC MEDICAL IMAGING PA (COLUMBIA, MD) — member of 2 groups; the volumes below are this clinician's personal volume and are not attributed to any single group
Year: 2024 · 2023 · 2022 🔒 · 2021 🔒 · 2020 🔒
Provider overview · all codes · CY2024
All figures are disclosed (CMS suppresses fewer-than-11-beneficiary rows) Medicare Part B fee-for-service — a subset, never complete totals; volumes are personal to this NPI, not attributed to any group. Standing is a billed-volume position among specialty peers with disclosed billing (national percentile; a provider's true standing can only be higher, never lower), not a statement about care. See Methods & Sources.
Procedures billed to Medicare Part B (2024)
Medicare Part B FFS · CY2024 · as published by CMS| Code | Description | Services | Beneficiary-episodes | Avg charge | Avg Medicare payment |
|---|---|---|---|---|---|
| 71045 | X-ray of chest, 1 view | premium | premium | premium | premium |
| 71046 | X-ray of chest, 2 views | premium | premium | premium | premium |
| 70450 | Ct scan head or brain without contrast | premium | premium | premium | premium |
| 74177 | Ct scan of abdomen and pelvis with contrast | premium | premium | premium | premium |
| 74230 | Imaging for evaluation of swallowing function | premium | premium | premium | premium |
| 71260 | Ct scan of chest with contrast | premium | premium | premium | premium |
| 74176 | Ct scan of abdomen and pelvis without contrast | premium | premium | premium | premium |
| 99152 | Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes | premium | premium | premium | premium |
| 32555 | Aspiration of fluid from chest cavity using imaging guidance | premium | premium | premium | premium |
| 71250 | Ct scan of chest without contrast | premium | premium | premium | premium |
| 73560 | X-ray of knee, 1-2 views | premium | premium | premium | premium |
| 76705 | Limited ultrasound scan of abdomen | premium | premium | premium | premium |
| 74018 | X-ray of abdomen, 1 view | premium | premium | premium | premium |
| 73030 | X-ray of shoulder, minimum of 2 views | premium | premium | premium | premium |
| 76770 | Complete ultrasound scan behind abdominal cavity | premium | premium | premium | premium |
| 77001 | Fluoroscopic guidance for insertion or removal of central vein access device | premium | premium | premium | premium |
| 49083 | Drainage of fluid from abdominal cavity using imaging guidance | premium | premium | premium | premium |
| 73502 | X-ray of hip, 2-3 views | premium | premium | premium | premium |
| 73562 | X-ray of knee, 3 views | premium | premium | premium | premium |
| 72170 | X-ray of pelvis, 1-2 views | premium | premium | premium | premium |
| 73552 | X-ray of thigh bone, minimum 2 views | premium | premium | premium | premium |
| 93971 | Ultrasound study of one arm or leg veins with compression and maneuvers | premium | premium | premium | premium |
| 76937 | Ultrasonic guidance for blood vessel access | premium | premium | premium | premium |
| 74178 | Ct scan of abdomen and pelvis before and after contrast | premium | premium | premium | premium |
| 70498 | Ct scan of blood vessels of neck with contrast | premium | premium | premium | premium |
| 72125 | Ct scan of upper spine without contrast | premium | premium | premium | premium |
| 76942 | Ultrasonic guidance for needle placement | premium | premium | premium | premium |
| 70496 | Ct scan of blood vessels of head with contrast | premium | premium | premium | premium |
| 36558 | Insertion of tunneled central venous tube for infusion (5 years or older) | premium | premium | premium | premium |
| 77012 | Review by radiologist of ct guidance for needle placement | premium | premium | premium | premium |
| 93880 | Ultrasound of both sides of head and neck blood flow | premium | premium | premium | premium |
| 93970 | Ultrasound study of arm or leg veins with compression and maneuvers | premium | premium | premium | premium |
| 36561 | Insertion of central venous tube with port (5 years or older) | premium | premium | premium | premium |
| 73590 | X-ray of lower leg, 2 views | premium | premium | premium | premium |
| 71270 | Ct scan of chest before and after contrast | premium | premium | premium | premium |
| 71275 | Ct scan of blood vessels of chest with contrast | premium | premium | premium | premium |
| 72100 | X-ray of lower and sacral spine, 2-3 views | premium | premium | premium | premium |
| 74220 | Single contrast x-ray of esophagus | premium | premium | premium | premium |
These are this provider's own Medicare Part B fee-for-service volumes (CMS public data). CMS suppresses rows with fewer than 11 beneficiaries, so low-volume codes may be missing entirely — absence is not zero. Beneficiary-episodes count CMS's per-setting beneficiary figures, not unique patients. Average charge and average Medicare payment are weighted by service volume across office and facility settings. Volumes on this page are personal to the NPI and are not attributed to any physician group. See Methods & Sources.