STEWART B KARR (MD) – Diagnostic Radiology Physician, NPI 1477567022
Diagnostic Radiology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
145 INTERVENTIONAL RADIOLOGY in MD
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Provider Addresses for STEWART B KARR (MD)
4718 CARR DRIVE
PER SE TECHNOLOGIES ELLIE CONLEY
FREDERICKSBURG, VA 22408
Phone: (540) 891-5764
Fax: (540) 891-5769
Type: Mailing
Community Radiology, 2121, Medical Park Drive, Carroll Knolls, Silver Spring, Montgomery County, Maryland, 20902, United States
SUITE 3
SILVER SPRING, MD 20902
Phone: (501) 681-3003
Fax: (301) 681-5868
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 1 Open Payments records for all available years, with a total value of $71.
Total Amount is formed as General ($71) + Research ($0) + Ownership ($0) = $71.
Last reported payment date: 2024-06-10 • Largest payer in this snapshot: Cook Medical LLC ($71).
Total Amount
$71
General + Research + Ownership
Payments
1
Total payment records
General Amount
$71
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-06-10
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Cook Medical LLC | $71 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2015-10-30
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20101116000583 | I | Interventional Radiology | DC | TBD |
| I20151030000597 | I | Diagnostic Radiology | MD | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 71045 | X-ray of chest, 1 view | 602 | 503 | $0 |
| 70450 | Ct scan head or brain without contrast | 261 | 257 | $0 |
| 71046 | X-ray of chest, 2 views | 213 | 208 | $0 |
| 74177 | Ct scan of abdomen and pelvis with contrast | 111 | 109 | $0 |
| 74176 | Ct scan of abdomen and pelvis without contrast | 95 | 94 | $0 |
Insurance plans in this area (ZIP 22408)
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Provider's Procedures
Group practice members
| Name | Specialty | State |
|---|---|---|
| Diagnostic Radiology | MD | |
| Diagnostic Radiology | MD | |
| Diagnostic Radiology | VA | |
| Diagnostic Radiology | NJ | |
| Diagnostic Radiology | CA | |
| - | NJ | |
| Interventional Radiology | MA | |
| - | NY | |
| Diagnostic Radiology | HI |
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