DR. BRIAN THOMAS CALLAHAN (M.D.) – Diagnostic Radiology Physician, NPI 1013059625
Diagnostic Radiology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
3,303 DIAGNOSTIC RADIOLOGY in TX
Provider Addresses for DR. BRIAN THOMAS CALLAHAN (M.D.)
5, Myrtlewood, Oakwell Farms, San Antonio, Bexar County, Texas, 78218, United States
SAN ANTONIO, TX 782186000
Phone: (617) 595-8336
Type: Mailing
2200 BERGQUIST DR
LACKLAND A F B, TX 782369907
Phone: (210) 292-2205
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 $18.
Total Amount is formed as General ($18) + Research ($0) + Ownership ($0) = $18.
Last reported payment date: 2024-01-24 • Largest payer in this snapshot: Bard Peripheral Vascular, Inc. ($18).
Total Amount
$18
General + Research + Ownership
Payments
1
Total payment records
General Amount
$18
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-01-24
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Bard Peripheral Vascular, Inc. | $18 |
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: 2018-11-07
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
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 |
|---|---|---|---|---|
| I20181107001724 | 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 | 582 | 490 | $0 |
| 71046 | X-ray of chest, 2 views | 356 | 345 | $0 |
| 49083 | Drainage of fluid from abdominal cavity using imaging guidance | 147 | 27 | $0 |
| 78815 | Nuclear medicine study from skull base to mid-thigh with ct scan | 140 | 135 | $0 |
| 70450 | Ct scan head or brain without contrast | 130 | 123 | $0 |
Insurance plans in this area (ZIP 78218)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| DIAGNOSTIC RADIOLOGY | TX | 71010 | X-ray of chest, 1 view, front | 1536 | 1255 |
| DIAGNOSTIC RADIOLOGY | TX | 71250 | CT scan chest | 341 | 328 |
| DIAGNOSTIC RADIOLOGY | TX | 73630 | X-ray of foot, minimum of 3 views | 142 | 125 |
| DIAGNOSTIC RADIOLOGY | TX | 74177 | CT scan of abdomen and pelvis with contrast | 397 | 382 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| - | MD | |
| - | MD | |
| General Surgery | MD | |
| - | MD | |
| U R O L O G Y | OH | |
| N E U R O L O G Y | MD | |
| - | MD | |
| Qualified Audiologist | MD | |
| - | MD | |
| Nurse Practitioner | MD |
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