DR. CLARK B DIFFENDAFFER (MD) – Diagnostic Radiology Physician, NPI 1174612337
Diagnostic Radiology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
3,168 DIAGNOSTIC RADIOLOGY in FL
Provider Addresses for DR. CLARK B DIFFENDAFFER (MD)
601 E Rollins St
Orlando, FL 328031248
Phone: (407) 200-2355
Type: Location
7601 PIONEERS BLVD
LINCOLN, NE 685064675
Phone: (402) 484-6677
Type: Location
Florida Hospital Orlando Emergency Room, 601, Rollins Street, Orlando, Orange County, Florida, 32803, United States
ORLANDO, FL 328031248
Phone: (407) 200-2355
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
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: 2019-06-18
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 |
|---|---|---|---|---|
| I20190618002931 | I | Diagnostic Radiology | FL | 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 |
|---|---|---|---|---|
| 72148 | Mri scan of lower spinal canal without contrast | 374 | 373 | $0 |
| 70450 | Ct scan head or brain without contrast | 359 | 350 | $0 |
| 70553 | Mri scan of brain before and after contrast | 295 | 287 | $0 |
| 71046 | X-ray of chest, 2 views | 251 | 240 | $0 |
| 77080 | Dxa bone density measurement of hip, pelvis, spine | 226 | 226 | $0 |
Insurance plans in this area (ZIP 32803)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| DIAGNOSTIC RADIOLOGY | NE | 71250 | CT scan chest | 105 | 101 |
| DIAGNOSTIC RADIOLOGY | NE | 73110 | X-ray of wrist, minimum of 3 views | 18 | 15 |
| DIAGNOSTIC RADIOLOGY | NE | 76830 | Ultrasound pelvis through vagina | 11 | 11 |
| DIAGNOSTIC RADIOLOGY | NE | 78815 | Nuclear medicine study with CT imaging skull base to mid-thigh | 106 | 90 |
| DIAGNOSTIC RADIOLOGY | NE | 93922 | Ultrasound study of arteries of both arms and legs | 27 | 26 |
| DIAGNOSTIC RADIOLOGY | NE | 93926 | Ultrasound study of arteries and arterial grafts of one leg or limited | 19 | 18 |
| DIAGNOSTIC RADIOLOGY | NE | 93971 | Ultrasound scan of veins of one arm or leg or limited including assessment of compression and functional maneuvers | 121 | 118 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Diagnostic Radiology | NE | |
| - | NE | |
| Nurse Practitioner | NE | |
| - | NE | |
| Diagnostic Radiology | MN | |
| Interventional Radiology, Diagnostic Radiology | NE | |
| Diagnostic Radiology | NE | |
| Diagnostic Radiology | NE | |
| Diagnostic Radiology | NE | |
| Diagnostic Radiology | NE |
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