Physician Profile
Sean K. Shannahan, MD
Unclaimed ProfileAbout Dr. Shannahan
Sean K. Shannahan, MD practices diagnostic radiology in Madison, WI. Sean is a 1997 graduate of Chicago College of Medicine and Surgery. Medicare claims data shows Sean provided 10,131 services to 3,155 patients. The services billed most often include low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml, x-ray of chest, 1 view, and x-ray of chest, 2 views. The provider's National Provider Identifier (NPI) is 1831179571.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (608) 251-6100
- Email not available
Practice Locations
700 S PARK ST
Madison, WI 53715
Conditions Evaluated or Diagnosed
Within Diagnostic Radiology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Abdomen & Pelvis
- Abdominal Pain
- Appendicitis
- Diverticulitis
- Enlarged prostate
- Gallstones
- Kidney stones
- Liver Lesions
- Ovarian cysts
Bone & Joint
- Ankle Sprain or Fracture
- Bone fractures
- Heel pain
- Hip osteoarthritis
- Osteoporosis
- Rotator cuff tear
- Torn meniscus
Brain & Head
- Brain aneurysm
- Brain tumor
- Concussion in Children
- Migraines
- Sinus infection
- Transient ischemic attack
Brain & nerves
Breast
Chest & Heart
General
Heart & blood vessels
Joint & bone
Liver & digestion
Lungs & breathing
Men's health
Neck & Thyroid
Nerve pain
Pelvic health
Spine
Spine & back
Vascular
Women's health
Procedures & services
Abdominal imaging
Biopsies
Bone Density
Breast Imaging
CT Scan
Digestive & liver
Fluoroscopy
General imaging
Heart & blood vessels
Joint & bone
MRI
Nuclear Medicine
Pelvic imaging
Screening & Prevention
Spine & back
Ultrasound
- Abdominal Ultrasound
- Carotid Ultrasound
- Leg Vein Ultrasound
- Pelvic ultrasound
- Scrotal Ultrasound
- Thyroid ultrasound
- Ultrasound
Urinary & kidney
Women's health
X-Ray
Procedures Most Often Billed to Medicare
10,131 services · 3,155 patients · 25 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| X-ray of chest, 1 view | Imaging | 71045 |
496 | More often than most peers in Diagnostic Radiology |
| X-ray of chest, 2 views | Imaging | 71046 |
318 | More than most peers in Diagnostic Radiology |
| Screening mammography | Imaging | 77067 |
256 | As often as other peers in Diagnostic Radiology |
| Screening 3d breast mammography | Imaging | 77063 |
255 | As often as other peers in Diagnostic Radiology |
| Ct scan head or brain without contrast | Imaging | 70450 |
200 | As often as other peers in Diagnostic Radiology |
| Ct scan of abdomen and pelvis with contrast | Imaging | 74177 |
168 | More often than most peers in Diagnostic Radiology |
| X-ray of chest, 2 views | Imaging | 71046 |
156 | More than most peers in Diagnostic Radiology |
| Dxa bone density measurement of hip, pelvis, spine | Imaging | 77080 |
121 | As often as other peers in Diagnostic Radiology |
| X-ray of knee, 3 views | Imaging | 73562 |
104 | More often than most peers in Diagnostic Radiology |
| Ct scan of upper spine without contrast | Imaging | 72125 |
102 | More often than most peers in Diagnostic Radiology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other radiologists at this location 3
Same specialty, same street address — most likely the same department or group.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other radiologists in Madison 8
Same specialty, same city.
More connections — 23 related providers in 3 groups
Trained at Chicago College of Medicine and Surgery 8
Other providers in the same specialty who trained at the same institution.
Class of 1997 at Chicago College of Medicine and Surgery 7
Providers who graduated from the same medical school in the same year.
Also performs X-ray of chest, 1 view 8
Providers in WI who bill this service to Medicare most often.
Common questions
What does Dr. Shannahan specialize in?
Dr. Shannahan is a radiologist in Madison, WI. That is the designation recorded for this NPI in the federal registry, where it is listed as “Diagnostic Radiology”.
NPI registry
Where is Dr. Shannahan located?
Dr. Shannahan is listed at 700 S Park St, Madison, WI 53715. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Shannahan's phone number?
The number on file is (608) 251-6100. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Dr. Shannahan?
Dr. Shannahan's National Provider Identifier is 1831179571. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Shannahan go to medical school?
Dr. Shannahan attended Chicago College of Medicine and Surgery, graduating in 1997. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Shannahan have?
Dr. Shannahan has 29 years experience. Calculated from a graduation year of 1997, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Shannahan do most often?
According to Medicare billing data, Dr. Shannahan performs imaging including x-ray of chest, 1 view and x-ray of chest, 2 views. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Shannahan's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Shannahan. If this is you, claiming it is free.
Guide.md
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