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Edit this profileAt a glance
- 1 Good Samaritan Way, Mount Vernon, IL 62864
About Dr. Willis
John R. Willis, MD is a healthcare provider in Mount Vernon, IL specializing in diagnostic radiology. John trained at Southern Illinois University School of Medicine, graduating in 1998. According to Medicare claims data, John cared for 2,820 Medicare patients across 2,912 services. The services billed most often include screening mammography, screening 3d breast mammography, and ct scan of abdomen and pelvis with contrast. This provider record is associated with NPI 1326095670.
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
- (618) 242-4600
- Email not available
Practice Locations
1 GOOD SAMARITAN WAY
Mount Vernon, IL 62864
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
- Breast lump or mass
- Dense Breast Tissue
Chest & Heart
General
Heart & blood vessels
Joint & bone
- Hip labral tear
- Shoulder Labrum Tear
- Stress fracture
- Tennis elbow
- Torn Achilles tendon
- Torn ACL
Liver & digestion
Lungs & breathing
Men's health
Neck & Thyroid
Nerve pain
Pelvic health
Spine
Spine & back
Vascular
Women's health
Procedures & services
Abdominal imaging
- Abdominal X-Ray
Biopsies
- Image-Guided Needle Biopsy
- Thyroid Nodule Biopsy
Bone Density
Breast Imaging
- Breast MRI
- Breast Ultrasound
- Mammogram
- Ultrasound-Guided Breast Biopsy
CT Scan
Digestive & liver
- Liver elastography
- Virtual Colonoscopy
Fluoroscopy
General imaging
- Fluoroscopy
- Soft tissue ultrasound
Heart & blood vessels
- Cardiac magnetic resonance imaging
- CT angiogram
- MR Angiogram
Joint & bone
- Hip X-Ray
- Joint injection with dye
- Knee X-Ray
- Wrist MRI
MRI
Nuclear Medicine
Pelvic imaging
Screening & Prevention
- Full Body Scan
- Low-Dose Lung CT
Spine & back
- Spine CT Scan
Ultrasound
- Abdominal Ultrasound
- Carotid Ultrasound
- Leg Vein Ultrasound
- Pelvic ultrasound
- Scrotal Ultrasound
- Thyroid ultrasound
- Ultrasound
Urinary & kidney
Women's health
X-Ray
- Chest X-Ray
- Emergency X-ray
- Spine X-Ray
Procedures Most Often Billed to Medicare
2,912 services · 2,820 patients · 25 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Screening mammography | Imaging | 77067 |
494 | As often as other peers in Diagnostic Radiology |
| Screening 3d breast mammography | Imaging | 77063 |
493 | As often as other peers in Diagnostic Radiology |
| Ct scan of abdomen and pelvis with contrast | Imaging | 74177 |
272 | More often than most peers in Diagnostic Radiology |
| Ct scan of abdomen and pelvis without contrast | Imaging | 74176 |
247 | More than most peers in Diagnostic Radiology |
| Ct scan head or brain without contrast | Imaging | 70450 |
183 | As often as other peers in Diagnostic Radiology |
| X-ray of chest, 1 view | Imaging | 71045 |
130 | Less often than most peers in Diagnostic Radiology |
| Ct scan of abdomen and pelvis before and after contrast | Imaging | 74178 |
111 | More than most peers in Diagnostic Radiology |
| X-ray of knee, 4 or more views | Imaging | 73564 |
104 | More often than most peers in Diagnostic Radiology |
| Ct scan of chest with contrast | Imaging | 71260 |
79 | As often as other peers in Diagnostic Radiology |
| Ct scan of chest without contrast | Imaging | 71250 |
70 | As often as other 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 4
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 1
Clinically related specialties at the same address — the people this provider most likely works alongside.
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.
More connections — 25 related providers in 4 groups
Other radiologists in Mount Vernon 2
Same specialty, same city.
Trained at Southern Illinois University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1998 at Southern Illinois University School of Medicine 7
Providers who graduated from the same medical school in the same year.
Also performs Screening mammography 8
Providers in IL who bill this service to Medicare most often.
Common questions
What is Dr. Willis's specialty?
Dr. Willis is a radiologist in Mount Vernon, IL. That is the designation recorded for this NPI in the federal registry, where it is listed as “Diagnostic Radiology”.
NPI registry
Where can I find Dr. Willis?
Dr. Willis is listed at 1 Good Samaritan Way, Mount Vernon, IL 62864. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Willis?
The number on file is (618) 242-4600. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Willis's NPI number?
Dr. Willis's National Provider Identifier is 1326095670. 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
What is Dr. Willis's medical education?
Dr. Willis attended Southern Illinois University School of Medicine, graduating in 1998. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Willis been practicing?
Dr. Willis has 28 years experience. Calculated from a graduation year of 1998, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Willis known for?
According to Medicare billing data, Dr. Willis performs imaging including screening mammography and screening 3d breast mammography; provides treatments such as ultrasound study of one arm or leg veins with compression and maneuvers and ultrasound of both sides of head and neck blood flow. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Willis confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Willis. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.