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Edit this profileAt a glance
- 1325 S. Cliff Ave, Sioux Falls, SD 57105
About Dr. Gregory
Based in Sioux Falls, SD, Christopher Gregory, MD is listed in the NPI registry under diagnostic radiology. Christopher graduated from Johns Hopkins University School of Medicine in 1985. According to Medicare claims data, Christopher cared for 2,215 Medicare patients across 2,342 services. The services billed most often include x-ray of chest, 1 view, nuclear medicine study from skull base to mid-thigh with ct scan, and x-ray of chest, 2 views. NPI 1821050212 identifies this record in the national registry.
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
- (605) 322-7510
- Email not available
Practice Locations
1325 S. CLIFF AVE
Sioux Falls, SD 57105
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
2,342 services · 2,215 patients · 25 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| X-ray of chest, 1 view | Imaging | 71045 |
518 | More often than most peers in Diagnostic Radiology |
| Nuclear medicine study from skull base to mid-thigh with ct scan | Imaging | 78815 |
312 | More often than most peers in Diagnostic Radiology |
| X-ray of chest, 2 views | Imaging | 71046 |
149 | More often than most peers in Diagnostic Radiology |
| Ct scan head or brain without contrast | Imaging | 70450 |
135 | As often as other peers in Diagnostic Radiology |
| Ct scan of abdomen and pelvis with contrast | Imaging | 74177 |
134 | As often as other peers in Diagnostic Radiology |
| Nuclear medicine studies of heart muscle at rest and with stress and spect | Imaging | 78452 |
129 | More often than most peers in Diagnostic Radiology |
| X-ray of chest, 2 views | Imaging | 71046 |
100 | More often than most peers in Diagnostic Radiology |
| Ct scan of chest with contrast | Imaging | 71260 |
81 | More often than most peers in Diagnostic Radiology |
| X-ray of abdomen, 1 view | Imaging | 74018 |
73 | As often as other peers in Diagnostic Radiology |
| Ct scan of blood vessels of chest with contrast | Imaging | 71275 |
62 | 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 1
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 Sioux Falls 7
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Johns Hopkins University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1985 at Johns Hopkins University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs X-ray of chest, 1 view 8
Providers in SD who bill this service to Medicare most often.
Common questions
What does Dr. Gregory specialize in?
Dr. Gregory is a radiologist in Sioux Falls, SD. That is the designation recorded for this NPI in the federal registry, where it is listed as “Diagnostic Radiology”.
NPI registry
Where is Dr. Gregory located?
Dr. Gregory is listed at 1325 S. Cliff Ave, Sioux Falls, SD 57105. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Gregory's phone number?
The number on file is (605) 322-7510. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Gregory's NPI number?
Dr. Gregory's National Provider Identifier is 1821050212. 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. Gregory go to medical school?
Dr. Gregory attended Johns Hopkins University School of Medicine, graduating in 1985. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Gregory been practicing?
Dr. Gregory has 41 years experience. Calculated from a graduation year of 1985, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Gregory do most often?
According to Medicare billing data, Dr. Gregory performs imaging including x-ray of chest, 1 view and nuclear medicine study from skull base to mid-thigh with ct scan. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Gregory confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Gregory. If this is you, claiming it is free.
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