Dr. Christopher Gregory, MD
- Medicare services, 2024
- 2,972
- Medicare patients, 2024
- 2,666
- Hospital affiliations
- 6
- Industry payments
- $433
- Medical groups
- 8
- Practice address
- 1325 S Cliff Ave Post Office Box 5045, Sioux Falls, SD 57117
- Practice phone
- Call (605) 322-8000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Gregory's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Christopher Gregory is a diagnostic radiologist in Sioux Falls, South Dakota
Dr. Gregory practices at Avera McKennan Hospital & University Health Center in Sioux Falls, South Dakota, part of Avera Health.
Dr. Gregory's NPI, 1821050212, was assigned on April 3, 2006. Dr. Gregory graduated from Johns Hopkins University School of Medicine in 1985. Dr. Gregory holds South Dakota license 5278.
- NPI
- 1821050212NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3971498544
- NPI enumeration date
- April 3, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (605) 322-8000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 67
- Medical school graduation
- 1985
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Christopher Gregory practices at Avera McKennan Hospital & University Health Center in Sioux Falls, South Dakota
Dr. Gregory's primary practice is Avera McKennan Hospital & University Health Center, at 1325 S Cliff Ave Post Office Box 5045, Sioux Falls, SD 57117 in Minnehaha County. The practice phone is (605) 322-8000.
- Avera McKennan Hospital & University Health Center1325 S Cliff Ave Post Office Box 5045, Sioux Falls, SD 57117 · Minnehaha CountyPhone(605) 322-8000
Source: Dmand AI Affiliation Data
Dr. Christopher Gregory is affiliated with 6 sites of care and 8 medical groups
Dr. Gregory's primary practice is Avera McKennan Hospital & University Health Center in Sioux Falls, South Dakota, part of Avera Health. Dr. Gregory is also affiliated with Avera Heart Hospital. The medical group on file is Avera McKennan Hospital & University Health Center. Dmand AI also links Dr. Gregory to 4 more hospitals and 7 medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Christopher Gregory's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Gregory practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Avera McKennan Hospital & University Health Center | Available with a free account |
| +5 more sites and 7 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Christopher Gregory is one of 115 diagnostic radiologists in South Dakota
Diagnostic radiology is Dr. Gregory's primary specialty in the NPI Registry, under taxonomy code 2085R0202X. Dr. Gregory is licensed in South Dakota.
Specialties and state licenses
- Diagnostic radiology, South DakotaPrimary
Diagnostic radiologists near Dr. Gregory
Counts of diagnostic radiologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Christopher Gregory billed Medicare for 2,972 services in 2024
CMS data shows 2,972 Medicare services from Dr. Gregory across 46 procedure codes in 2024, for 2,666 Medicare patients. Medicare paid $85,706 for them.
Dr. Gregory's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Imaging
- 2023: 3,3162024: 2,93412%
- Tests and treatments
- 2023: 482024: 3821%
Where Dr. Gregory's Medicare services took place, 2024
- In an office42914%
- In a facility2,54386%
Dr. Gregory compared with the South Dakota median for diagnostic radiologists, 2024
- Dr. Gregory
- South Dakota median
- Medicare services
- 2,972vs 2,968Close to median
- Medicare patients
- 2,666vs 1,98734% above
Medians across 120 diagnostic radiologists in South Dakota with Dmand AI profiles that report each measure.
Dr. Gregory's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Gregory?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Gregory and other diagnostic radiologists in South Dakota.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Christopher Gregory treated 2,666 Medicare patients in 2024, average age 74
CMS counts 2,666 Medicare patients who saw Dr. Gregory in 2024. The largest group is 65 to 74, with 1,205 patients. 75% of them have high blood pressure, and 73% have high cholesterol. 12% are also on Medicaid. Their average risk score is 1.66, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Gregory's median patient age at 54, with 55% women.
Dr. Gregory's Medicare patients by age, 2024
Dr. Gregory's Medicare patients by sex, 2024
- Women1,47055%
- Men1,19645%
Chronic conditions among Dr. Gregory's Medicare patients, 2024
- High blood pressure75%
- High cholesterol73%
- Arthritis48%
- Ischemic heart disease34%
- Diabetes32%
- Chronic kidney disease31%
- Mood disorders30%
- Anxiety28%
Share of Medicare patients with each condition. A patient can have several.
Dr. Gregory's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 54
Patient panel by sex, all payers
- Women55%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Christopher Gregory takes part in Medicare
Dr. Gregory accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Christopher Gregory received $433 in industry payments from 2016 to 2024
CMS Open Payments shows 6 general payments to Dr. Gregory from 4 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 100% of the total. GE Healthcare paid the most, $189.
General payments to Dr. Gregory by program year, 2016 to 2024
Companies that paid Dr. Gregory the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Christopher Gregory graduated from Johns Hopkins University School of Medicine
Dr. Gregory graduated from Johns Hopkins University School of Medicine in 1985.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Christopher Gregory's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Christopher Gregory
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Christopher Gregory's NPI number?
Dr. Christopher Gregory's NPI number is 1821050212. It was assigned on April 3, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Christopher Gregory?
Dr. Christopher Gregory is a diagnostic radiologist in Sioux Falls, South Dakota. The primary specialty in the NPI Registry is Diagnostic Radiology Physician (taxonomy code 2085R0202X).
Where does Dr. Christopher Gregory practice?
Dr. Gregory practices at 1325 S Cliff Ave Post Office Box 5045, Sioux Falls, SD 57117. Dr. Gregory's primary practice is Avera McKennan Hospital & University Health Center in Sioux Falls, South Dakota, part of Avera Health. Dmand AI also links Dr. Gregory to 4 hospitals and 7 medical groups.
What is Dr. Christopher Gregory's office phone number?
The practice phone on file for Dr. Gregory is (605) 322-8000.
What is Dr. Christopher Gregory's medical license number?
Dr. Gregory holds South Dakota license 5278.
Which hospitals is Dr. Christopher Gregory affiliated with?
Dr. Gregory practices at Avera McKennan Hospital & University Health Center in Sioux Falls, South Dakota. Dr. Gregory is also affiliated with Avera Heart Hospital. Dmand AI links Dr. Gregory to 4 more hospitals.
What medical group is Dr. Christopher Gregory part of?
Dr. Gregory is linked to Avera McKennan Hospital & University Health Center. Dmand AI links Dr. Gregory to 7 more medical groups.
Does Dr. Christopher Gregory accept Medicare?
Yes. CMS data shows Dr. Gregory billed Medicare for 2,972 services in 2024, and Dr. Gregory accepts Medicare assignment.
How many Medicare patients does Dr. Christopher Gregory see?
CMS counts 2,666 Medicare patients who saw Dr. Gregory in 2024, with an average age of 74.
What services does Dr. Christopher Gregory bill to Medicare?
In 2024, Dr. Gregory's most billed Medicare services were diagnostic imaging (71045), nuclear medicine (78815) and diagnostic imaging (71046).
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Where did Dr. Christopher Gregory go to medical school?
Dr. Gregory graduated from Johns Hopkins University School of Medicine in 1985.
Has Dr. Christopher Gregory received payments from drug or device companies?
CMS Open Payments shows $433 in general payments to Dr. Gregory from 4 companies from 2016 to 2024. The largest total came from GE Healthcare.
How long has Dr. Christopher Gregory been practicing?
Dr. Gregory graduated from medical school in 1985, 41 years ago.
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