Mr. Christopher Gregory, MD
Mr. Christopher Gregory is a Diagnostic Radiology Physician provider (Radiology) practicing in Sioux Falls, SD, registered in the NPPES registry with NPI 1821050212 since 2006. The credential MD stands for Doctor of Medicine.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1821050212 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Mr. Christopher Gregory |
| Credential | MD |
| Sex | Male |
| Practice address | 1325 S. CLIFF AVE, Sioux Falls, SD, 57105 |
| Phone | 6053227510 |
| Fax | 6053226475 |
| Enumeration date | 2006-04-03 |
| Last updated in NPPES | 2018-10-17 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 2085R0202X | Diagnostic Radiology Physician | Primary | 5278 | SD |
MD — Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 7200895 | Medicaid | SD | — |
| 7200890 | Medicaid | SD | — |
Copy-ready billing details
Provider: Christopher Gregory, MD NPI: 1821050212 Taxonomy: 2085R0202X (Diagnostic Radiology Physician) Address: 1325 S. CLIFF AVE, Sioux Falls, SD, 57105
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1760308290 | Nicholas Tieszen | Individual | Flight Registered Nurse | Sioux Falls, SD |
| 1821951724 | Carly Hohman | Individual | Certified Registered Nurse Anesthetist | Sioux Falls, SD |
| 1568460772 | Avera Mckennan | Organization | General Acute Care Hospital | Sioux Falls, SD |
| 1841285707 | Jeffrey Bard | Individual | Certified Registered Nurse Anesthetist | Sioux Falls, SD |
| 1669469821 | Thomas Johnson | Individual | Pharmacotherapy Pharmacist | Sioux Falls, SD |
| 1427032572 | Kevin Turneau | Individual | Diagnostic Radiology Physician | Sioux Falls, SD |
| 1104896083 | Jose Marius Dosado | Individual | Neonatal-Perinatal Medicine Physician | Sioux Falls, SD |
| 1952371825 | Kandi Mcmenamy | Individual | Neonatal-Perinatal Medicine Physician | Sioux Falls, SD |
Verify this record
Cross-check NPI 1821050212 against the authoritative CMS record: view Mr. Christopher Gregory on the official NPPES registry .
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.
Frequently asked questions
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Is this the official NPI registry?
Source: CMS NPPES (public data). Snapshot 2026-07-09. Provider record last updated 2018-10-17.