Mark Warren Fox, MD
Mark Warren Fox is a Neurological Surgery Physician provider (Neurological Surgery) practicing in Sioux Falls, SD, registered in the NPPES registry with NPI 1750355236 since 2006. The credential MD stands for Doctor of Medicine.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1750355236 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Mark Warren Fox |
| Credential | MD |
| Sex | Male |
| Practice address | 1100 E 21ST ST, STE 220, Sioux Falls, SD, 57105 |
| Phone | 6053224825 |
| Fax | 6053224826 |
| Enumeration date | 2006-02-14 |
| Last updated in NPPES | 2009-01-15 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 207T00000X | Neurological Surgery Physician | Primary | 4319 | 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 |
|---|---|---|---|
| 320715300 | Medicaid | MN | — |
| 4319 | Other | SD | DAKOTACARE |
| 57105AU02 | Other | SD | WPS TRICARE |
| 63D16FO | Other | MN | CC SYSTEMS/BLUE PLUS FOR DATES PRIOR TO 9-1-07 |
| 1750355236 | Other | SD | ARAZ/ AMERICA'S PPO |
| 0600325 | Other | SD | MEDICA |
| 231714 | Other | SD | MIDLANDS CHOICE |
| 46L94FO | Other | MN | CC SYSTEMS/BLUE PLUS |
| C83121001265 | Other | — | PREFERRED ONE |
| 6100533 | Medicaid | SD | — |
| 10025562500 | Medicaid | NE | — |
| 4992870 | Other | SD | BLUE CROSS |
| HP13310 | Other | SD | HEALTHPARTNERS |
Copy-ready billing details
Provider: Mark Fox, MD NPI: 1750355236 Taxonomy: 207T00000X (Neurological Surgery Physician) Address: 1100 E 21ST ST, STE 220, Sioux Falls, SD, 57105
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1073635462 | Amit Gupta | Individual | Pulmonary Disease Physician | Sioux Falls, SD |
| 1649461369 | Avera Mckennan | Organization | Neurological Surgery Physician | Sioux Falls, SD |
| 1093908501 | Avera Mckennan | Organization | Neurological Surgery Physician | Sioux Falls, SD |
| 1366613473 | Mark W Fox MD PC | Organization | Neurological Surgery Physician | Sioux Falls, SD |
| 1083862486 | Michelle Schuman | Individual | Physical Therapist | Sioux Falls, SD |
| 1003064767 | Paula Jones | Individual | Physical Therapist | Sioux Falls, SD |
| 1841427770 | Avera Mckennan | Organization | Physical Medicine & Rehabilitation Physician | Sioux Falls, SD |
| 1073131405 | Nicole Westra | Individual | Family Nurse Practitioner | Sioux Falls, SD |
Verify this record
Cross-check NPI 1750355236 against the authoritative CMS record: view Mark Warren Fox 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 2026-07-11. Provider record last updated 2009-01-15.