Mark W Fox MD PC

Mark W Fox MD PC is a healthcare organization registered as Neurological Surgery Physician in Sioux Falls, SD, holding Type 2 (organization) NPI 1366613473 since 2008. The authorized official on file is Mark Fox, Owner.

✓ Active NPI ✓ Valid NPI checksum

NPI	1366613473
Entity type	Organization (Type 2)
Legal business name	Mark W Fox MD PC
Practice address	1100 E 21ST ST, SUITE 220, Sioux Falls, SD, 57105
Phone	6053224825
Fax	6053224826
Enumeration date	2008-03-17
Last updated in NPPES	2008-07-18

Authorized official

Name	Mark Fox
Title	Owner
Phone	6053224825

Taxonomy & classification

Taxonomy code	Specialty	Primary	License	State
207T00000X	Neurological Surgery Physician	Primary	—	—

Other identifiers

Identifier	Type	State	Issuer
63D15FO	Other	SD	BLUE SHIELD OF MN

Copy-ready billing details

Provider: Mark W Fox MD PC
NPI: 1366613473
Taxonomy: 207T00000X (Neurological Surgery Physician)
Address: 1100 E 21ST ST, SUITE 220, Sioux Falls, SD, 57105

Providers at this address

NPI	Name	Type	Specialty	Location
1750355236	Mark Fox	Individual	Neurological Surgery Physician	Sioux Falls, SD
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
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 1366613473 against the authoritative CMS record: view Mark W Fox MD PC 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

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2008-07-18. Verify at npiregistry.cms.hhs.gov.

Where is Mark W Fox MD PC located?

The practice location on file with NPPES is in Sioux Falls, SD.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2008-07-18.