Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Sheryl L. Marckstadt, CNP

Family Nurse Practitioner in Sioux Falls, SD · enumerated 2005.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1487658837

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Registry record

Entity type Individual (Type 1)

Name Sheryl L. Marckstadt

Credential CNP

Sex Female

Practice address 5027 S Bur Oak Pl, Sioux Falls, SD, 57108

Phone (605) 271-9000

Fax (605) 271-9001

Enumeration date Jun 13, 2005

Last updated in NPPES Apr 18, 2022

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 0312 (SD) Primary

Other identifiers

Identifier	Type	State	Issuer
6822785	Medicaid	SD	-

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 → Validate an NPI →

Frequently asked questions

Where does Sheryl Marckstadt practice?

The practice location on file with NPPES is in Sioux Falls, SD. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Sheryl Marckstadt?

The National Provider Identifier (NPI) for Sheryl Marckstadt is 1487658837, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Jeffrey Luther Physical Medicine & Rehabilitation Physician · Sioux Falls, SD NPI 1720030521 Ludoc Enterprises LLC Physical Medicine & Rehabilitation Physician · Sioux Falls, SD NPI 1578518452 Sioux Falls Primary Care Services PC Family Medicine Physician · Sioux Falls, SD NPI 1255408977 Abigail Gramlick-Mueller Family Nurse Practitioner · Sioux Falls, SD NPI 1477786200 Medical Management Partners, Inc. Internal Medicine Physician · Sioux Falls, SD NPI 1376851659

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-04-18.