Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Carla May Van Holsteijn, RD/LD
Registered Dietitian in Spencer, IA · enumerated 2011.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1821376500
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Registry record
Entity type Individual (Type 1)
Name Carla May Van Holsteijn
Credential RD/LD
Sex Female
Practice address 1200 1st Ave E, Spencer, IA, 51301
Phone (712) 264-6198
Enumeration date Jul 28, 2011
Last updated in NPPES Jul 28, 2011
Taxonomy & licenses
133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License 00854 (IA) Primary
RD · Registered Dietitian: A nutrition professional credentialed by the Commission on Dietetic Registration.
About the RD credential
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.
Frequently asked questions
What specialty is Carla Van Holsteijn?
Carla Van Holsteijn is registered in NPPES with the primary taxonomy of Registered Dietitian. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
Other providers at this practice address
Browse all → Midwest Radiology and Imaging PC Medical Specialty Clinic/Center · Spencer, IA NPI 1720081524 John Follows Orthopaedic Surgery Physician · Spencer, IA NPI 1508869413 Philip Deffer Orthopaedic Hand Surgery Physician · Spencer, IA NPI 1356344261 Katie Hesse Physical Therapist · Spencer, IA NPI 1487657250 Nwia Bone, Joint & Sports Surgeons, PC Orthopaedic Surgery Physician · Spencer, IA NPI 1760485528 Charles Crouch Diagnostic Radiology Physician · Spencer, IA NPI 1477556280 Stephen Frushour Orthopaedic Surgery of the Spine Physician · Spencer, IA NPI 1881687739 Lois Stillman Registered Dietitian · Spencer, IA NPI 1225024383
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-07-28.