Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark Frederick Riederer, MD

Orthopaedic Surgery Physician in Salt Lake City, UT · enumerated 2006.

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

National Provider Identifier

1225076359

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Mark Frederick Riederer

Credential MD

Sex Male

Practice address 590 Wakara Way, Salt Lake City, UT, 84108

Phone (801) 587-7109

Enumeration date Jun 2, 2006

Last updated in NPPES Dec 9, 2025

Taxonomy & licenses

2080S0010X Pediatric Sports Medicine Physician Allopathic & Osteopathic Physicians · License 4301083195 (MI) Secondary

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 4301083195 (MI) Secondary

2080S0012X Pediatric Sleep Medicine Physician Allopathic & Osteopathic Physicians · License MD462484 (PA) Secondary

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 13944824-1205 (UT) Primary

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 43020 (TN) Secondary

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 4301083195 (MI) Secondary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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.

Read the full guide → Validate an NPI →

Frequently asked questions

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.

What specialty is Mark Riederer?

Mark Riederer is registered in NPPES with the primary taxonomy of Orthopaedic Surgery Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-12-09.