Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mark Korthals, OD
Optometrist in Maple Grove, MN · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1215091749
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Registry record
Entity type Individual (Type 1)
Name Mark Korthals
Credential OD
Sex Male
Practice address 13195 Weaver Lake Rd, Maple Grove, MN, 55369
Phone (763) 420-5112
Fax (763) 420-6957
Enumeration date Dec 20, 2006
Last updated in NPPES Sep 4, 2015
Taxonomy & licenses
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses.
About the OD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 151668000 | Medicaid | MN | - |
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
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 Korthals?
Mark Korthals is registered in NPPES with the primary taxonomy of Optometrist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → Vicki Luehmann Optometrist · Maple Grove, MN NPI 1942399456 Brokea Inc. Optometrist · Maple Grove, MN NPI 1346453735 Ben Hume Optometrist · Maple Grove, MN NPI 1487864914 Kelly Crenna Optometrist · Maple Grove, MN NPI 1053540690 Brandon Larson Optometrist · Maple Grove, MN NPI 1831453455 Jayden2006 Optician · Maple Grove, MN NPI 1922347848 John Mueller Optometrist · Maple Grove, MN NPI 1659728756 Rachel Knutson Corneal and Contact Management Optometrist · Maple Grove, MN NPI 1760830012
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-09-04.