Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Karl Steven Stoler, O.D.
Optometrist in Mentor, OH · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1689711814
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Registry record
Entity type Individual (Type 1)
Name Dr. Karl Steven Stoler
Credential O.D.
Sex Male
Practice address 7850 Mentor Ave, Mentor, OH, 44060
Phone (440) 974-3399
Fax (440) 255-9799
Enumeration date Jan 30, 2007
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses.
About the OD 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
How do I verify Karl Stoler's NPI record?
Cross-check NPI 1689711814 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1689711814 active?
Yes, as of the latest NPPES snapshot, NPI 1689711814 is active (record last updated 2007-07-08).
Other providers at this practice address
Browse all → Abdulwahed Qotaynah Optometrist · Mentor, OH NPI 1689608861 Usv Optical Inc. Eyewear Supplier · Mentor, OH NPI 1962423863 Abdul Qotaynah O.D., Inc. Optometrist · Mentor, OH NPI 1740318542 Karl S. Stoler, O.D. & Associates, Inc. Optometrist · Mentor, OH NPI 1811011075 Halley Lamier Optometrist · Mentor, OH NPI 1730527615
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.