Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark A Slabaugh, M.D.

Glaucoma Specialist (Ophthalmology) Physician in Columbus, OH · enumerated 2006.

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

National Provider Identifier

1669583597

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Registry record

Entity type Individual (Type 1)

Name Mark A Slabaugh

Credential M.D.

Sex Male

Practice address 915 Olentangy River Rd Fl 5, Columbus, OH, 43212

Phone (614) 293-8116

Fax (614) 293-5315

Enumeration date Aug 31, 2006

Last updated in NPPES Nov 14, 2024

Taxonomy & licenses

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License 35123143 (OH) Secondary

207WX0009X Glaucoma Specialist (Ophthalmology) Physician Allopathic & Osteopathic Physicians · License 35123143 (OH) Primary

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

Where does Mark Slabaugh practice?

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

What is the NPI number for Mark Slabaugh?

The National Provider Identifier (NPI) for Mark Slabaugh is 1669583597, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-11-14.