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Dr. Mark P Borsuk, O.D.

Optometrist in Gaithersburg, MD · enumerated 2005 · practices at Modern Eyes, LLC.

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

National Provider Identifier

1639171960

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Registry record

Entity type Individual (Type 1)
Name Dr. Mark P Borsuk
Credential O.D.
Sex Male
Practice address 108 Olde Towne Ave, Ste 16, Gaithersburg, MD, 20877
Phone (240) 631-2255
Fax (240) 631-2299
Enumeration date May 31, 2005
Last updated in NPPES Dec 14, 2007

Taxonomy & licenses

152WC0802X Corneal and Contact Management Optometrist Eye and Vision Services Providers · License TA1522 (MD) Secondary
152WV0400X Vision Therapy Optometrist Eye and Vision Services Providers · License TA1522 (MD) Secondary
152W00000X Optometrist Eye and Vision Services Providers · License TA1522 (MD) Primary
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.

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Frequently asked questions

What is the NPI number for Mark Borsuk?
The National Provider Identifier (NPI) for Mark Borsuk is 1639171960, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mark Borsuk practice?
The practice location on file with NPPES is in Gaithersburg, MD. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-12-14.