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Mark Koshar, M.D.

Internal Medicine Physician in Easton, PA · enumerated 2005.

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

National Provider Identifier

1538161963

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Registry record

Entity type Individual (Type 1)
Name Mark Koshar
Credential M.D.
Sex Male
Practice address 3735 Nazareth Rd, Suite 301, Easton, PA, 18045
Phone (610) 829-2200
Fax (610) 829-2211
Enumeration date Aug 15, 2005
Last updated in NPPES Mar 2, 2016

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License MD016576E (PA) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
0006859310004 Medicaid PA -
45295 Other PA BLUE SHIELD

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

Where does Mark Koshar practice?
The practice location on file with NPPES is in Easton, PA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Mark Koshar?
The National Provider Identifier (NPI) for Mark Koshar is 1538161963, 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 2016-03-02.