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Stephen D Koss, MD

Q: What is the NPI number for Stephen Koss?

The National Provider Identifier (NPI) for Stephen Koss is 1265482897, a Type 1 (individual) record in the CMS NPPES registry.

Sports Medicine (Orthopaedic Surgery) Physician in Hackettstown, NJ · enumerated 2006.

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

National Provider Identifier

1265482897

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Registry record

Entity type Individual (Type 1)

Name Stephen D Koss

Credential MD

Sex Male

Practice address 108 Bilby Rd, Ste 201, Hackettstown, NJ, 07840

Phone (908) 684-3005

Fax (908) 684-3301

Enumeration date May 12, 2006

Last updated in NPPES Feb 13, 2013

Taxonomy & licenses

207XX0005X Sports Medicine (Orthopaedic Surgery) Physician Allopathic & Osteopathic Physicians · License 25MA06416800 (NJ) 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
7165307	Medicaid	NJ	-

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 Stephen Koss practice?

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

What is the NPI number for Stephen Koss?

The National Provider Identifier (NPI) for Stephen Koss is 1265482897, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-02-13.