Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Stephen Eric Karp, M.D.

Surgery Physician in Burlington, MA · enumerated 2006.

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

National Provider Identifier

1124127568

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Registry record

Entity type Individual (Type 1)

Name Dr. Stephen Eric Karp

Credential M.D.

Sex Male

Practice address Lahey Clinic, 41 Mall Road, Burlington, MA, 01805

Phone (781) 744-8800

Fax (781) 744-5636

Enumeration date Sep 22, 2006

Last updated in NPPES Jun 12, 2019

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 211106 (MA) Primary

2086X0206X Surgical Oncology Physician Allopathic & Osteopathic Physicians · License 211106 (MA) Secondary

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
110007367A	Medicaid	MA	-

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

How do I verify Stephen Karp's NPI record?

Cross-check NPI 1124127568 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1124127568 active?

Yes, as of the latest NPPES snapshot, NPI 1124127568 is active (record last updated 2019-06-12).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-06-12.