Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Nicholas John Karis, M.D.

Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician in Baltimore, MD · enumerated 2007.

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

National Provider Identifier

1518140946

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Registry record

Entity type Individual (Type 1)

Name Nicholas John Karis

Credential M.D.

Sex Male

Practice address 2435 W Belvedere Ave Ste 42, Baltimore, MD, 21215

Phone (410) 601-6491

Fax (410) 601-5835

Enumeration date Dec 7, 2007

Last updated in NPPES Jan 29, 2020

Taxonomy & licenses

208G00000X Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician Allopathic & Osteopathic Physicians · License 036104895 (IL) Secondary

208G00000X Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician Allopathic & Osteopathic Physicians · License 01065438A (IN) Secondary

208G00000X Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician Allopathic & Osteopathic Physicians · License 261058 (NY) 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
200913030C	Medicaid	IN	-
200913030D	Medicaid	IN	-
03351631	Medicaid	NY	-
200913030A	Medicaid	IN	-
036104895	Medicaid	IL	-
200913030B	Medicaid	IN	-
200913030E	Medicaid	IN	-

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 Nicholas Karis's NPI record?

Cross-check NPI 1518140946 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1518140946 active?

Yes, as of the latest NPPES snapshot, NPI 1518140946 is active (record last updated 2020-01-29).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-01-29.