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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. George Tolis Jr., M.D.

Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician in Boston, MA · enumerated 2005.

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

National Provider Identifier

1841272283

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Registry record

Entity type Individual (Type 1)
Name Dr. George Tolis Jr.
Credential M.D.
Sex Male
Practice address 732 Harrison Ave, Fl 3 West, Preston Bldg., Boston, MA, 02118
Phone (617) 638-7350
Fax (617) 638-7228
Enumeration date Nov 18, 2005
Last updated in NPPES May 19, 2026

Taxonomy & licenses

208G00000X Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician Allopathic & Osteopathic Physicians · License 224934 (NY) Primary
208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 230131 (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
110075160A Medicaid MA -
3101505 Medicaid NH -

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

Is NPI 1841272283 active?
Yes, as of the latest NPPES snapshot, NPI 1841272283 is active (record last updated 2026-05-19).
How do I verify George Tolis's NPI record?
Cross-check NPI 1841272283 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-05-19.