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Constantine A Manthous, M.D.

Critical Care Medicine (Internal Medicine) Physician in New Britain, CT · enumerated 2006.

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

National Provider Identifier

1780643759

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Registry record

Entity type Individual (Type 1)
Name Constantine A Manthous
Credential M.D.
Sex Male
Practice address 100 Grand St, 100 Grand Street, New Britain, CT, 06052
Phone (860) 224-5011
Enumeration date Mar 20, 2006
Last updated in NPPES Jul 30, 2012

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 031195 (CT) Secondary
207RC0200X Critical Care Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 031195 (CT) 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
001311951 Medicaid CT -

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 Constantine Manthous practice?
The practice location on file with NPPES is in New Britain, CT. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Constantine Manthous?
The National Provider Identifier (NPI) for Constantine Manthous is 1780643759, 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 2012-07-30.