Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Tammy Mahroos, CRNA

Certified Registered Nurse Anesthetist in Norwalk, CT · enumerated 2005.

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

National Provider Identifier

1235132093

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Registry record

Entity type Individual (Type 1)

Name Tammy Mahroos

Credential CRNA

Sex Female

Practice address 24 Stevens St, Norwalk, CT, 06850

Phone (203) 852-2276

Fax (203) 852-2527

Enumeration date May 24, 2005

Last updated in NPPES Nov 7, 2007

Taxonomy & licenses

367500000X Certified Registered Nurse Anesthetist Physician Assistants & Advanced Practice Nursing Providers · License 000675 (CT) Primary

CRNA · Certified Registered Nurse Anesthetist: An advanced practice nurse specializing in anesthesia care. About the CRNA credential

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 Tammy Mahroos practice?

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

What is the NPI number for Tammy Mahroos?

The National Provider Identifier (NPI) for Tammy Mahroos is 1235132093, 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 2007-11-07.