Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Daniel Underhill

Physician Assistant in Derby, CT · enumerated 2019.

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

National Provider Identifier

1083251490

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Registry record

Entity type Individual (Type 1)

Name Daniel Underhill

Sex Male

Practice address 130 Division St, Derby, CT, 06418

Phone (203) 732-1330

Fax (203) 732-1332

Enumeration date Dec 4, 2019

Last updated in NPPES Aug 13, 2025

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 23.005285 (CT) Primary

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 Daniel Underhill's NPI record?

Cross-check NPI 1083251490 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1083251490 active?

Yes, as of the latest NPPES snapshot, NPI 1083251490 is active (record last updated 2025-08-13).

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Mihaela Boran Psychiatry Physician · Derby, CT NPI 1427058478 Lawrence Gluck Diagnostic Radiology Physician · Derby, CT NPI 1174518773 Matthew Cohen Gastroenterology Physician · Derby, CT NPI 1548241490 Seema Dsouza Internal Medicine Physician · Derby, CT NPI 1851373187 Dorothea Wild Internal Medicine Physician · Derby, CT NPI 1912989187 Linda Nevins Nurse Practitioner · Derby, CT NPI 1982686143 Haq Nawaz Internal Medicine Physician · Derby, CT NPI 1841273919 Frederick Browne Internal Medicine Physician · Derby, CT NPI 1588641955

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-08-13.