Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. A.E. Hertzler Knox, MD

Pediatrics Physician in Bristol, CT · enumerated 2006.

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

National Provider Identifier

1255344321

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Registry record

Entity type Individual (Type 1)

Name Dr. A.E. Hertzler Knox

Credential MD

Sex Male

Practice address Prohealth Physicians of Bristol, 1251 Farmington Ave., Bristol, CT, 06010

Phone (860) 584-4535

Fax (860) 589-7656

Enumeration date Aug 13, 2006

Last updated in NPPES Sep 11, 2025

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 029692 (CT) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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 A.E. Hertzler Knox practice?

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

What is the NPI number for A.E. Hertzler Knox?

The National Provider Identifier (NPI) for A.E. Hertzler Knox is 1255344321, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.