NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Diana L Guynn, NP

Family Nurse Practitioner in Carmel, IN · enumerated 2015.

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

National Provider Identifier

1235516592

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Ms. Diana L Guynn
Credential NP
Sex Female
Practice address 13090 Petigru St, Carmel, IN, 46032
Enumeration date May 6, 2015
Last updated in NPPES Oct 15, 2020

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 71005441A (IN) Primary
NP · Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority. About the NP 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

How do I verify Diana Guynn's NPI record?
Cross-check NPI 1235516592 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1235516592 active?
Yes, as of the latest NPPES snapshot, NPI 1235516592 is active (record last updated 2020-10-15).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-10-15.