Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Thelma Jean Stiegler, FNP

Nurse Practitioner in Rehoboth Beach, DE · enumerated 2021.

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

National Provider Identifier

1427728880

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Thelma Jean Stiegler

Credential FNP

Sex Female

Practice address 18947 John J Williams Hwy Unit 101, Rehoboth Beach, DE, 19971

Phone (302) 645-3010

Fax (302) 645-5718

Enumeration date Sep 16, 2021

Last updated in NPPES Feb 25, 2025

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 4704253509 (MI) Secondary

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 12020 (MN) Secondary

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License LG-0013128 (DE) Primary

FNP · Family Nurse Practitioner: A nurse practitioner certified in family practice across the lifespan. About the FNP 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 Thelma Stiegler's NPI record?

Cross-check NPI 1427728880 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1427728880 active?

Yes, as of the latest NPPES snapshot, NPI 1427728880 is active (record last updated 2025-02-25).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-02-25.