Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Harald Wolfgang Lettner, PHD

Clinical Neuropsychologist in Naples, FL · enumerated 2006.

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

National Provider Identifier

1063523678

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Registry record

Entity type Individual (Type 1)

Name Harald Wolfgang Lettner

Credential PHD

Sex Male

Practice address Naples, FL, 34102

Phone (239) 434-6111

Fax (239) 649-0472

Enumeration date Aug 31, 2006

Last updated in NPPES Feb 18, 2015

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

103G00000X Clinical Neuropsychologist Behavioral Health & Social Service Providers · License PY4878 (FL) Primary

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License PY4878 (FL) Secondary

PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential

Other identifiers

Identifier	Type	State	Issuer
PY4878	Other	FL	LICENSE NUMBER
59545	Other	FL	BLUE CROSS BLUE SHIELD

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

What is the NPI number for Harald Lettner?

The National Provider Identifier (NPI) for Harald Lettner is 1063523678, a Type 1 (individual) record in the CMS NPPES registry.

Where does Harald Lettner practice?

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

Other providers at this practice address

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Regina Gower Mental Health Counselor · Naples, FL NPI 1538167515 Solnes Tobal Internal Medicine Physician · Naples, FL NPI 1982672135 Sheldon Weiner, MD, PA Psychiatry Physician · Naples, FL NPI 1437197019 Jacquelyn Fresenius Mental Health Counselor · Naples, FL NPI 1386655355 We Care Healthcare Inc. Adult Health Nurse Practitioner · Naples, FL NPI 1225147325 Linda Alexander Clinical Psychologist · Naples, FL NPI 1952409179 Harald W Lettner Phd PA Clinical Neuropsychologist · Naples, FL NPI 1508950312 Ivette Gomez Mental Health Counselor · Naples, FL NPI 1275612954

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-02-18.