Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mary L. Klatt, DNP, RXN, PMHCNS-BC

Q: What is the NPI number for Mary Klatt?

The National Provider Identifier (NPI) for Mary Klatt is 1477600690, a Type 1 (individual) record in the CMS NPPES registry.

Adult Psychiatric/Mental Health Clinical Nurse Specialist in Denver, CO · enumerated 2007.

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

National Provider Identifier

1477600690

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Registry record

Entity type Individual (Type 1)

Name Dr. Mary L. Klatt

Credential DNP, RXN, PMHCNS-BC

Sex Female

Practice address 1055 Clermont St, Denver, CO, 80220

Phone (303) 399-8020

Fax (303) 393-5151

Enumeration date Jan 3, 2007

Last updated in NPPES Apr 17, 2015

Taxonomy & licenses

364SP0809X Adult Psychiatric/Mental Health Clinical Nurse Specialist Physician Assistants & Advanced Practice Nursing Providers · License 3075-33 (WI) Primary

364SP0809X Adult Psychiatric/Mental Health Clinical Nurse Specialist Physician Assistants & Advanced Practice Nursing Providers · License RXN.0101249-CNS (CO) Secondary

DNP · Doctor of Nursing Practice: A clinical doctorate for advanced practice nurses. About the DNP 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

What is the NPI number for Mary Klatt?

The National Provider Identifier (NPI) for Mary Klatt is 1477600690, a Type 1 (individual) record in the CMS NPPES registry.

Where does Mary Klatt practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-04-17.