Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Douglas E Klier, R.N.

Registered Nurse in Mentor, OH · enumerated 2011.

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

National Provider Identifier

1275821373

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Registry record

Entity type Individual (Type 1)

Name Mr. Douglas E Klier

Credential R.N.

Sex Male

Practice address 8701 Mentor Ave, Mentor, OH, 44060

Phone (440) 266-0770

Fax (440) 266-0257

Enumeration date Jul 11, 2011

Last updated in NPPES Jul 11, 2011

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License RN 370055 (OH) Primary

RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN 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

Is NPI 1275821373 active?

Yes, as of the latest NPPES snapshot, NPI 1275821373 is active (record last updated 2011-07-11).

How do I verify Douglas Klier's NPI record?

Cross-check NPI 1275821373 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-07-11.