Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Leanne E. Watson-Ficken, D.O.

Internal Medicine Physician in Chesterfield, MO · enumerated 2006 · practices at Mercy Aco Clinical Services Inc.

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

National Provider Identifier

1164451373

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Registry record

Entity type Individual (Type 1)

Name Leanne E. Watson-Ficken

Credential D.O.

Sex Female

Practice address 15740 S Outer 40 Rd, Chesterfield, MO, 63017

Phone (636) 735-4268

Enumeration date Jul 1, 2006

Last updated in NPPES May 24, 2019

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 2005015459 (MO) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO 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 1164451373 active?

Yes, as of the latest NPPES snapshot, NPI 1164451373 is active (record last updated 2019-05-24).

How do I verify Leanne Watson-Ficken's NPI record?

Cross-check NPI 1164451373 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 2019-05-24.