Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Nicholas W Frederickson, M.D.

Gastroenterology Physician in Washington, MO · enumerated 2010.

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

National Provider Identifier

1154640225

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Registry record

Entity type Individual (Type 1)

Name Dr. Nicholas W Frederickson

Credential M.D.

Sex Male

Practice address 901 Patients First Drive Suite 3300, Washington, MO, 63090

Phone (636) 239-7344

Fax (636) 239-9436

Enumeration date May 27, 2010

Last updated in NPPES Jan 14, 2020

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License R-8906 (IA) Secondary

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License 2016012330 (MO) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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

Where does Nicholas Frederickson practice?

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

What is the NPI number for Nicholas Frederickson?

The National Provider Identifier (NPI) for Nicholas Frederickson is 1154640225, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-01-14.