Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Margaret Poisson Franken, CRNA

Registered Nurse in Kalamazoo, MI · enumerated 2007.

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

National Provider Identifier

1841415767

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Registry record

Entity type Individual (Type 1)

Name Mrs. Margaret Poisson Franken

Credential CRNA

Sex Female

Practice address 900 Peeler St, Kalamazoo, MI, 49008

Phone (269) 345-0606

Enumeration date Apr 16, 2007

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License 4704134586 (MI) Primary

CRNA · Certified Registered Nurse Anesthetist: An advanced practice nurse specializing in anesthesia care. About the CRNA 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 this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Margaret Franken?

Margaret Franken is registered in NPPES with the primary taxonomy of Registered Nurse. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.