Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Mary Ryan Drouillard, R.N.

Registered Nurse in Cadillac, MI · enumerated 2009.

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

National Provider Identifier

1114250263

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Registry record

Entity type Individual (Type 1)

Name Mrs. Mary Ryan Drouillard

Credential R.N.

Sex Female

Practice address 460 Pearl St, Cadillac, MI, 49601

Phone (231) 775-0101

Enumeration date Sep 8, 2009

Last updated in NPPES Sep 8, 2009

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License 4704160220 (MI) 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 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 Mary Drouillard?

Mary Drouillard 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 2009-09-08.