Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Mary Lois Dunn, R.N.

Registered Nurse in Ann Arbor, MI · enumerated 2011.

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

National Provider Identifier

1366734311

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Registry record

Entity type Individual (Type 1)

Name Mrs. Mary Lois Dunn

Credential R.N.

Sex Female

Practice address 2850 S Industrial Hwy Ste 75, Ann Arbor, MI, 48104

Phone (734) 477-7204

Enumeration date May 10, 2011

Last updated in NPPES May 10, 2011

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License 4704279010 (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.

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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 Dunn?

Mary Dunn 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 2011-05-10.