Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mary Ellen Bieniasz, NP

Nurse Practitioner in Ypsilanti, MI · enumerated 2006.

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

National Provider Identifier

1598771362

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Registry record

Entity type Individual (Type 1)

Name Mary Ellen Bieniasz

Credential NP

Sex Female

Practice address 200 Arnet St, Suite 200, Ypsilanti, MI, 48198

Phone (734) 484-7288

Enumeration date Jul 31, 2006

Last updated in NPPES Feb 10, 2010

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 4704101775 (MI) Primary

NP · Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority. About the NP 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

What specialty is Mary Bieniasz?

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

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.

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Vincent Dinick Plastic Surgery Physician · Ypsilanti, MI NPI 1871591883 James Gilsdorf Surgery Physician · Ypsilanti, MI NPI 1295794683 William Binder Family Medicine Physician · Ypsilanti, MI NPI 1427000819 W.J.B., M.D., P.C. Family Medicine Physician · Ypsilanti, MI NPI 1740233634 Rosens Pharmacy Community/Retail Pharmacy · Ypsilanti, MI NPI 1215979505 Terence Joiner Pediatrics Physician · Ypsilanti, MI NPI 1174539324 Layla Mohammed Pediatrics Physician · Ypsilanti, MI NPI 1184630345 Yolaine Civil Pediatrics Physician · Ypsilanti, MI NPI 1013025691

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-02-10.