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Mary Susan Mcmahon, NP

Nurse Practitioner in Eastpointe, MI · enumerated 2006 · practices at Grosse Pointe Allergy & Asthma Center PC.

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

National Provider Identifier

1821174012

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Registry record

Entity type Individual (Type 1)
Name Mary Susan Mcmahon
Credential NP
Sex Female
Practice address 21300 Kelly Road, Eastpointe, MI, 48021
Phone (586) 447-4200
Fax (586) 447-4208
Enumeration date Oct 31, 2006
Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 4704101463 (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.

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Frequently asked questions

What is the NPI number for Mary Mcmahon?
The National Provider Identifier (NPI) for Mary Mcmahon is 1821174012, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mary Mcmahon practice?
The practice location on file with NPPES is in Eastpointe, MI. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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