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MARY SUSAN MCMAHON NP
NPI 1821174012
Nurse Practitioner in Eastpointe, MI

Active since October 31, 2006PECOS Enrolled
21300 KELLY ROAD, EASTPOINTE, MI 48021(586) 447-4200(586) 447-4208 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Mary Susan Mcmahon Np NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARY SUSAN MCMAHON NP (NPI 1821174012) is an individual nurse practitioner in Eastpointe, Michigan, licensed in Michigan (4704101463) and active in the NPI registry since October 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1821174012
Entity TypeIndividualFemale
Primary Taxonomy363L00000X
Provider Legal NameMARY SUSAN MCMAHONCredential: NP
Location Address21300 KELLY ROADEastpointe, MI 48021
Mailing Address21300 Kelly RoadEastpointe, MI 48021 · (586) 447-4200 · Fax (586) 447-4208
Phone(586) 447-4200
Fax(586) 447-4208
Sole ProprietorNo
Enumeration DateOctober 31, 2006
Last NPPES UpdateJuly 8, 2007
✔ NPI 1821174012 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363L00000X
License✔ Licensed in MI · 4704101463
Definition
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
21300 KELLY ROAD, Eastpointe, MI 48021
Open in Google Maps ↗

Other Identifiers 2

Medicare ID-Type UnspecifiedON53030
Medicare UPINS99617

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter from Meridian, Ambetter Health.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mary Susan Mcmahon Np is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Mary Mcmahon reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Henry Ford Health St. John Hospital
10 mi
Nurse Practitioner
1 FORD PL STE 3A
Detroit, MI 48202
  • Reassigned Medicare billing, Michigan enrollment
  • 30 clinicians in this Medicare group
NPI 1700831500 (248) 680-8000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 48021 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$90.76 typical visit price
range $58.04 – $177.36
Typical copayment $22.69 (range $14.51 – $44.34)
Most-billed visit code 99203
Established Patient
$102.35 typical visit price
range $18.32 – $143.49
Typical copayment $25.58 (range $4.58 – $35.87)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

GROSSE POINTE ALLERGY & ASTHMA CENTER PC
Allergy & Immunology
21300 KELLY ROAD
EASTPOINTE, MI 48021
Macomb County (586) 447-4200
JOAN M OLEAR NP
Nurse Practitioner
21300 KELLY ROAD
EASTPOINTE, MI 48021
Macomb County (586) 447-4200

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mary Mcmahon's NPI number?

The NPI number for Mary Mcmahon is 1821174012. It was assigned to this individual provider in the NPPES registry on October 31, 2006.

Where is Mary Mcmahon located?

Mary Mcmahon practices at 21300 Kelly Road, Eastpointe, MI 48021. The listed phone number is (586) 447-4200.

What is Mary Mcmahon's specialty?

The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.

Is Mary Mcmahon enrolled in Medicare?

Yes. Mary Mcmahon is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Mary Mcmahon's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mary Mcmahon reassigns Medicare benefits to Henry Ford Health St. John Hospital (Detroit, MI). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Mary Mcmahon's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mary Mcmahon accept?

Health plans from Ambetter Health, Ambetter from Buckeye Health Plan and Ambetter from Meridian list Mary Mcmahon as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Mary Mcmahon was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.