Margaret Halloran NP
About this NPIWhat this record shows.
NPI 1497220131 is registered to Margaret Halloran NP, a Nurse Practitioner practising at 1500 E Medical Center Dr in Ann Arbor, Michigan. Nurse Practitioner is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Margaret Halloran NP has been enumerated in the National Provider Identifier (NPI) registry since 2018.
Medicare enrollment
This provider holds 2 Medicare enrollments on file with the Provider Enrollment, Chain and Ownership System (PECOS). Each enrollment carries a public Medicare Enrollment ID (ENRLMT_ID) used by billers and intermediaries.
Practitioner
- I20181106001881Nurse PractitionerPA
- I20250519000826Nurse PractitionerMI
Source: CMS PECOS public enrollment file.
Insurance & acceptsHow to confirm coverage.
The National Plan and Provider Enumeration System (NPPES) registry does not include commercial insurance network data, so we cannot show which plans Margaret Halloran NP accepts. To confirm in-network status with your specific health plan, contact Margaret Halloran NP directly at (734) 936-4000.
Frequently asked
Yes. NPI 1497220131 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Nurse Practitioner is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy.
The CMS NPPES Public Registry at npiregistry.cms.hhs.gov is the authoritative source. FindMyNPI mirrors this dataset and refreshes monthly. For real-time verification, you can also call the provider's office at (734) 936-4000.
An individual healthcare provider has a single Type-1 NPI for life. Organisations can hold separate Type-2 NPIs per location, specialty, or sub-entity. Margaret Halloran NP is a Type-1 individual NPI.