Margaret Kathleen Halloran, NP

Primary specialty

Nurse PractitionerTaxonomy code 363L00000X

License

4704336944 Issued in MI

Practice address

1500 E Medical Center Dr
Ann Arbor, MI 48109-5000

Phone

(734) 936-4000

NPI assigned

Oct 9, 2018

Sex

Female

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 2

Addresses

Electronic endpoints 2

Medicare fee-for-service enrollment

Enrolled in PA, MI2 enrollments

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: No

Green means eligible to order or refer.

Enrollment records 2

Specialty

Nurse Practitioner

Education

Other, 2018

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Regents of the University of MichiganGroup PAC ID 3779496856, 3,344 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• University of Michigan Health System Hospital, Ann Arbor, MI, CCN 230046

Medicare enrollment (NPD)

Enrolled

Credentials

Nurse Practitioner

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: mhalloran150284@direct.trinity-health.org

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Regents of the University of Michigan

  • Nurse Practitioner
  • Ann Arbor, MI
  • NPI 1447275102
  Medicare reassignment Care Compare group NPD
• Trinity Health Mid-Atlantic Medical Group

  • Surgery Physician
  • Langhorne, PA
  • NPI 1972982361
  Medicare reassignment NPD
• Regents of the University of Michigan

  • Specialty Pharmacy
  • Dexter, MI
  • NPI 1952181919
  NPD
• Trinity Health Mid-Atlantic Medical Group

  • Trauma Surgery Physician
  • Langhorne, PA
  • NPI 1093771271
  NPD
• Trinity Health Mid-Atlantic Medical Group

  • Physical Medicine & Rehabilitation Physician
  • Philadelphia, PA
  • NPI 1639039175
  NPD
• Regents of the University of Michigan

  • General Acute Care Hospital
  • Ann Arbor, MI
  • NPI 1003878539
  NPD (past)
• Trinity Health Mid-Atlantic Medical Group

  • Obstetrics & Gynecology Physician
  • Darby, PA
  • NPI 1639695927
  NPD (past)

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Regents of the University of Michigan

  • General Acute Care Hospital
  • Ann Arbor, MI
  • NPI 1003878539
  Care Compare affiliation

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1539043200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1740441600000",
    "number": "1497220131",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3621 S STATE ST",
            "city": "ANN ARBOR",
            "state": "MI",
            "postal_code": "481081633",
            "telephone_number": "734-647-5299"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1500 E MEDICAL CENTER DR",
            "city": "ANN ARBOR",
            "state": "MI",
            "postal_code": "481095000",
            "telephone_number": "734-936-4000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1501 Lansdowne Ave Ste 208",
            "address_purpose": "LOCATION",
            "city": "Darby",
            "state": "PA",
            "postal_code": "190231333",
            "country_code": "US",
            "telephone_number": "610-237-7922",
            "fax_number": "610-237-3617",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "HALLORAN",
        "first_name": "MARGARET",
        "middle_name": "KATHLEEN",
        "credential": "NP",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2018-10-09",
        "last_updated": "2025-02-25",
        "certification_date": "2025-02-25",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LW0102X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Women's Health",
            "state": "PA",
            "license": "SP019394",
            "primary": false
        },
        {
            "code": "363L00000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner",
            "state": "MI",
            "license": "4704336944",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "margaret.halloran.1@16196.direct.athenahealth.com",
            "affiliation": "Y",
            "endpointDescription": "Mercy Management of Southeastern Pennsylvania Direct Email Address",
            "affiliationName": "Mercy Management of Southeastern Pennsylvania",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "CCD",
            "address_1": "1501 Lansdowne Ave MOB",
            "address_2": "1st Floor",
            "city": "Darby",
            "state": "PA",
            "country_code": "US",
            "postal_code": "19023",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "margaret.halloran.1@16196.direct.athenahealth.com",
            "affiliation": "Y",
            "endpointDescription": "Mercy Management of Southeastern Pennsylvania Direct email address",
            "affiliationName": "Trinity Health Mid-Atlantic Medical Group",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "CCD",
            "address_1": "1501 Lansdowne Ave Ste 208",
            "city": "Darby",
            "state": "PA",
            "country_code": "US",
            "postal_code": "190231333",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Kellie Hallaron, RDN
• Monira Louise Hallaway, LMSW
• Amanda Hallberg, MD
• Blake A Haller, MD
• Christina Hallmann, LLMSW
• Brian R Hallstrom, MD
• Kirsten Etka Hallstrom, PT
• Ross Franklin Halpern, P.H.D, L.P.
• Jane Halpert, TLLP
• D. Yarrow Marie Halstead, M.A., CPSS

• Nurse Practitioner in Ann Arbor, MI
• Providers in Ann Arbor, MI by specialty
• Nurse Practitioner in Michigan

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 25, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.