Individual provider Active NPI

Erica Karim Blum, NP

  • Nurse Practitioner
  • Livonia, MI
National Provider Identifier
1124454251
Registry record updated Feb 24, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Nurse PractitionerTaxonomy code 363L00000X
License
4704272452 Issued in MI
Practice address
14555 Levan Rd
Suite 311
Livonia, MI 48154
Phone
(734) 655-2692
Fax
(734) 655-4218
NPI assigned
Sep 20, 2013
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Feb 24, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Acute Care Nurse Practitioner 363LA2100X 4704272452 MI
Nurse Practitioner 363L00000X 4704272452 MI Primary

Addresses

Primary practice location

14555 Levan Rd
Suite 311
Livonia, MI 48154

Mailing address

24 Frank Lloyd Wright Drive
Suite J2000
Ann Arbor, MI 48105
Phone (734) 747-6766

Other practice location 1

5301 E Huron River Dr
Ypsilanti, MI 48197-1051
Phone (734) 712-3456

Other names 1

  • Erica Hammar Former name

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MI
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 1

Enrollment IDStateProvider typePAC IDDetails
I20140228001906 MI Practitioner - Nurse Practitioner 9335379825 Reassigns benefits to 3 organizations

Care Compare profile

Medicare Care Compare
Specialty
Nurse Practitioner
Education
Other, 2013
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Regents of the University of MichiganGroup PAC ID 3779496856, 3,344 clinicians
Iha Olma Specialty 1 LLCGroup PAC ID 6901206689, 67 clinicians

Practice addresses (Care Compare)

1500 E Medical Ctr Dr
Ann Arbor, MI 48109-5000
Phone (734) 936-4000

19000 St Joes Pkwy
Livonia, MI 48152-1477

36475 5 Mile Rd
Livonia, MI 48154-1971
Phone (734) 655-2692

Hospital & facility affiliations

  • St Joe Mercy Hospital System Livonia Hospital, Livonia, MI, CCN 230002
  • University of Michigan Health System Hospital, Ann Arbor, MI, CCN 230046

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Nurse Practitioner

State licenses

LicenseStateTypeSpecialty
4704272452MIMDNurse Practitioner

Practice roles

OrganizationSpecialtyStatusNew patients
Iha Olma Specialty 1 LLC CurrentSince Dec 1, 2025 Accepting new patients
Iha Health Service Corporation CurrentSince Dec 1, 2025 Accepting new patients
Iha Health Services Corporation CurrentSince Dec 1, 2025 Accepting new patients
Regents of the University of Michigan CurrentSince Aug 26, 2023 Accepting new patients
Iha Olma Specialty 1 LLC Current Accepting new patients
Iha Health Services Corporation Current Accepting new patients
Regents of the University of Michigan Nurse Practitioner CurrentSince Aug 26, 2023 Accepting new patients
Iha Olma Specialty 1 LLC CurrentSince Dec 1, 2025 Accepting new patients
Iha Health Services Corporation Past Accepting new patients
Regents of the University of Michigan Past Accepting new patients

Locations

1500 E Medical Center Dr
Ann Arbor, MI 48109
Phone (734) 936-4280

3621 S State St
Ann Arbor, MI 48108
Phone (734) 647-5229

24 Frank Lloyd Wright Dr
Ann Arbor, MI 48105
Phone (734) 930-7400

14555 Levan Rd
Ste 311
Livonia, MI 48154
Phone (248) 858-3850

19000 St Joes Pkwy
Livonia, MI 48152
Phone (734) 655-8250

44428 Woodward Ave
Ste 102
Pontiac, MI 48341
Phone (734) 712-8700

5333 McAuley Dr
Rm 2115
Ypsilanti, MI 48197
Phone (734) 712-3971

5325 Elliott Dr
Ste 108
Ypsilanti, MI 48197

5301 McAuley Dr
Ypsilanti, MI 48197
Phone (734) 712-7246

Interoperability endpoints

  • Direct secure messaging: eblum1117904@direct.hfhs.org

Organizations & group practices 10

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.

Hospital & facility affiliations 2

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

NPI Registry JSON

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

{
    "created_epoch": "1379635200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1771891200000",
    "number": "1124454251",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "24 FRANK LLOYD WRIGHT DRIVE",
            "address_2": "SUITE J2000",
            "city": "ANN ARBOR",
            "state": "MI",
            "postal_code": "48105",
            "telephone_number": "734-747-6766",
            "fax_number": "734-222-3100"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "14555 LEVAN RD",
            "address_2": "SUITE 311",
            "city": "LIVONIA",
            "state": "MI",
            "postal_code": "48154",
            "telephone_number": "734-655-2692",
            "fax_number": "734-655-4218"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "5301 E Huron River Dr",
            "address_purpose": "LOCATION",
            "city": "Ypsilanti",
            "state": "MI",
            "postal_code": "481971051",
            "country_code": "US",
            "telephone_number": "734-712-3456",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "BLUM",
        "first_name": "ERICA",
        "middle_name": "KARIM",
        "name_prefix": "Mrs.",
        "credential": "NP",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2013-09-20",
        "last_updated": "2026-02-24",
        "certification_date": "2026-02-24",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LA2100X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Acute Care",
            "state": "MI",
            "license": "4704272452",
            "primary": false
        },
        {
            "code": "363L00000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner",
            "state": "MI",
            "license": "4704272452",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "ERICA",
            "last_name": "HAMMAR",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

Other providers in Livonia, MI

Sources for this page

Verify at the official NPI Registry.