Individual provider Active NPI

Ryan Michael Mackenzie, NP

  • Acute Care Nurse Practitioner
  • Ann Arbor, MI
National Provider Identifier
1891570453
Registry record updated Apr 15, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Acute Care Nurse PractitionerTaxonomy code 363LA2100X
License
4704268806 Issued in MI
Practice address
1500 E Medical Center Dr
Ann Arbor, MI 48109-5000
Phone
(734) 647-5299
NPI assigned
Aug 30, 2023
Last updated
Apr 15, 2025By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Apr 15, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Nurse Practitioner 363L00000X 4704268806 MI
Acute Care Nurse Practitioner 363LA2100X 4704268806 MI Primary

Addresses

Primary practice location

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

Mailing address

3621 S State St
Ann Arbor, MI 48108-1633
Phone (734) 647-5299

Other practice location 1

3647 Forest Spring Dr
Lake Orion, MI 48359-1590
Phone (248) 860-3190

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
I20231006000513 MI Practitioner - Nurse Practitioner 6204281538 Reassigns benefits to 4 organizations

Care Compare profile

Medicare Care Compare
Specialty
Nurse Practitioner
Education
Other, 2023
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Associates in Neurology PCGroup PAC ID 6406827260, 14 clinicians

Practice addresses (Care Compare)

27555 Middlebelt Rd
Farmingtn HLS, MI 48334-5011
Phone (248) 478-5512

Hospital & facility affiliations

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
Henry Ford Health System Nurse Practitioner CurrentSince Jul 29, 2024 Accepting new patients
Regents of the University of Michigan Nurse Practitioner CurrentSince Feb 27, 2025 Accepting new patients
University Physician Group CurrentSince Oct 2, 2023 Accepting new patients
Associates in Neurology, PC CurrentSince Aug 4, 2025 Accepting new patients
Henry Ford Health System CurrentSince Jul 29, 2024 Accepting new patients
Regents of the University of Michigan CurrentSince Feb 27, 2025 Accepting new patients
Henry Ford Maplegrove Center Past Accepting new patients
University Physician Group 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

2799 W Grand Blvd
Detroit, MI 48202
Phone (313) 876-2062

2799 W Grand Blvd
#363
Detroit, MI 48202
Phone (313) 916-2020

3990 John R St
Detroit, MI 48201
Phone (313) 745-6211

400 Mack Ave
Detroit, MI 48201
Phone (313) 448-9006

4100 John R St
Detroit, MI 48201
Phone (313) 576-8530

27555 Middlebelt Rd
Farmington Hills, MI 48334
Phone (248) 478-5512

46325 W Twelve Mile Rd
Ste 300
Novi, MI 48377
Phone (248) 735-0502

1560 E Maple Rd
Ste 200
Troy, MI 48083
Phone (248) 581-5200

Interoperability endpoints

  • Direct secure messaging: rmackenzie1038349@direct.hfhs.org

Organizations & group practices 8

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

Hospital & facility affiliations 1

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": "1693353600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1744675200000",
    "number": "1891570453",
    "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": "734-647-5299"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "3647 Forest Spring Dr",
            "address_purpose": "LOCATION",
            "city": "Lake Orion",
            "state": "MI",
            "postal_code": "483591590",
            "country_code": "US",
            "telephone_number": "248-860-3190",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MACKENZIE",
        "first_name": "RYAN",
        "middle_name": "MICHAEL",
        "credential": "NP",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2023-08-30",
        "last_updated": "2025-04-15",
        "certification_date": "2025-04-15",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363L00000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner",
            "state": "MI",
            "license": "4704268806",
            "primary": false
        },
        {
            "code": "363LA2100X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Acute Care",
            "state": "MI",
            "license": "4704268806",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Ann Arbor, MI

Sources for this page

Verify at the official NPI Registry.