Michelle Backus Colwell, M.D.

Primary specialty

Obstetrics & Gynecology PhysicianTaxonomy code 207V00000X

License

47016 Issued in WI

Practice address

100 Michigan St NE # Mc027
Grand Rapids, MI 49503-2560

Phone

(616) 391-2160

Fax

(616) 391-2683

NPI assigned

Aug 31, 2005

Last updated

Mar 17, 2026By the provider in NPPES

Sex

Female

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Other identifiers 2

Other names 1

• Michelle Backus-Walzer Former name

Electronic endpoints 2

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: Yes

Green means eligible to order or refer.

Enrollment records 1

Specialty

Obstetrics/Gynecology

Education

Michigan State University College of Human Medicine, 1996

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Spectrum Health HospitalsGroup PAC ID 8921904764, shared by 9 NPIs, 161 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Spectrum Health Hospital, Grand Rapids, MI, CCN 230038

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: mbackuswalzer7156@epic00.corewelldirect.org
• Direct secure messaging: michelle.backuswalzer@epic00.shdirect.org

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.

• Spectrum Health Hospitals

  dba Corewell Health Grand Rapids Hospitals

  • Hospitalist Physician
  • Grand Rapids, MI
  • NPI 1558407189

  Obstetrics & Gynecology

  Medicare reassignment NPD
• Spectrum Health Hospitals

  dba Corewell Health Grand Rapids Hospital

  • General Acute Care Hospital
  • Grand Rapids, MI
  • NPI 1922090554
  Medicare reassignment NPD
• Spectrum Health Primary Care Partners

  dba Corewell Health Medical Group West

  • Internal Medicine Physician
  • Grand Rapids, MI
  • NPI 1235188673

  Obstetrics & Gynecology

  Medicare reassignment NPD
• Spectrum Health Primary Care Partners

  dba Corewell Health Medical Group West

  • Internal Medicine Physician
  • Grand Rapids, MI
  • NPI 1689499667
  NPD

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

• Pennock Hospital

  dba Corewell Health Pennock Hospital

  • Critical Access Hospital
  • Hastings, MI
  • NPI 1932695525
  Care Compare affiliation
• Spectrum Health Hospitals

  dba Corewell Health Grand Rapids Hospital

  • General Acute Care Hospital
  • Grand Rapids, MI
  • NPI 1922090554
  Care Compare affiliation

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

{
    "created_epoch": "1125446400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1773705600000",
    "number": "1124011531",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "100 MICHIGAN ST NE",
            "address_2": "MC 845",
            "city": "GRAND RAPIDS",
            "state": "MI",
            "postal_code": "495032560",
            "telephone_number": "616-391-2967",
            "fax_number": "616-391-2683"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "100 MICHIGAN ST NE # MC027",
            "city": "GRAND RAPIDS",
            "state": "MI",
            "postal_code": "495032560",
            "telephone_number": "616-391-2160",
            "fax_number": "616-391-2683"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "BACKUS COLWELL",
        "first_name": "MICHELLE",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2005-08-31",
        "last_updated": "2026-03-17",
        "certification_date": "2026-03-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207V00000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology",
            "state": "WI",
            "license": "47016",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "34549100",
            "state": "WI"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "32666500",
            "state": "WI"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "Michelle.BackusWalzer@epic00.shdirect.org",
            "affiliation": "N",
            "address_1": "100 Michigan St NE # Mc027",
            "city": "Grand Rapids",
            "state": "MI",
            "country_code": "US",
            "postal_code": "495032560",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://epicarr02.spectrumhealth.org/EpicFHIR/api/FHIR/DSTU2/",
            "affiliation": "N",
            "address_1": "100 Michigan St NE # Mc027",
            "city": "Grand Rapids",
            "state": "MI",
            "country_code": "US",
            "postal_code": "495032560",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": [
        {
            "first_name": "MICHELLE",
            "last_name": "BACKUS-WALZER",
            "credential": "M.D.",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

• Kayla Bachman
• Jaime Bachmeier, LLMSW
• Rebecca Joy Back, LMSW
• Tori Lynn Back, CADC CCS
• Tammy Backensto
• Ashley Lynn Backus
• Lyndsey Baculi, LMSW
• Brittany Nicole Bade, DO
• Brooke Bader
• Sara Hilda Badger, LM, CPM

• Obstetrics & Gynecology Physician in Grand Rapids, MI
• Providers in Grand Rapids, MI by specialty
• Obstetrics & Gynecology Physician in Michigan

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 17, 2026; 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.