Allison Blumenfeld, MD

Primary specialty

Surgical Critical Care PhysicianTaxonomy code 2086S0102X

License

4301514454 Issued in MI

Practice address

221 Michigan St NE Ste 400
Grand Rapids, MI 49503-2538

Phone

(616) 732-6200

NPI assigned

Apr 13, 2020

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

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

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

{
    "created_epoch": "1586736000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1770681600000",
    "number": "1306465026",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "221 MICHIGAN ST NE STE 400",
            "city": "GRAND RAPIDS",
            "state": "MI",
            "postal_code": "495032538",
            "telephone_number": "616-486-9600",
            "fax_number": "616-486-9601"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "221 MICHIGAN ST NE STE 400",
            "city": "GRAND RAPIDS",
            "state": "MI",
            "postal_code": "495032538",
            "telephone_number": "616-732-6200"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "Uw Hospital & Clinics 600 Highland Ave",
            "address_purpose": "LOCATION",
            "city": "Madison",
            "state": "WI",
            "postal_code": "537920001",
            "country_code": "US",
            "telephone_number": "608-263-6400",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "BLUMENFELD",
        "first_name": "ALLISON",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2020-04-13",
        "last_updated": "2026-02-10",
        "certification_date": "2026-02-10",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2086S0102X",
            "taxonomy_group": "",
            "desc": "Surgery, Surgical Critical Care",
            "state": "MI",
            "license": "4301514454",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

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• Surgical Critical Care Physician in Grand Rapids, MI
• Providers in Grand Rapids, MI by specialty
• Surgical Critical Care Physician in Michigan

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 10, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.