David S Grenda, MD, PHD

Primary specialty

Anesthesiology PhysicianTaxonomy code 207L00000X

License

86153-20 Issued in WI

Practice address

1400 Bellinger Street
Eau Claire, WI 54703-5222

Phone

(715) 833-5222

NPI assigned

Jun 15, 2007

Sex

Male

Sole proprietor

No

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

Specialties & licenses 3

Addresses

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in GA, WI2 enrollments

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 2

Specialty

Anesthesiology

Education

Other, 2007

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Mayo Clinic Health System-Northwest Wisconsin Region IncGroup PAC ID 4385553627, 797 clinicians

Mayo Clinic Health System-Southwest Wisconsin Region IncGroup PAC ID 0345152443, 539 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Mayo Clinic Health System Eau Claire Hospital Hospital, Eau Claire, WI, CCN 520070
• Mayo Clinic Health System-Franciscan Medical Center Inc Hospital, La Crosse, WI, CCN 520004

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine, Doctor of Philosophy

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: dgrenda2553884@ehrdirect.mayoclinicmsg.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.

• Mayo Clinic Health System-Northwest Wisconsin Region, Inc.

  • Multi-Specialty Clinic/Center
  • Eau Claire, WI
  • NPI 1235588831
  Medicare reassignment Care Compare group NPD
• Mayo Clinic Health System-Southwest Wisconsin Region, Inc.

  • Multi-Specialty Clinic/Center
  • La Crosse, WI
  • NPI 1629056049
  Medicare reassignment Care Compare group
• American Anesthesiology Associates of Georgia, LLC

  • Anesthesiology Physician
  • Stone Mountain, GA
  • NPI 1528068673
  Medicare reassignment NPD
• Gwinnett Physician Group, LLC

  • Internal Medicine Physician
  • Lawrenceville, GA
  • NPI 1578574661
  Medicare reassignment NPD
• Piedmont Anesthesia Associates, L.L.C

  • Anesthesiology Physician
  • Atlanta, GA
  • NPI 1407856594
  Medicare reassignment NPD
• Piedmont Anesthesia LLC

  • Anesthesiology Physician
  • Stockbridge, GA
  • NPI 1700474244
  Medicare reassignment NPD
• Piedmont Cardiology of Atlanta, LLC

  • Cardiovascular Disease Physician
  • Atlanta, GA
  • NPI 1275729691
  Medicare reassignment NPD
• Piedmont Specialty Hospital Billing LLC

  • Internal Medicine Physician
  • Jasper, GA
  • NPI 1699290510
  Medicare reassignment NPD
• Northside Primary Care Professional Services,LLC

  • Family Medicine Physician
  • Atlanta, GA
  • NPI 1922397553
  Medicare reassignment
• Mayo Clinic Health System-Northwest Wisconsin Region, Inc.

  • Multi-Specialty Clinic/Center
  • Osseo, WI
  • NPI 1083140990
  NPD
• Mayo Clinic Health System-Northwest Wisconsin Region, Inc.

  • Rural Health Clinic/Center
  • Mondovi, WI
  • NPI 1174116669
  NPD
• Mayo Clinic Health System-Southwest Wisconsin Region, Inc.

  • Multi-Specialty Clinic/Center
  • La Crosse, WI
  • NPI 1942980917
  NPD

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

• Mayo Clinic Health System-Northwest Wisconsin Region, Inc.

  • General Acute Care Hospital
  • Eau Claire, WI
  • NPI 1629027578
  Care Compare affiliation
• Mayo Clinic Health System-Southwest Wisconsin Region, Inc.

  • General Acute Care Hospital
  • La Crosse, WI
  • NPI 1801874227
  Care Compare affiliation

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

{
    "created_epoch": "1181865600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757030400000",
    "number": "1336344928",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 860912",
            "address_2": "PROVIDER ENROLLMENT",
            "city": "MINNEAPOLIS",
            "state": "MN",
            "postal_code": "554860912",
            "telephone_number": "507-284-2511"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1400 BELLINGER STREET",
            "city": "EAU CLAIRE",
            "state": "WI",
            "postal_code": "547035222",
            "telephone_number": "715-833-5222"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1800 Howell Mill Rd NW",
            "address_purpose": "LOCATION",
            "city": "Atlanta",
            "state": "GA",
            "postal_code": "303182538",
            "country_code": "US",
            "telephone_number": "404-351-1745",
            "fax_number": "404-351-7121",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "GRENDA",
        "first_name": "DAVID",
        "middle_name": "S",
        "credential": "MD, PHD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-06-15",
        "last_updated": "2025-09-05",
        "certification_date": "2025-09-05",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "GA",
            "license": "69909",
            "primary": false
        },
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "WI",
            "license": "86153-20",
            "primary": true
        },
        {
            "code": "207LC0200X",
            "taxonomy_group": "",
            "desc": "Anesthesiology, Critical Care Medicine",
            "state": "GA",
            "license": "69909",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "dgrenda2553884@ehrdirect.mayoclinicmsg.org",
            "affiliation": "N",
            "address_1": "1400 Bellinger Street",
            "city": "EAU CLAIRE",
            "state": "WI",
            "country_code": "US",
            "postal_code": "547035222",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Marcus Greatens, MD
• Paul William Green, MD
• Paul F Greene, P.T.
• Miles Greenlee
• Emily Robinson Greenwood
• Bradley Kent Grewe, MD
• Suzanne Grey
• Lillian Griffin
• Michael Griffith, PTA
• Carla Griggs, APNP

• Anesthesiology Physician in Eau Claire, WI
• Providers in Eau Claire, WI by specialty
• Anesthesiology Physician in Wisconsin

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 5, 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.