Individual provider Active NPI

William O Humphrey, M.D.

  • Anatomic Pathology & Clinical Pathology Physician
  • Rochester, MN
National Provider Identifier
1902245467
Registry record updated Oct 17, 2023
On this page

Key facts

NPPES NPI Registry
Primary specialty
Anatomic Pathology & Clinical Pathology PhysicianTaxonomy code 207ZP0102X
License
73425 Issued in MN
Practice address
200 1St St SW
Rochester, MN 55905-0001
Phone
(507) 284-2511
NPI assigned
Jun 18, 2013
Last updated
Oct 17, 2023By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Oct 17, 2023

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Family Medicine Physician 207Q00000X R-09913 IA
Internal Medicine Physician 207R00000X R-9841 IA
Anatomic Pathology & Clinical Pathology Physician 207ZP0102X 73425 MN Primary

Addresses

Primary practice location

200 1St St SW
Rochester, MN 55905-0001

Mailing address

200 1St St SW
Rochester, MN 55905-0001
Phone (507) 284-2511

Other practice location 1

1201 3rd Ave SE
Cedar Rapids, IA 52403-4009
Phone (319) 730-7300

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address whumphrey1950791@ehrdirect.mayoclinicmsg.org

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MN, MI2 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

Enrollment IDStateProvider typePAC IDDetails
I20230626000825 MN Practitioner - Pathology 9931343936 Reassigns benefits to 1 organization
I20250522002283 MI Practitioner - Pathology 9931343936 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Pathology
Education
University of Iowa, RJ & L Carver College of Medicine, 2013
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Michigan Pathology Specialists PCGroup PAC ID 4789576414, 31 clinicians

Practice addresses (Care Compare)

35 Michigan St NE
Spectrum Health Reg Laboratory
Grand Rapids, MI 49503-2514
Phone (616) 267-2350

Hospital & facility affiliations

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
R-09913IAMDFamily Medicine Physician
R-9841IAMDInternal Medicine Physician
73425MNMDAnatomic Pathology & Clinical Pathology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Michigan Pathology Specialists PC Anatomic Pathology & Clinical Pathology CurrentSince Jul 1, 2025 Accepting new patients
Mayo Clinic CurrentSince Jan 27, 2025 Accepting new patients

Locations

100 Michigan St NE
Grand Rapids, MI 49503
Phone (616) 391-1680

35 Michigan St NE
Grand Rapids, MI 49503
Phone (616) 267-2200

418 Washington St
Lakeview, MI 48850
Phone (989) 352-6474

200 1st St SW
Rochester, MN 55905
Phone (507) 266-4850

Interoperability endpoints

  • Direct secure messaging: whumphrey1950791@ehrdirect.mayoclinicmsg.org

Organizations & group practices 3

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 4

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": "1371513600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1697500800000",
    "number": "1902245467",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "200 1ST ST SW",
            "city": "ROCHESTER",
            "state": "MN",
            "postal_code": "559050001",
            "telephone_number": "507-284-2511"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "200 1ST ST SW",
            "city": "ROCHESTER",
            "state": "MN",
            "postal_code": "559050001",
            "telephone_number": "507-284-2511"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1201 3rd Ave SE",
            "address_purpose": "LOCATION",
            "city": "Cedar Rapids",
            "state": "IA",
            "postal_code": "524034009",
            "country_code": "US",
            "telephone_number": "319-730-7300",
            "fax_number": "319-730-7368",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "HUMPHREY",
        "first_name": "WILLIAM",
        "middle_name": "O",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2013-06-18",
        "last_updated": "2023-10-17",
        "certification_date": "2023-10-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "IA",
            "license": "R-09913",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "IA",
            "license": "R-9841",
            "primary": false
        },
        {
            "code": "207ZP0102X",
            "taxonomy_group": "",
            "desc": "Pathology, Anatomic Pathology & Clinical Pathology",
            "state": "MN",
            "license": "73425",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "whumphrey1950791@ehrdirect.mayoclinicmsg.org",
            "affiliation": "N",
            "address_1": "200 1st St SW",
            "city": "Rochester",
            "state": "MN",
            "country_code": "US",
            "postal_code": "559050001",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Rochester, MN

Sources for this page

Verify at the official NPI Registry.