NPIMap

Individual provider Active NPI

Kenneth A Krajewski, M.D.

  • Hematology & Oncology Physician
  • Grand Rapids, MI
National Provider Identifier
1154585172
Registry record updated Feb 26, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Hematology & Oncology PhysicianTaxonomy code 207RH0003X
License
4301104456 Issued in MI
Practice address
1534 Groton Rd SE
Grand Rapids, MI 49506-4754
Phone
(616) 685-5600
NPI assigned
Jul 18, 2008
Last updated
Feb 26, 2025By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Feb 26, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Hematology & Oncology Physician 207RH0003X MD474077 PA
Hematology & Oncology Physician 207RH0003X 4301104456 MI Primary

Addresses

Primary practice location

1534 Groton Rd SE
Grand Rapids, MI 49506-4754

Mailing address

1534 Groton Rd SE
Grand Rapids, MI 49506-4754

Other practice location 1

100 N academy Ave
Danville, PA 17822-9800
Phone (570) 271-6045

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MI, PA2 enrollments
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 2

Enrollment IDStateProvider typePAC IDDetails
I20140721000223 MI Practitioner - Hematology/Oncology 6002045598 Reassigns benefits to 2 organizations
I20211122001961 PA Practitioner - Hematology/OncologyPractitioner - Medical Oncology 6002045598 Reassigns benefits to 3 organizations

Care Compare profile

Medicare Care Compare
Specialty
Hematology/OncologyAlso: Medical Oncology
Education
University of Louisville School of Medicine, 2008
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Geisinger ClinicGroup PAC ID 5395657001, 3,432 clinicians
Mymichigan Medical Center SaultGroup PAC ID 7315936481, 101 clinicians
Guthrie Medical Group PCGroup PAC ID 6002728656, 795 clinicians

Practice addresses (Care Compare)

100 N Academy Ave
Danville, PA 17822-9800
Phone (570) 271-6211

146 E Spruce St
Sault Sainte Marie, MI 49783-1822
Phone (906) 253-0113

1534 Groton Rd SE
Grand Rapids, MI 49506-4754
Phone (570) 888-5858

500 Osborn Blvd
Sault S Marie, MI 49783-1822

509 Osborn Blvd
Sault Sainte Marie, MI 49783-2069
Phone (906) 635-4401

509 Osborn Blvd
Sault Sainte Marie, MI 49783-2071

Hospital & facility affiliations

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
Geisinger-HM Joint Venture, LLC CurrentSince Feb 24, 2025 Accepting new patients
Susquehanna Physician Services CurrentSince Nov 22, 2021 Accepting new patients
Geisinger-HM Joint Venture, LLC Current Accepting new patients
Guthrie Medical Group, P.C. Hematology & Oncology CurrentSince Aug 1, 2022 Accepting new patients
Geisinger Clinic CurrentSince Feb 24, 2025 Accepting new patients
Geisinger Clinic Current Accepting new patients
Mymichigan Medical Center Sault Current Accepting new patients
Geisinger Clinic CurrentSince Feb 24, 2025 Accepting new patients
Susquehanna Physician Services Hematology & Oncology CurrentSince Nov 22, 2021 Accepting new patients
Spectrum Health Hospitals Past Accepting new patients

Locations

4000 Wellness Dr
Midland, MI 48670
Phone (844) 832-1956

500 Osborn Blvd
Sault South Marie, MI 49783
Phone (906) 635-4350

100 N Academy Ave
Danville, PA 17822

10 Choate Cir
Montoursville, PA 17754
Phone (570) 368-5566

255 Route 220 Hwy
Muncy, PA 17756
Phone (570) 308-2600

1100 Grampian Blvd
Williamsport, PA 17701
Phone (570) 326-8005

1201 Grampian Blvd
Williamsport, PA 17701
Phone (570) 326-8723

700 High St
Williamsport, PA 17701
Phone (570) 321-2000

Interoperability endpoints

  • Direct secure messaging: kkrajewski179809@direct-guthrie.org
  • Direct secure messaging: kkrajewski91754@mymichiganhealth.midirect.net

Organizations & group practices 11

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 38

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

View all 38

NPI Registry JSON

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

{
    "created_epoch": "1216339200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1740528000000",
    "number": "1154585172",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1534 GROTON RD SE",
            "city": "GRAND RAPIDS",
            "state": "MI",
            "postal_code": "495064754"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1534 GROTON RD SE",
            "city": "GRAND RAPIDS",
            "state": "MI",
            "postal_code": "495064754",
            "telephone_number": "616-685-5600"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "100 N academy Ave",
            "address_purpose": "LOCATION",
            "city": "Danville",
            "state": "PA",
            "postal_code": "178229800",
            "country_code": "US",
            "telephone_number": "570-271-6045",
            "fax_number": "570-271-6542",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "KRAJEWSKI",
        "first_name": "KENNETH",
        "middle_name": "A",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2008-07-18",
        "last_updated": "2025-02-26",
        "certification_date": "2025-02-26",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RH0003X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology & Oncology",
            "state": "PA",
            "license": "MD474077",
            "primary": false
        },
        {
            "code": "207RH0003X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology & Oncology",
            "state": "MI",
            "license": "4301104456",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Grand Rapids, MI

Sources for this page

Verify at the official NPI Registry.