Individual provider Active NPI

Mark Knapp, MD

  • Hematology & Oncology Physician
  • Columbus, OH
National Provider Identifier
1952359549
Registry record updated Jan 11, 2023
On this page

Key facts

NPPES NPI Registry
Primary specialty
Hematology & Oncology PhysicianTaxonomy code 207RH0003X
License
35078040 Issued in OH
Practice address
3100 Plaza Properties Blvd
Columbus, OH 43219-1530
Phone
(614) 383-6000
Fax
(614) 383-6001
NPI assigned
May 5, 2006
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jan 11, 2023

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Medical Oncology Physician 207RX0202X 35078040 OH
Hematology & Oncology Physician 207RH0003X 35078040 OH Primary

Addresses

Primary practice location

3100 Plaza Properties Blvd
Columbus, OH 43219-1530

Mailing address

PO Box 749495
Atlanta, GA 30374-9495
Phone (239) 432-8331

Other identifiers 3

IdentifierTypeStateIssuer
000000302025OtherOHANTHEM BC/BS
2430051MedicaidOH
3600985OtherOHUNITED HEALTHCARE

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in OH
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

Enrollment IDStateProvider typePAC IDDetails
I20040519000639 OH Practitioner - Hematology/OncologyPractitioner - Medical Oncology 0345231312 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Hematology/OncologyAlso: Medical Oncology
Education
University of Cincinnati College of Medicine, 1997
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
American Oncology Partners PAGroup PAC ID 0042569758, 377 clinicians

Practice addresses (Care Compare)

3100 Plaza Properties Blvd
Columbus, OH 43219-1530
Phone (614) 383-6000

Hospital & facility affiliations

  • Mount Carmel East & West Hospital, Columbus, OH, CCN 360035
  • Mount Carmel St Ann'S Hospital, Westerville, OH, CCN 360012

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
35078040OHMDMedical Oncology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Mount Carmel Health System CurrentSince Sep 25, 2025 Accepting new patients
American Oncology Partners PA Hematology & Oncology CurrentSince Jan 1, 2019 Accepting new patients
Mount Carmel Health System CurrentSince Sep 25, 2025 Accepting new patients
Mount Carmel Health Past Accepting new patients
Mid Ohio Oncology Hematology Inc Past Accepting new patients

Locations

9160 Forum Corporate Pkwy
Ste 350
Fort Myers, FL 33905
Phone (239) 785-3200

3100 Plaza Properties Blvd
Columbus, OH 43219
Phone (614) 383-6000

5300 N Meadows Dr
Ste 1900
Grove City, OH 43123
Phone (614) 663-2450

5500 N Meadows Dr
Ste 220
Grove City, OH 43123
Phone (614) 259-0920

477 Cooper Rd
Ste 300
Westerville, OH 43081
Phone (614) 898-8808

Interoperability endpoints

  • Direct secure messaging: mknapp@zangcenter.direct.varian.com
  • Direct secure messaging: mknapp1158290@direct.trinity-health.org

Organizations & group practices 5

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.

Hospital & facility affiliations 3

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": "1146787200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1673395200000",
    "number": "1952359549",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 749495",
            "city": "ATLANTA",
            "state": "GA",
            "postal_code": "303749495",
            "telephone_number": "239-432-8331",
            "fax_number": "813-321-1296"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3100 PLAZA PROPERTIES BLVD",
            "city": "COLUMBUS",
            "state": "OH",
            "postal_code": "432191530",
            "telephone_number": "614-383-6000",
            "fax_number": "614-383-6001"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "KNAPP",
        "first_name": "MARK",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-05-05",
        "last_updated": "2023-01-11",
        "certification_date": "2023-01-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RX0202X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Medical Oncology",
            "state": "OH",
            "license": "35078040",
            "primary": false
        },
        {
            "code": "207RH0003X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology & Oncology",
            "state": "OH",
            "license": "35078040",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "ANTHEM BC/BS",
            "identifier": "000000302025",
            "state": "OH"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "2430051",
            "state": "OH"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "UNITED HEALTHCARE",
            "identifier": "3600985",
            "state": "OH"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Columbus, OH

Sources for this page

Verify at the official NPI Registry.