NPIMap

Individual provider Active NPI

Mitchell Onken, M.D.

  • Vascular Neurology Physician
  • Iowa City, IA
National Provider Identifier
1427444538
Registry record updated Aug 19, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Vascular Neurology PhysicianTaxonomy code 2084V0102X
License
MD-57357 Issued in IA
Practice address
200 Hawkins Dr
Iowa City, IA 52242-1009
Phone
(319) 356-2952
Fax
(319) 356-4505
NPI assigned
Apr 15, 2015
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Aug 19, 2026

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

Specialties & licenses 4

Specialty (taxonomy)CodeLicenseStatePrimary
Vascular Neurology Physician 2084V0102X MD-57357 IA Primary
Vascular Neurology Physician 2084V0102X MD470451 PA
Neurology Physician 2084N0400X MD-57357 IA
Neurology Physician 2084N0400X MD470451 PA

Addresses

Primary practice location

200 Hawkins Dr
Iowa City, IA 52242-1009

Mailing address

200 Hawkins Dr
Iowa City, IA 52242-1009
Phone (319) 356-2952

Medicare participation

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

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20200730003089 PA Practitioner - Neurology 9931452331 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Neurology
Education
Other, 2015
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

Practice addresses (Care Compare)

100 N Academy Ave
Danville, PA 17822-9800
Phone (570) 271-6541

Hospital & facility affiliations

  • Geisinger Medical Center Hospital, Danville, PA, CCN 390006
  • Geisinger Wyoming Valley Medical Center Hospital, Wilkes Barre, PA, CCN 390270
  • Geisinger-Community Medical Center Hospital, Scranton, PA, CCN 390001
  • Geisinger-Bloomsburg Hospital Hospital, Bloomsburg, PA, CCN 390003
  • Upmc Williamsport Hospital, Williamsport, PA, CCN 390045

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
Geisinger Clinic CurrentSince Jul 20, 2020 Accepting new patients
Evangelical Medical Services Organization Neurology CurrentSince Jan 20, 2021 Accepting new patients
Evangelical Medical Services Organization CurrentSince Jan 20, 2021 Accepting new patients
Geisinger Clinic Current Accepting new patients
Geisinger Clinic CurrentSince Jul 20, 2020 Accepting new patients
Geisinger Medical Center Past Accepting new patients

Locations

100 N Academy Ave
Danville, PA 17822

25 Lystra Rogers Dr
Lewisburg, PA 17837
Phone (570) 523-3290

3 Hospital Dr
Ste 206
Lewisburg, PA 17837
Phone (570) 522-9771

Interoperability endpoints

  • Direct secure messaging: monken489646@wellspan.direct-ci.com

Organizations & group practices 6

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 65

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

View all 65

NPI Registry JSON

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

{
    "created_epoch": "1429056000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1787097600000",
    "number": "1427444538",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "200 HAWKINS DR",
            "city": "IOWA CITY",
            "state": "IA",
            "postal_code": "522421009",
            "telephone_number": "319-356-2952",
            "fax_number": "319-356-4505"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "200 HAWKINS DR",
            "city": "IOWA CITY",
            "state": "IA",
            "postal_code": "522421009",
            "telephone_number": "319-356-2952",
            "fax_number": "319-356-4505"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "ONKEN",
        "first_name": "MITCHELL",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2015-04-15",
        "last_updated": "2026-08-19",
        "certification_date": "2026-08-19",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2084V0102X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Vascular Neurology",
            "state": "IA",
            "license": "MD-57357",
            "primary": true
        },
        {
            "code": "2084V0102X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Vascular Neurology",
            "state": "PA",
            "license": "MD470451",
            "primary": false
        },
        {
            "code": "2084N0400X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Neurology",
            "state": "IA",
            "license": "MD-57357",
            "primary": false
        },
        {
            "code": "2084N0400X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Neurology",
            "state": "PA",
            "license": "MD470451",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Iowa City, IA

Sources for this page

Verify at the official NPI Registry.