NPIMap

Individual provider Active NPI

Ronald Benjamin Collins Jr., M.D.

  • Internal Medicine Physician
  • Oskaloosa, IA
National Provider Identifier
1851592018
Registry record updated Jan 28, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
39422 Issued in IA
Practice address
1229 C Ave E
Oskaloosa, IA 52577-4298
Phone
(641) 672-3394
NPI assigned
May 29, 2007
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jan 28, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X 39422 IA Primary
Internal Medicine Physician 207R00000X 125050346 IL

Addresses

Primary practice location

1229 C Ave E
Oskaloosa, IA 52577-4298

Mailing address

1229 C Ave E
Oskaloosa, IA 52577-4298
Phone (641) 672-3394

Other practice location 1

210 4th Ave
Grinnell, IA 50112-1898
Phone (641) 236-2382

Other identifiers 6

IdentifierTypeStateIssuer
CA4079OtherILRR MEDICARE GROUP PTAN
036119753MedicaidIL
809840OtherILMEDICARE GROUP PTAN
P00617107OtherILRR MEDICARE MEMBER PTAN
1669420501MedicaidIA
I17380OtherIAMEDICARE PTAN

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in IA
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
I20110414000656 IA Practitioner - Internal Medicine 6608947742 Reassigns benefits to 3 organizations

Care Compare profile

Medicare Care Compare
Specialty
Internal Medicine
Education
Other, 2004
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Mahaska County HospitalGroup PAC ID 2769388677, 128 clinicians
Grinnell Regional Medical CenterGroup PAC ID 0446153662, 98 clinicians

Practice addresses (Care Compare)

1229 C Ave E
Mahaska Health
Oskaloosa, IA 52577-4298
Phone (641) 672-3100

202 4TH Ave
FL 2
Grinnell, IA 50112-1898
Phone (641) 236-2925

210 4TH Ave
Grinnell, IA 50112-1898
Phone (641) 236-7511

Hospital & facility affiliations

  • Grinnell Regional Medical Center Hospital, Grinnell, IA, CCN 160147
  • Mahaska Health Partnership Hospital, Oskaloosa, IA, CCN 161379
  • Mahaska Health Partnership Nursing home, CCN 16Z379

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
39422IAMDInternal Medicine Physician
125050346ILMDInternal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Grinnell Regional Medical Center Internal Medicine CurrentSince Apr 1, 2011 Accepting new patients
St Luke'S Methodist Hospital Current Accepting new patients
Mahaska County Hospital CurrentSince Feb 16, 2026 Accepting new patients
Grinnell Regional Medical Center CurrentSince Apr 1, 2011 Accepting new patients
Grinnell Regional Medical Center Past Accepting new patients
Michael J Rosenfeld Past Accepting new patients

Locations

210 4th Ave
Fl 3
Grinnell, IA 50112
Phone (641) 236-2905

210 4th Ave
Grinnell, IA 50112
Phone (641) 236-2055

1229 C Ave E
Oskaloosa, IA 52577
Phone (641) 672-3100

Interoperability endpoints

  • Direct secure messaging: rcollins672024@direct.unitypoint.org
  • Direct secure messaging: ronaldcollins@grmc.allscriptsdirect.net

Organizations & group practices 15

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.

View all 15

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": "1180396800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1769558400000",
    "number": "1851592018",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1229 C AVE E",
            "city": "OSKALOOSA",
            "state": "IA",
            "postal_code": "525774298",
            "telephone_number": "641-672-3394",
            "fax_number": "641-672-3336"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1229 C AVE E",
            "city": "OSKALOOSA",
            "state": "IA",
            "postal_code": "525774298",
            "telephone_number": "641-672-3394"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "210 4th Ave",
            "address_purpose": "LOCATION",
            "city": "Grinnell",
            "state": "IA",
            "postal_code": "501121898",
            "country_code": "US",
            "telephone_number": "641-236-2382",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "COLLINS",
        "first_name": "RONALD",
        "middle_name": "BENJAMIN",
        "name_prefix": "Dr.",
        "name_suffix": "Jr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-05-29",
        "last_updated": "2026-01-28",
        "certification_date": "2026-01-28",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "IA",
            "license": "39422",
            "primary": true
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "IL",
            "license": "125050346",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "RR MEDICARE GROUP PTAN",
            "identifier": "CA4079",
            "state": "IL"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "036119753",
            "state": "IL"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MEDICARE GROUP PTAN",
            "identifier": "809840",
            "state": "IL"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "RR MEDICARE MEMBER PTAN",
            "identifier": "P00617107",
            "state": "IL"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "1669420501",
            "state": "IA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MEDICARE PTAN",
            "identifier": "I17380",
            "state": "IA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Oskaloosa, IA

Sources for this page

Verify at the official NPI Registry.