Individual provider Active NPI

Osama Nasim Ahsan, DO

  • Hospitalist Physician
  • Rapid City, SD
National Provider Identifier
1043903891
Registry record updated Jul 15, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Hospitalist PhysicianTaxonomy code 208M00000X
License
18675 Issued in SD
Practice address
353 Fairmont Blvd
Rapid City, SD 57701-7375
Phone
(605) 755-1000
NPI assigned
May 30, 2023
Last updated
Jul 15, 2026By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 15, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Hospitalist Physician 208M00000X 18675 SD Primary

Addresses

Primary practice location

353 Fairmont Blvd
Rapid City, SD 57701-7375

Mailing address

180 Harvester Dr Ste 110
Burr Ridge, IL 60527-6686
Phone (773) 702-1150

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in IL
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
I20230707002464 IL Order and Referring Only - Internal MedicinePractitioner - Internal Medicine 8527427640

National Provider Directory

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

NPI Registry JSON

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

{
    "created_epoch": "1685404800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1784073600000",
    "number": "1043903891",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "180 HARVESTER DR STE 110",
            "city": "BURR RIDGE",
            "state": "IL",
            "postal_code": "605276686",
            "telephone_number": "773-702-1150"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "353 FAIRMONT BLVD",
            "city": "RAPID CITY",
            "state": "SD",
            "postal_code": "577017375",
            "telephone_number": "605-755-1000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "AHSAN",
        "first_name": "OSAMA",
        "middle_name": "NASIM",
        "credential": "DO",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2023-05-30",
        "last_updated": "2026-07-15",
        "certification_date": "2026-07-15",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "SD",
            "license": "18675",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Rapid City, SD

Sources for this page

Verify at the official NPI Registry.