Michael L Korthals, O.D.

Primary specialty

OptometristTaxonomy code 152W00000X

License

02146 Issued in IA

Practice address

422 S Pierce Ave
Mason City, IA 50401-2709

Phone

(641) 424-0780

Fax

(641) 424-2345

NPI assigned

Jul 10, 2006

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 1

Addresses

Other identifiers 6

Medicare fee-for-service enrollment

Enrolled in IA

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: No
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Specialty

Optometry

Education

Illinois College of Optometry at Chicago, 1999

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Practice addresses (Care Compare)

Merit-based Incentive Payment System (MIPS)

Final score

67.06 of 100Reported as individual

Quality

34.12

Improvement activities

40

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Practice roles

Locations

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.

• Clear Lake Optics Corp

  • Optometrist
  • Mason City, IA
  • NPI 1679767339
  Medicare reassignment NPD
• R.M. Heston OD PC

  • Optometrist
  • Mason City, IA
  • NPI 1740485572
  NPD (past)

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

{
    "created_epoch": "1152489600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1702512000000",
    "number": "1407880883",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "422 S PIERCE AVE STE 100A",
            "city": "MASON CITY",
            "state": "IA",
            "postal_code": "504012709",
            "telephone_number": "641-424-0780",
            "fax_number": "641-424-2345"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "422 S PIERCE AVE",
            "city": "MASON CITY",
            "state": "IA",
            "postal_code": "504012709",
            "telephone_number": "641-424-0780",
            "fax_number": "641-424-2345"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "KORTHALS",
        "first_name": "MICHAEL",
        "middle_name": "L",
        "credential": "O.D.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2006-07-10",
        "last_updated": "2023-12-14",
        "certification_date": "2023-12-14",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "152W00000X",
            "taxonomy_group": "",
            "desc": "Optometrist",
            "state": "IA",
            "license": "02146",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "DMERC",
            "identifier": "5178720001",
            "state": "IA"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "1204016",
            "state": "IA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "TRICARE",
            "identifier": "42149949950401",
            "state": "IA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "JOHN DEERE",
            "identifier": "IA0101",
            "state": "IA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BLUE CROSS & BLUE SHIELD",
            "identifier": "35096",
            "state": "IA"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "RR MEDICARE",
            "identifier": "P00135209",
            "state": "IA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Jared Arthur Knowles, PA-C
• Kathryn Marie Knudson, OTR/L
• Kathleen J Koch, RD, LD
• Patrick David Kolker, DDS
• Angela Dawn Konrad, DO
• Deborah Kreimeyer, OT
• Jill Kreimeyer, BA
• Rebeca Leigh Krogan, CADC, LMSW
• Steven S Krogh, MD
• Samantha Jo Krones, PA-C

• Optometrist in Mason City, IA
• Providers in Mason City, IA by specialty
• Optometrist in Iowa

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Dec 14, 2023; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.