Ann Katherine Williams MD, M.D.

Primary specialty

Ophthalmology PhysicianTaxonomy code 207W00000X

License

01039204A Issued in IN

Practice address

6850 Hohman Ave
Hammond, IN 46324-1410

Phone

(219) 931-7509

NPI assigned

Jun 27, 2005

Sex

Female

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Other identifiers 1

Medicare fee-for-service enrollment

Enrolled in IN

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

Specialty

Ophthalmology

Education

Northwestern University Feinberg Medical School, 1983

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Williams Eye Institute PCGroup PAC ID 2860386406, 7 clinicians

Practice addresses (Care Compare)

Merit-based Incentive Payment System (MIPS)

Final score

93.29 of 100Reported as group

Quality

100

Improvement activities

40

Cost

77.63

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: awilliams@williamseye.emadirect.md

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.

• Williams Eye Institute, PC

  • Ophthalmology Physician
  • Hammond, IN
  • NPI 1497761845
  Medicare reassignment Care Compare group NPD
• Williams Eye Institute, PC

  • Ophthalmology Physician
  • Crown Point, IN
  • NPI 1528778131
  NPD
• Novamed Surgery Center of Merrillville, LLC

  • Ambulatory Surgical Clinic/Center
  • Crown Point, IN
  • NPI 1609874254
  NPD (past)

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

{
    "created_epoch": "1119830400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1741219200000",
    "number": "1043216732",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "6850 HOHMAN AVENUE",
            "city": "HAMMOND",
            "state": "IN",
            "postal_code": "463241410",
            "telephone_number": "219-931-7509"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "6850 HOHMAN AVE",
            "city": "HAMMOND",
            "state": "IN",
            "postal_code": "463241410",
            "telephone_number": "219-931-7509"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "9797 Massachusetts St",
            "address_purpose": "LOCATION",
            "city": "Crown Point",
            "state": "IN",
            "postal_code": "463070278",
            "country_code": "US",
            "telephone_number": "219-649-2704",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "6836 Hohman Ave",
            "address_purpose": "LOCATION",
            "city": "Hammond",
            "state": "IN",
            "postal_code": "463241410",
            "country_code": "US",
            "telephone_number": "219-937-5063",
            "fax_number": "219-937-5068",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "WILLIAMS MD",
        "first_name": "ANN",
        "middle_name": "KATHERINE",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2005-06-27",
        "last_updated": "2025-03-06",
        "certification_date": "2025-03-06",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207W00000X",
            "taxonomy_group": "",
            "desc": "Ophthalmology",
            "state": "IL",
            "license": "036068962",
            "primary": false
        },
        {
            "code": "207W00000X",
            "taxonomy_group": "",
            "desc": "Ophthalmology",
            "state": "IN",
            "license": "01039204A",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "100465760",
            "state": "IN"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Sheena Wilkins, FNP
• Anthony D Wilko, DO
• Williams Eye Institute, PC
• Williams Eye Institute, PC
• Williams Eye Institute, PC
• Blake Williams, M.D.
• Danielle Williams
• Jennifer Williams
• Lekeisha Williams, PHARMD
• Tanesha Marnise Williams

• Ophthalmology Physician in Hammond, IN
• Providers in Hammond, IN by specialty
• Ophthalmology Physician in Indiana

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 6, 2025; 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.