Infectious Disease Specialists PC

Primary specialty

Infectious Disease PhysicianTaxonomy code 207RI0200X

Legal business name

INFECTIOUS DISEASE SPECIALISTS PC

Practice address

200 E 86TH PL
Merrillville, IN 46410-6258

Phone

(219) 972-1547

Fax

(219) 972-1651

NPI assigned

Dec 29, 2005

Last updated

Jul 31, 2025By the provider in NPPES

Organization subpart

No

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

Authorized official

Name

Thomas K. Sleweon, MDNPI 1114909769

Title

MD/President

Phone

(219) 972-1547

Specialties & licenses 1

Addresses

Other identifiers 2

Medicare fee-for-service enrollment

Enrolled in IN

Enrollment records 1

Locations

Practitioners 18

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.

• Thomas K. Sleweon, M.D.

  • Infectious Disease Physician
  • Highland, IN
  • NPI 1114909769
  Medicare reassignment Care Compare group NPD Authorized official
• Siju T Chacko, M.D.

  • Infectious Disease Physician
  • Merrillville, IN
  • NPI 1720017262
  Medicare reassignment Care Compare group NPD
• Amanda Chambers, NP

  • Nurse Practitioner
  • Valparaiso, IN
  • NPI 1760071815
  Medicare reassignment Care Compare group NPD
• Oliver Pimentel Diamante, M.D

  • Infectious Disease Physician
  • Valparaiso, IN
  • NPI 1669781050
  Medicare reassignment Care Compare group NPD
• Kelly Renee Hardesty, NP

  • Family Nurse Practitioner
  • Kouts, IN
  • NPI 1265957971
  Medicare reassignment Care Compare group NPD
• Tonya A. Harvey, NP

  • Family Nurse Practitioner
  • Gary, IN
  • NPI 1528392156
  Medicare reassignment Care Compare group NPD
• Candace Kapranos, FNP-C

  • Primary Care Nurse Practitioner
  • Gary, IN
  • NPI 1285265686
  Medicare reassignment Care Compare group NPD
• Kimberly K. Oppman

  • Family Nurse Practitioner
  • Highland, IN
  • NPI 1265507487
  Medicare reassignment Care Compare group NPD
• Michael Alan Polich, N.P.

  • Family Nurse Practitioner
  • Dyer, IN
  • NPI 1871675637
  Medicare reassignment Care Compare group NPD
• Ralph Villaran, M.D.

  • Infectious Disease Physician
  • Highland, IN
  • NPI 1699858985
  Medicare reassignment Care Compare group NPD
• Erika Young, D.O.

  • Infectious Disease Physician
  • Valparaiso, IN
  • NPI 1750363206
  Medicare reassignment Care Compare group NPD
• Kelechi Nwabara, MD

  • Infectious Disease Physician
  • Maywood, IL
  • NPI 1144846254

  IN

  Medicare reassignment Care Compare group NPD

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

{
    "created_epoch": "1135814400000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1753920000000",
    "number": "1245217215",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 10667",
            "city": "MERRILLVILLE",
            "state": "IN",
            "postal_code": "464110667",
            "telephone_number": "219-738-6726",
            "fax_number": "219-738-6716"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "200 E 86TH PL",
            "city": "MERRILLVILLE",
            "state": "IN",
            "postal_code": "464106258",
            "telephone_number": "219-972-1547",
            "fax_number": "219-972-1651"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "INFECTIOUS DISEASE SPECIALISTS PC",
        "organizational_subpart": "NO",
        "enumeration_date": "2005-12-29",
        "last_updated": "2025-07-31",
        "status": "A",
        "authorized_official_last_name": "SLEWEON",
        "authorized_official_first_name": "THOMAS",
        "authorized_official_middle_name": "K.",
        "authorized_official_title_or_position": "MD/PRESIDENT",
        "authorized_official_telephone_number": "219-972-1547",
        "authorized_official_credential": "MD"
    },
    "taxonomies": [
        {
            "code": "207RI0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Infectious Disease",
            "state": "IN",
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "200307990",
            "state": "IN"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "300069075",
            "state": "IN"
        }
    ],
    "endpoints": [],
    "other_names": []
}

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• Infectious Disease Physician in Merrillville, IN
• Providers in Merrillville, IN by specialty
• Infectious Disease Physician in Indiana

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 31, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.