Dr Mary Tilak PC

Primary specialty

Obesity Medicine (Internal Medicine) PhysicianTaxonomy code 207RB0002X

Legal business name

DR MARY TILAK PC

Practice address

9410 Calumet Ave Ste 101
Munster, IN 46321-2812

Phone

(219) 922-8051

Fax

(219) 922-8608

NPI assigned

Nov 7, 2007

Last updated

Apr 24, 2026By 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

Mary N. Tilak, M.D.NPI 1518054352

Title

President

Phone

(219) 922-8051

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in IN

Enrollment records 1

These CMS records do not include an NPI. They are shown because their name and street address match this provider’s.

CLIA laboratory certificates

Locations

Practitioners 25

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.

• Mary N Tilak, MD

  • Internal Medicine Physician
  • Munster, IN
  • NPI 1518054352
  Medicare reassignment Care Compare group NPD Authorized official
• Cheryl L Anthony Worix, MD

  • Internal Medicine Physician
  • Dyer, IN
  • NPI 1528028693
  Medicare reassignment Care Compare group NPD
• Agnes Errihani, NP

  • Nurse Practitioner
  • Munster, IN
  • NPI 1619574084
  Medicare reassignment Care Compare group NPD
• Konstantina Gardikiotes, NP

  • Family Nurse Practitioner
  • Munster, IN
  • NPI 1013765056
  Medicare reassignment Care Compare group NPD
• Gagandeep Kaur, M.D.

  • Family Medicine Physician
  • Hammond, IN
  • NPI 1033564422
  Medicare reassignment Care Compare group NPD
• Melyn Joy Mabunay, FNP-BC

  • Family Nurse Practitioner
  • Munster, IN
  • NPI 1659261279
  Medicare reassignment Care Compare group NPD
• Joanne Niere-Ramos, M.D.

  • Geriatric Medicine (Family Medicine) Physician
  • Crown Point, IN
  • NPI 1851702229
  Medicare reassignment Care Compare group NPD
• Jonathan Ramos

  • Family Medicine Physician
  • Saint John, IN
  • NPI 1487045399
  Medicare reassignment Care Compare group NPD
• Emily M Hensley, PA

  • Physician Assistant
  • Munster, IN
  • NPI 1437943388
  Medicare reassignment Care Compare group
• Chelsea Beauregard, NP

  • Family Nurse Practitioner
  • Valparaiso, IN
  • NPI 1497410849
  Medicare reassignment NPD
• Samantha Nicole Bogacz, FNP

  • Family Nurse Practitioner
  • Valparaiso, IN
  • NPI 1992272405
  Medicare reassignment NPD
• Elizabeth Case

  • Family Nurse Practitioner
  • Highland, IN
  • NPI 1629447891
  Medicare reassignment NPD

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

{
    "created_epoch": "1194393600000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1776988800000",
    "number": "1003096900",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 736895",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606736895",
            "telephone_number": "219-922-8051",
            "fax_number": "219-922-8608"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "9410 CALUMET AVE STE 101",
            "city": "MUNSTER",
            "state": "IN",
            "postal_code": "463212812",
            "telephone_number": "219-922-8051",
            "fax_number": "219-922-8608"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "6625 W Lincoln Hwy",
            "address_purpose": "LOCATION",
            "city": "Crown Point",
            "state": "IN",
            "postal_code": "463079678",
            "country_code": "US",
            "telephone_number": "219-922-8051",
            "fax_number": "219-922-8608",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1275 E North St Ste 102",
            "address_purpose": "LOCATION",
            "city": "Crown Point",
            "state": "IN",
            "postal_code": "463073541",
            "country_code": "US",
            "telephone_number": "219-922-8051",
            "fax_number": "219-922-8608",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "organization_name": "DR MARY TILAK PC",
        "organizational_subpart": "NO",
        "enumeration_date": "2007-11-07",
        "last_updated": "2026-04-24",
        "certification_date": "2026-04-24",
        "status": "A",
        "authorized_official_last_name": "TILAK",
        "authorized_official_first_name": "MARY",
        "authorized_official_middle_name": "N.",
        "authorized_official_title_or_position": "PRESIDENT",
        "authorized_official_telephone_number": "219-922-8051",
        "authorized_official_credential": "M.D."
    },
    "taxonomies": [
        {
            "code": "207RB0002X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Internal Medicine, Obesity Medicine",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

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• Obesity Medicine (Internal Medicine) Physician in Munster, IN
• Providers in Munster, IN by specialty
• Obesity Medicine (Internal Medicine) Physician in Indiana

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 24, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
• 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.