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Individual provider Active NPI

Timothy Michael Chow

  • Nephrology Physician
  • Merrillville, IN
National Provider Identifier
1053871954
Registry record updated Sep 3, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Nephrology PhysicianTaxonomy code 207RN0300X
License
01101268A Issued in IN
Practice address
90 W 86TH Ave
Merrillville, IN 46410-7086
Phone
(291) 791-1555
NPI assigned
Mar 25, 2019
Last updated
Sep 3, 2026By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Sep 3, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X 01101268A IN
Nephrology Physician 207RN0300X 01101268A IN Primary

Addresses

Primary practice location

90 W 86TH Ave
Merrillville, IN 46410-7086

Mailing address

131 Crab Apple LN
Oak Brook, IL 60523-1409

Other practice location 1

90 W 86th Ave
Merrillville, IN 46410-7086
Phone (219) 791-1560

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in IA
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20251023003138 IA Practitioner - NephrologyPractitioner - Internal Medicine 9537549068 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
NephrologyAlso: Internal Medicine
Education
University of Missouri, Kansas City, School of Medicine, 2019
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
State University of IowaGroup PAC ID 7618884230, 1,886 clinicians

Practice addresses (Care Compare)

200 Hawkins Dr
Iowa City, IA 52242-1009
Phone (319) 356-1616

Hospital & facility affiliations

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
MD-55321IAMDInternal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
State University of Iowa Internal Medicine CurrentSince Sep 3, 2025 Accepting new patients

Locations

500 E Market St
Iowa City, IA 52245
Phone (319) 339-0300

200 Hawkins Dr
#H
Iowa City, IA 52242
Phone (319) 356-1616

200 Hawkins Dr
Iowa City, IA 52242
Phone (319) 356-1616

Organizations & group practices 1

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

Hospital & facility affiliations 7

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

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

{
    "created_epoch": "1553472000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1788393600000",
    "number": "1053871954",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "131 CRAB APPLE LN",
            "city": "OAK BROOK",
            "state": "IL",
            "postal_code": "605231409"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "90 W 86TH AVE",
            "city": "MERRILLVILLE",
            "state": "IN",
            "postal_code": "464107086",
            "telephone_number": "291-791-1555"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "90 W 86th Ave",
            "address_purpose": "LOCATION",
            "city": "Merrillville",
            "state": "IN",
            "postal_code": "464107086",
            "country_code": "US",
            "telephone_number": "219-791-1560",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "CHOW",
        "first_name": "TIMOTHY",
        "middle_name": "MICHAEL",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2019-03-25",
        "last_updated": "2026-09-03",
        "certification_date": "2026-09-03",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "IN",
            "license": "01101268A",
            "primary": false
        },
        {
            "code": "207RN0300X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Nephrology",
            "state": "IN",
            "license": "01101268A",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Merrillville, IN

Sources for this page

Verify at the official NPI Registry.