Rheumatology Treatment Centers of America

Primary specialty

Non-Pharmacy Dispensing SiteTaxonomy code 332900000X

Legal business name

RHEUMATOLOGY TREATMENT CENTERS OF AMERICA

Practice address

118 E 90TH Dr
Merrillville, IN 46410-7160

Phone

(219) 736-2922

NPI assigned

Dec 12, 2025

Last updated

Dec 12, 2025By the provider in NPPES

Organization subpart

Yes

Parent organization

RHEUMATOLOGY TREATMENT CENTERS OF AMERICAAs reported in NPPES

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

Authorized official

Name

Dr. Ahmad Muhammad Salah, DONPI 1285909481

Title

President

Phone

(219) 736-2922

Specialties & licenses 1

Addresses

Tax ID family

Rheumatology Treatment Centers of America2 organizations share this tax ID, including this one

Part of

Rheumatology Treatment Centers of America

Other organizations with this tax ID 1

Organizations that report the same tax identification number in the National Provider Directory.

• Rheumatology Treatment Centers of America

  dba RTC America LLC

  • Rheumatology Physician
  • Merrillville, IN
  • NPI 1568284339
  NPD tax ID

Locations

Parent organization (reported in NPPES) 1

This organization reports itself as a subpart in NPPES; the parent’s legal name matches this organization in the same state.

• Rheumatology Treatment Centers of America

  dba RTC America LLC

  • Rheumatology Physician
  • Merrillville, IN
  • NPI 1568284339
  NPPES parent name

Practitioners 1

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.

• Ahmad Muhammad Salah, D.O

  • Rheumatology Physician
  • Merrillville, IN
  • NPI 1285909481
  NPD Authorized official

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

{
    "created_epoch": "1765497600000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1765497600000",
    "number": "1013871110",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "118 E 90TH DR",
            "city": "MERRILLVILLE",
            "state": "IN",
            "postal_code": "464107160",
            "telephone_number": "219-736-2922"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "118 E 90TH DR",
            "city": "MERRILLVILLE",
            "state": "IN",
            "postal_code": "464107160",
            "telephone_number": "219-736-2922"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "RHEUMATOLOGY TREATMENT CENTERS OF AMERICA",
        "organizational_subpart": "YES",
        "parent_organization_legal_business_name": "RHEUMATOLOGY TREATMENT CENTERS OF AMERICA",
        "enumeration_date": "2025-12-12",
        "last_updated": "2025-12-12",
        "certification_date": "2025-12-12",
        "status": "A",
        "authorized_official_last_name": "SALAH",
        "authorized_official_first_name": "AHMAD",
        "authorized_official_middle_name": "MUHAMMAD",
        "authorized_official_title_or_position": "PRESIDENT",
        "authorized_official_telephone_number": "219-736-2922",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "DO"
    },
    "taxonomies": [
        {
            "code": "332900000X",
            "taxonomy_group": "",
            "desc": "Non-Pharmacy Dispensing Site",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Retson Plastic Surgerypc
• Nicholas Chris Retson, MD
• Jill Revere, BCBA
• Cynthia Reynolds
• Ciarra Rhaburn
• Rheumatology Treatment Centers of America (RTC America LLC)
• Melissa Rhodes
• Griffin Rhyne
• Richard O. Oni, MD, Inc (Orthopaedic Surgeons, LTD.)
• Aaron Richards, RBT

• Non-Pharmacy Dispensing Site in Merrillville, IN
• Providers in Merrillville, IN by specialty
• Non-Pharmacy Dispensing Site in Indiana

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Dec 12, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.