Robert Ratajczak, MD

Primary specialty

Psychiatry PhysicianTaxonomy code 2084P0800X

License

125.075645 Issued in IL

Practice address

213 W Institute PL Ste 500
Chicago, IL 60610-8792

Phone

(312) 945-0780

NPI assigned

Apr 21, 2020

Sex

Male

Sole proprietor

No

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

Specialties & licenses 3

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

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.

Opted out of Medicare

Yes, effective Jun 27, 2025 through Jun 27, 2027

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

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.

• Able Psychiatry LLC

  • Psychiatry Physician
  • Chicago, IL
  • NPI 1588019517
  NPD (past)

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

{
    "created_epoch": "1587427200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1781481600000",
    "number": "1851911747",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "213 W INSTITUTE PL STE 500",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606108792",
            "telephone_number": "312-945-0780"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "213 W INSTITUTE PL STE 500",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606108792",
            "telephone_number": "312-945-0780"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "RATAJCZAK",
        "first_name": "ROBERT",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2020-04-21",
        "last_updated": "2026-06-15",
        "certification_date": "2026-06-15",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": "IL",
            "license": "125.075645",
            "primary": false
        },
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "2084P0800X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": "IL",
            "license": "125.075645",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Mary Rastetter
• Alok Rastogi, M.D.
• Kevin James Rasuli, MD
• Mark Ratain
• Ratajczak Psychiatry Services PLLC
• Emily Ratcliff, PHARMD
• Frances Sue Ratcliff, MISA II
• Angela J Ratcliffe
• Deandre Ratcliffe, RBT
• Deepak Rath, M.D., MBBS

• Psychiatry Physician in Chicago, IL
• Providers in Chicago, IL by specialty
• Psychiatry Physician in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 15, 2026; 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; Opt Out Affidavits.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.