Ithaar Derweesh, MD

Primary specialty

Urology PhysicianTaxonomy code 208800000X

License

036.176621 Issued in IL

Practice address

1725 W Harrison St Ste 970
Chicago, IL 60612-3828

Phone

(312) 563-3447

Fax

(312) 563-3721

NPI assigned

Apr 27, 2006

Sex

Male

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Other identifiers 1

Medicare fee-for-service enrollment

Enrolled in CA, MO, IL3 enrollments

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.

Enrollment records 3

Specialty

Urology

Education

University of Chicago, Pritzker School of Medicine, 1995

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Mercy Clinic Joplin LLCGroup PAC ID 0547300196, 288 clinicians

Rush University Medical GroupGroup PAC ID 5496658874, 1,521 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Rush University Medical Center Hospital, Chicago, IL, CCN 140119
• UC San Diego Health Hillcrest - Hillcrest Med Ctr Hospital, San Diego, CA, CCN 050025
• Rush Oak Park Hospital Hospital, Oak Park, IL, CCN 140063
• Copley Memorial Hospital Hospital, Aurora, IL, CCN 140029

Merit-based Incentive Payment System (MIPS)

Final score

90.77 of 100Reported as group

Quality

84.13

Promoting interoperability

100

Improvement activities

40

Cost

73.88

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Networks

• IL HMO C-SNP
• devoted network organization-1baeae7e-6b6f-49f9-a562-1b2d2e55c806
• devoted network organization-2b183dd2-4e80-4977-80a6-4fdf0df4361d
• IL PPO Downstate
• devoted network organization-734447cc-691b-4aa7-a112-9c9c8698dcc9
• IA HMO C-SNP
• devoted network organization-27eb9117-6975-449a-a7ad-909243995ddc
• IA HMO

Interoperability endpoints

• Direct secure messaging: iderweesh235861@santaclaravalley.direct-ci.net

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.

• Rush University Medical Group

  dba Rush University Internists

  • Internal Medicine Physician
  • Chicago, IL
  • NPI 1093819542

  Urology

  Medicare reassignment Care Compare group NPD
• Mercy Clinic Joplin LLC

  • Family Medicine Physician
  • Joplin, MO
  • NPI 1215264817
  Medicare reassignment Care Compare group NPD
• Regents of the University of California

  • Surgery Physician
  • San Diego, CA
  • NPI 1740382993

  Urology

  Medicare reassignment NPD
• Rush University Medical Center

  dba Radiology Services

  • Diagnostic Radiology Physician
  • Chicago, IL
  • NPI 1184269425
  NPD
• Regents of the University of California

  • Diagnostic Radiology Physician
  • San Diego, CA
  • NPI 1558463927
  NPD
• Regents of the University of California Ucsd Head and Neck Surgery

  • Otolaryngology Physician
  • San Diego, CA
  • NPI 1679509962
  NPD (past)

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

• Copley Memorial Hospital, Inc.

  • General Acute Care Hospital
  • Aurora, IL
  • NPI 1295882561
  Care Compare affiliation
• Rush Oak Park Hospital Inc

  • General Acute Care Hospital
  • Oak Park, IL
  • NPI 1558391706
  Care Compare affiliation
• Rush University Medical Center

  • Children's Hospital
  • Chicago, IL
  • NPI 1801908728
  Care Compare affiliation
• Rush University Medical Center

  • General Acute Care Hospital
  • Chicago, IL
  • NPI 1932213600
  Care Compare affiliation
• Regents of the University of California

  dba UCSD Medical Center

  • General Acute Care Hospital
  • San Diego, CA
  • NPI 1184722779
  Care Compare affiliation

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

{
    "created_epoch": "1146096000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1771200000000",
    "number": "1003873720",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1620 W HARRISON ST",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606123801"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1725 W HARRISON ST STE 970",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606123828",
            "telephone_number": "312-563-3447",
            "fax_number": "312-563-3721"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "DERWEESH",
        "first_name": "ITHAAR",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-04-27",
        "last_updated": "2026-02-16",
        "certification_date": "2026-02-16",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208800000X",
            "taxonomy_group": "",
            "desc": "Urology",
            "state": "IL",
            "license": "036.176621",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "3332625",
            "state": "TN"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Maria Ida Derrig, DO
• Ariel Derringer, CNM
• Allyson Derting, MS, CGC
• Amy Derusha
• Joy A Derusha, PA
• Bogdan Derylo, MD
• Desai Pharmacy Inc
• Aakash J Desai
• Achyut D Desai, OD
• Amar D. Desai, MD, MPH

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

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 16, 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.
• 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.