Ofer Fass, MD

Primary specialty

Gastroenterology PhysicianTaxonomy code 207RG0100X

License

036170527 Issued in IL

Practice address

259 E Erie St Ste 1600
Chicago, IL 60611-3111

Phone

(312) 695-5620

Fax

(312) 695-2778

NPI assigned

Apr 20, 2017

Sex

Male

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in NY, IL2 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 2

Specialty

GastroenterologyAlso: Internal Medicine

Education

Harvard Medical School, 2017

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Northwestern Medical Faculty FoundationGroup PAC ID 4587576814, 4,386 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Northwestern Memorial Hospital Hospital, Chicago, IL, CCN 140281
• Northwestern Lake Forest Hospital Hospital, Lake Forest, IL, CCN 140130

Merit-based Incentive Payment System (MIPS)

Final score

95.19 of 100Reported as apm

Quality

83.05

Promoting interoperability

100

Improvement activities

40

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: ofass675346@nychhc.direct-ci.com

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.

• Northwestern Medical Faculty Foundation

  • Multi-Specialty Clinic/Center
  • Carol Stream, IL
  • NPI 1346235314
  Medicare reassignment Care Compare group NPD
• NYU Langone Hospitals

  • Internal Medicine Physician
  • New York, NY
  • NPI 1790975944
  Medicare reassignment NPD
• Northwestern Medical Faculty Foundation

  • Durable Medical Equipment & Medical Supplies
  • Chicago, IL
  • NPI 1417718479
  NPD
• NYU Langone Hospitals

  • Psychiatric Hospital Unit
  • Patchogue, NY
  • NPI 1508687021
  NPD
• NYU Langone Hospitals

  • Multi-Specialty Clinic/Center
  • Brooklyn, NY
  • NPI 1831549559
  NPD
• Central Dupage Physician Group

  • Family Medicine Physician
  • Carol Stream, IL
  • NPI 1033149844

  Internal Medicine

  NPD (past)

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

• Northwestern Lake Forest Hospital

  • General Acute Care Hospital
  • Lake Forest, IL
  • NPI 1124025176
  Care Compare affiliation
• Northwestern Memorial Hospital

  • General Acute Care Hospital
  • Chicago, IL
  • NPI 1497859649
  Care Compare affiliation

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

{
    "created_epoch": "1492646400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1734393600000",
    "number": "1154856714",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "550 1ST AVE",
            "city": "NEW YORK",
            "state": "NY",
            "postal_code": "100166402",
            "telephone_number": "212-263-5506"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "259 E ERIE ST STE 1600",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606113111",
            "telephone_number": "312-695-5620",
            "fax_number": "312-695-2778"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "550 1st Ave",
            "address_purpose": "LOCATION",
            "city": "New York",
            "state": "NY",
            "postal_code": "100166402",
            "country_code": "US",
            "telephone_number": "646-929-7870",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "FASS",
        "first_name": "OFER",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2017-04-20",
        "last_updated": "2024-12-17",
        "certification_date": "2024-12-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "NY",
            "license": "298903",
            "primary": false
        },
        {
            "code": "207RG0100X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Gastroenterology",
            "state": "IL",
            "license": "036170527",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Clarissa Fasbender
• Jo M Fasen, MPT, OCS, CSCS, MDT
• Brian Joseph Fask, LCSW
• Ariana Cristina Faso, DNP, CPNP-PC
• Olalekan Olumuyiwa Fasogbon, PMHNP
• Meghan Lively Fasseas
• Fast and Friendly Transportation LLC
• Jennifer L Fast, PT
• Fastrad Chicago LLC
• Fastrad LLC

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

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Dec 17, 2024; 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.