Andrew Tannenbaum, M.D.

Primary specialty

Vascular & Interventional Radiology PhysicianTaxonomy code 2085R0204X

License

036147111 Issued in IL

Practice address

901 Grant St
Harvard, IL 60033-1821

Phone

(815) 943-5431

Fax

(815) 943-0659

NPI assigned

Jun 29, 2012

Last updated

Apr 1, 2026By the provider in NPPES

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

Enrolled in IL

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 1

Specialty

Diagnostic Radiology

Education

Boston University School of Medicine, 2012

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Rockford Health PhysiciansGroup PAC ID 2567374036, 520 clinicians

Mercy Health System CorporationGroup PAC ID 7416860440, 749 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Javon Bea Hospital Hospital, Rockford, IL, CCN 140239
• Mercyhealth Hospital & Physician Clinic-Crystal la Hospital, Crystal Lake, IL, CCN 140308
• Mercy Health System Corp Hospital, Janesville, WI, CCN 520066
• CGH Medical Center Hospital, Sterling, IL, CCN 140043
• Mercy Harvard Hospital Hospital, Harvard, IL, CCN 141335

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: atannenbaum63286@direct.mhemail.org

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.

• Rockford Health Physicians

  dba Mercyhealth Physicians

  • Multi-Specialty Clinic/Center
  • Rockford, IL
  • NPI 1043242886
  Medicare reassignment Care Compare group NPD
• Mercy Health System Corporation

  dba MHS Physician Services

  • Multi-Specialty Clinic/Center
  • Janesville, WI
  • NPI 1598718603

  IL

  Medicare reassignment Care Compare group NPD
• Specialists in Medical Imaging SC

  • Diagnostic Radiology Physician
  • Olympia Fields, IL
  • NPI 1841687951
  Medicare reassignment NPD
• Singleton Associates PA

  • Diagnostic Radiology Physician
  • Shenandoah, TX
  • NPI 1538107875

  IL

  Medicare reassignment NPD
• Freeport Memorial Hospital

  dba FHN-Memorial Hospital

  • General Acute Care Hospital
  • Freeport, IL
  • NPI 1447228788
  Medicare reassignment
• RMH Pathologists, LTD

  • Anatomic Pathology Physician
  • Rockford, IL
  • NPI 1184671992
  NPD
• Mercy Health System Corporation

  dba Mercy Walworth Hospital and Medical Center

  • Critical Access Hospital
  • Lake Geneva, WI
  • NPI 1699728550
  NPD

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

• CGH Medical Center

  • General Acute Care Hospital
  • Sterling, IL
  • NPI 1902854623
  Care Compare affiliation
• Javon Bea Hospital

  • General Acute Care Hospital
  • Rockford, IL
  • NPI 1629118609
  Care Compare affiliation
• Mercy Crystal Lake Hospital and Medical Center Inc

  dba Mercyhealth Hospital and Physician Clinic-Crystal Lake

  • General Acute Care Hospital
  • Crystal Lake, IL
  • NPI 1023754371
  Care Compare affiliation
• Mercy Harvard Hospital Inc

  • Critical Access Hospital
  • Harvard, IL
  • NPI 1427001445
  Care Compare affiliation
• Mercy Health System Corporation

  dba Mercy Hospital Janesville

  • General Acute Care Hospital
  • Janesville, WI
  • NPI 1093768962
  Care Compare affiliation

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

{
    "created_epoch": "1340928000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1775001600000",
    "number": "1972867315",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "901 GRANT ST",
            "city": "HARVARD",
            "state": "IL",
            "postal_code": "600331821",
            "telephone_number": "815-943-5431",
            "fax_number": "815-943-0659"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "901 GRANT ST",
            "city": "HARVARD",
            "state": "IL",
            "postal_code": "600331821",
            "telephone_number": "815-943-5431",
            "fax_number": "815-943-0659"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1 Boston Medical Ctr Pl",
            "address_2": "Dept of Radiology - FGH Bldg",
            "address_purpose": "LOCATION",
            "city": "Boston",
            "state": "MA",
            "postal_code": "021182908",
            "country_code": "US",
            "telephone_number": "617-638-8000",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1045 W Stephenson St",
            "address_purpose": "LOCATION",
            "city": "Freeport",
            "state": "IL",
            "postal_code": "610324864",
            "country_code": "US",
            "telephone_number": "815-599-6000",
            "fax_number": "815-599-7974",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1045 W Stephenson St",
            "address_purpose": "LOCATION",
            "city": "Freeport",
            "state": "IL",
            "postal_code": "610324864",
            "country_code": "US",
            "telephone_number": "815-599-6000",
            "fax_number": "815-599-7974",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "8201 E Riverside Blvd",
            "address_purpose": "LOCATION",
            "city": "Rockford",
            "state": "IL",
            "postal_code": "611142300",
            "country_code": "US",
            "telephone_number": "815-971-5000",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "875 South Route 31",
            "address_purpose": "LOCATION",
            "city": "Crystal Lake",
            "state": "IL",
            "postal_code": "60014",
            "country_code": "US",
            "telephone_number": "779-220-5500",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "2000 Lake Ave",
            "address_purpose": "LOCATION",
            "city": "Woodstock",
            "state": "IL",
            "postal_code": "600987401",
            "country_code": "US",
            "telephone_number": "815-337-7100",
            "fax_number": "815-337-4793",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "3922 Mercy Dr",
            "address_purpose": "LOCATION",
            "city": "McHenry",
            "state": "IL",
            "postal_code": "600503179",
            "country_code": "US",
            "telephone_number": "815-344-4499",
            "fax_number": "815-344-4779",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "TANNENBAUM",
        "first_name": "ANDREW",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2012-06-29",
        "last_updated": "2026-04-01",
        "certification_date": "2026-04-01",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "MA",
            "license": "252241",
            "primary": false
        },
        {
            "code": "2085R0202X",
            "taxonomy_group": "",
            "desc": "Radiology, Diagnostic Radiology",
            "state": "MA",
            "license": "252241",
            "primary": false
        },
        {
            "code": "2085R0204X",
            "taxonomy_group": "",
            "desc": "Radiology, Vascular & Interventional Radiology",
            "state": "IL",
            "license": "036147111",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• James H Sullivan, MD
• Erin K Swanson, R.D.
• Sharon A Swanson, RD
• Louis Szczap, RPH
• Amber Lynn Szydelko, APRN, FNP
• Timothy Chrapkiewicz DDS Inc
• Michelle A Velasco, PTA
• Deana Vickerman-Smith
• Mark Andrew Vierke, R.P.H
• Shailesh R Virani, MD

• Vascular & Interventional Radiology Physician in Harvard, IL
• Providers in Harvard, IL by specialty
• Vascular & Interventional Radiology Physician in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 1, 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.