NPIMap

Individual provider Active NPI

Douglas A Tomasian, MD

  • Cardiovascular Disease Physician
  • Barrington, IL
National Provider Identifier
1922187756
Registry record updated Oct 29, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Cardiovascular Disease PhysicianTaxonomy code 207RC0000X
License
036096363 Issued in IL
Practice address
600 Hart Rd Ste 100
Barrington, IL 60010-2662
Phone
(815) 477-8900
Fax
(815) 477-7160
NPI assigned
Nov 3, 2006
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Oct 29, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Cardiovascular Disease Physician 207RC0000X 036096363 IL Primary

Addresses

Primary practice location

600 Hart Rd Ste 100
Barrington, IL 60010-2662

Mailing address

600 Hart Rd Ste 100
Barrington, IL 60010-2662
Phone (815) 477-8900

Other practice location 1

284 Memorial Ct Ste B
Crystal Lake, IL 60014-6231
Phone (815) 477-8900

Other identifiers 4

IdentifierTypeStateIssuer
05625392OtherILBC & BS OF ILLINOIS
P00272058OtherILRAILROAD MC
036096363OtherILSTATE LICENSE
036096363MedicaidIL

Electronic endpoints 2

TypeEndpointUseAffiliation
Direct Messaging Address dtomasian236530@direct.myadvocateaurora.org Direct
FHIR URL https://epicfhir.aurora.org/FHIR/MYAURORA/api/FHIR/DSTU2/

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in IL
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20040218000638 IL Practitioner - Cardiovascular Disease (Cardiology)Practitioner - Other (Physician) 5092600064 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Cardiovascular Disease (Cardiology)
Education
Jefferson Medical College of Thomas Jefferson University, 1995
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Global Care S.C.Group PAC ID 5890699805, 3 clinicians

Practice addresses (Care Compare)

284 Memorial CT
Suite B
Crystal Lake, IL 60014-6231
Phone (815) 477-8900

Hospital & facility affiliations

Procedures performed for Medicare patients

ProcedureNumber of procedures
Coronary angioplasty and stenting44
Leg revascularization (restoring blood flow)1-10

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

Practice roles

OrganizationSpecialtyStatusNew patients
Becker Clinic LTD Past Accepting new patients
Tuck Chiropractic Corporation Past Accepting new patients
Edward Cardiovascular Institute Cardiovascular Disease Past Accepting new patients
Midwest Heart Specialists, LTD Cardiovascular Disease Past Accepting new patients
Northwest Pulmonary and Sleep Medicine SC Past Accepting new patients

Interoperability endpoints

  • FHIR API: https://fhir4.healow.com/fhir/r4/CIHEBA
  • Direct secure messaging: dtomasian159263@direct.rush.rush-health.com

Organizations & group practices 6

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.

Hospital & facility affiliations 8

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

NPI Registry JSON

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

{
    "created_epoch": "1162512000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1761696000000",
    "number": "1922187756",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "600 HART RD STE 100",
            "city": "BARRINGTON",
            "state": "IL",
            "postal_code": "600102662",
            "telephone_number": "815-477-8900",
            "fax_number": "815-477-7160"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "600 HART RD STE 100",
            "city": "BARRINGTON",
            "state": "IL",
            "postal_code": "600102662",
            "telephone_number": "815-477-8900",
            "fax_number": "815-477-7160"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "284 Memorial Ct Ste B",
            "address_purpose": "LOCATION",
            "city": "Crystal Lake",
            "state": "IL",
            "postal_code": "600146231",
            "country_code": "US",
            "telephone_number": "815-477-8900",
            "fax_number": "815-477-7160",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "TOMASIAN",
        "first_name": "DOUGLAS",
        "middle_name": "A",
        "name_prefix": "Mr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-11-03",
        "last_updated": "2025-10-29",
        "certification_date": "2025-10-29",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RC0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Cardiovascular Disease",
            "state": "IL",
            "license": "036096363",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BC & BS OF ILLINOIS",
            "identifier": "05625392",
            "state": "IL"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "RAILROAD MC",
            "identifier": "P00272058",
            "state": "IL"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "STATE LICENSE",
            "identifier": "036096363",
            "state": "IL"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "036096363",
            "state": "IL"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "dtomasian236530@direct.myadvocateaurora.org",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "350 E Congress Pkwy Ste E",
            "city": "Crystal Lake",
            "state": "IL",
            "country_code": "US",
            "postal_code": "600146284",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://epicfhir.aurora.org/FHIR/MYAURORA/api/FHIR/DSTU2/",
            "affiliation": "N",
            "address_1": "350 E Congress Pkwy Ste E",
            "city": "Crystal Lake",
            "state": "IL",
            "country_code": "US",
            "postal_code": "600146284",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Barrington, IL

Sources for this page

Verify at the official NPI Registry.