Mr Douglas A Tomasian, MD - Medicare Cardiovascular Disease (cardiology) in Barrington, IL

Mr Douglas A Tomasian, MD is a medicare enrolled "Internal Medicine - Cardiovascular Disease" physician in Barrington, Illinois. He went to Jefferson Medical College Of Thomas Jefferson University and graduated in 1995 and has 31 years of diverse experience with area of expertise as Cardiovascular Disease (cardiology). He is a member of the group practice Global Care S.c. and his current practice location is 600 Hart Rd Ste 100, Barrington, Illinois. You can reach out to his office (for appointments etc.) via phone at (815) 477-8900.

Mr Douglas A Tomasian is licensed to practice in Illinois (license number 036096363) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1922187756.

Contact Information

Mr Douglas A Tomasian, MD
600 Hart Rd Ste 100,
Barrington, IL 60010-2662
(815) 477-8900
(815) 477-7160

Map and Direction




Physician's Profile

Full NameMr Douglas A Tomasian
GenderMale
SpecialityCardiovascular Disease (cardiology)
Experience31 Years
Location600 Hart Rd Ste 100, Barrington, Illinois
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Mr Douglas A Tomasian attended and graduated from Jefferson Medical College Of Thomas Jefferson University in 1995
  NPI Data:
  • NPI Number: 1922187756
  • Provider Enumeration Date: 11/03/2006
  • Last Update Date: 10/29/2025
  Medicare PECOS Information:
  • PECOS PAC ID: 5092600064
  • Enrollment ID: I20040218000638

Medical Identifiers

Medical identifiers for Mr Douglas A Tomasian such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1922187756NPI-NPPES
05625392OtherILBC & BS OF ILLINOIS
P00272058OtherILRAILROAD MC
036096363OtherILSTATE LICENSE
036096363MedicaidIL

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RC0000XInternal Medicine - Cardiovascular Disease 036096363 (Illinois)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Advocate Good Shepherd HospitalBarrington, ILHospital
Northwestern Medicine Mchenry HospitalMchenry, ILHospital
Central Dupage HospitalWinfield, ILHospital
Advocate Lutheran General HospitalPark ridge, ILHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Global Care S.c.58906998053

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Mr Douglas A Tomasian allows following entities to bill medicare on his behalf.
Entity NameGlobal Care, Sc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1033309042
PECOS PAC ID: 5890699805
Enrollment ID: O20031121000346

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Mr Douglas A Tomasian is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Mr Douglas A Tomasian, MD
600 Hart Rd Ste 100,
Barrington, IL 60010-2662

Ph: (815) 477-8900
Mr Douglas A Tomasian, MD
600 Hart Rd Ste 100,
Barrington, IL 60010-2662

Ph: (815) 477-8900

Reviews and Comments


Internal Medicine Doctors in Barrington, IL

Dr. Avani Mehta Shah, M.D.
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Dr. Jeffrey H Freihage, M.D.
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Dr. Michael B Soble, M.D.
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Dr. Donald F Cronin, MD
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Tasbirul Islam, MD
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Stacey L Mckelvey, MD
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Medicare: Accepting Medicare Assignments
Practice Location: 200 Fox Glen Ct, Barrington, IL 60010
Phone: 847-382-7165    Fax: 847-713-8160

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.