MR. DOUGLAS A TOMASIAN MD
NPI 1922187756
Internal Medicine - Cardiovascular Disease in Barrington, IL

Q: What is Douglas Tomasian's NPI number?

The NPI number for Douglas Tomasian is 1922187756. It was assigned to this individual provider in the NPPES registry on November 3, 2006.

Q: What is Douglas Tomasian's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Q: When was this NPI record last updated?

The NPPES record for Douglas Tomasian was last updated on October 29, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since November 03, 2006PECOS EnrolledAccepts Medicare Assignment

600 HART RD STE 100, BARRINGTON, IL 60010(815) 477-8900(815) 477-7160 Get Directions Write a Review

NPPES record last updated: October 29, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Dec 17, 2021, Apr 10, 2020, Jan 29, 2019 and 3 more (6 updates tracked since 2017).

On this page

About Mr. Douglas A Tomasian Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MR. DOUGLAS A TOMASIAN MD (NPI 1922187756) is an individual cardiovascular disease provider in Barrington, Illinois, licensed in Illinois (036096363) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS, is affiliated with Advocate Sherman Hospital, and maintains a secondary practice location in Crystal Lake.

NPPES Registry Identity

NPI1922187756

Entity TypeIndividualMale

Primary Taxonomy207RC0000X

Provider Legal NameMR. DOUGLAS A TOMASIANCredential: MD

Location Address600 HART RD STE 100Barrington, IL 60010-2662

Mailing Address600 Hart Rd Ste 100Barrington, IL 60010-2662 · (815) 477-8900 · Fax (815) 477-7160

Phone(815) 477-8900

Fax(815) 477-7160

Sole ProprietorNo

Medical School CMSJefferson Medical College Of Thomas Jefferson UniversityGraduated 1995

Enumeration DateNovember 3, 2006

Last NPPES UpdateOctober 29, 20256 updates tracked since enumeration

NPPES CertifiedOctober 29, 2025

✔ NPI 1922187756 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RC0000X

License✔ Licensed in IL · 036096363

Definition

An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.

600 HART RD STE 100, Barrington, IL 60010

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Secondary Practice Location 1

Location 1284 Memorial Ct Ste BCrystal Lake, IL 60014-6231 · Phone (815) 477-8900 · Fax (815) 477-7160

Other Identifiers 4

Other05625392IL · Bc & Bs Of Illinois

OtherP00272058IL · Railroad Mc

Other036096363IL · State License

Medicaid036096363IL

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mr. Douglas A Tomasian Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID5092600064

PECOS Enrollment IDI20040218000638

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 35

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

849 services441 patients

Injection, regadenoson, 0.1 mg J2785

Regadenoson injection, 0.1 mg, is a medication used to help visualize the heart during a stress test. It works by increasing blood flow in the arteries of the heart. It's injected into a vein and is generally well-tolerated.

284 services71 patients

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306

This is a heart ultrasound, also known as an echocardiogram. It uses sound waves to create pictures of your heart, showing how blood flows through it. The color depicts the blood flow's speed and direction. It also checks the heart's valves to ensure they're working properly.

249 services228 patients

Technetium tc-99m sestamibi, diagnostic, per study dose A9500

Technetium Tc-99m Sestamibi is a diagnostic test used to create images of your heart or breast tissues. It involves a safe radioactive substance injection that helps doctors to detect any abnormalities or changes in these tissues.

224 services111 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

187 services92 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000

An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.

166 services145 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

160 services149 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision and review by physician 93015

An exercise or drug-induced heart stress test with ECG is a procedure performed by a doctor to assess how your heart responds to exertion. It involves monitoring your heart's electrical activity while you exercise or after medication is given to mimic exercise effects.

117 services114 patients

Nuclear medicine studies of heart muscle at rest and with stress and spect 78452

Nuclear medicine studies of the heart involve two parts: rest and stress. During rest, images are taken of your heart at ease. During stress, images are taken after exercise or medication-induced stress. SPECT is a special imaging technique providing 3D pictures of your heart, helping identify any issues.

112 services111 patients

Infusion, normal saline solution, 250 cc J7050

An infusion of normal saline solution, 250 cc, involves administering a sterile saltwater solution into your body through a vein, usually in your arm. This helps to replenish fluids, maintain hydration, and balance electrolytes in your body.

112 services111 patients

Ultrasound scan of abdominal aorta 76706

An ultrasound scan of the abdominal aorta is a non-invasive imaging test. It uses sound waves to create pictures of the main blood vessel in your abdomen, the aorta, to check its size and shape. This helps detect any abnormalities or issues early.

90 services90 patients

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306

72 services72 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

72 services72 patients

Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes 99152

This procedure involves a doctor administering a medication to reduce your consciousness during a procedure. This helps in managing discomfort and anxiety. The initial application lasts for 15 minutes and is for individuals aged 5 years or older.

67 services62 patients

Ultrasound of both sides of head and neck blood flow 93880

An ultrasound of the head and neck blood flow is a safe, non-invasive procedure that uses sound waves to create images of blood vessels. It helps detect abnormalities like blockages or clots, ensuring optimal blood flow.

54 services53 patients

Ultrasonic guidance for blood vessel access 76937

Ultrasonic guidance for blood vessel access is a medical procedure where sound waves are used to create images of your blood vessels. This helps doctors to accurately locate and access the vessels for treatments or tests, ensuring safety and precision.

46 services41 patients

Heart rhythm recording of continous external ekg over 8-15 days 93246

A heart rhythm recording is a non-invasive procedure where a small device, attached externally, monitors your heart's electrical activity for 8-15 days. It helps detect irregular heart rhythms, assess heart rate, and guide treatment decisions. It's safe, painless, and can be done during normal daily activities.

37 services36 patients

Heart rhythm review and interpretation of continous external ekg over 8-15 days 93248

This service involves wearing a device for 8-15 days that continuously records your heart's electrical activity. It helps in identifying irregular heart rhythms. The recorded data is then reviewed and interpreted by a healthcare professional for any abnormalities.

37 services36 patients

Heart rhythm recording continous external ekg over more than 48 hours up to 7 days 93242

This procedure involves wearing a device, an external EKG, for up to 7 days to continuously monitor your heart rhythm. It helps detect irregularities that may not occur during a standard EKG. The device is non-invasive and safe.

33 services33 patients

Heart rhythm review, and interpretation of continous external ekg over more than 48 hours up to 7 days 93244

A heart rhythm review involves monitoring your heart's electrical activity for more than 48 hours up to 7 days. Using a device called an external EKG, doctors can track your heartbeats to detect irregularities and help diagnose heart conditions.

33 services33 patients

Insertion of tube in left lower heart chamber and coronary artery for diagnosis with review by radiologist 93458

This procedure involves placing a tube into your left lower heart chamber and coronary artery. It helps doctors diagnose heart conditions by allowing them to view these areas in detail. A radiologist will review the images to ensure accurate diagnosis.

32 services32 patients

Ultrasound of leg arteries or artery grafts 93925

An ultrasound of leg arteries or artery grafts is a non-invasive imaging test. It uses high-frequency sound waves to capture live images from inside your body, specifically your leg arteries or grafts. This helps in detecting any blockages or abnormalities.

25 services24 patients

Ultrasound study of arm or leg veins with compression and maneuvers 93970

An ultrasound study of arm or leg veins with compression and maneuvers is a non-invasive procedure that uses sound waves to create images of your veins. This helps identify blood clots or other vein problems. During the procedure, pressure is applied to the veins and certain movements are performed to assess blood flow.

24 services24 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with review by physician 93018

An exercise or drug-induced heart stress test with ECG is a procedure to assess how your heart functions under stress. It can involve exercising or medication to make your heart work harder while an ECG records its activity. A physician reviews the results.

21 services21 patients

Ultrasound study of arm and leg arteries 93922

An ultrasound study of arm and leg arteries is a non-invasive procedure that uses sound waves to create images of your arteries. It helps in checking blood flow, identifying blockages, or detecting other abnormalities in your arteries.

21 services21 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

20 services15 patients

Transitional care management services for problem of high complexity 99496

Transitional care management services are designed to ensure a smooth transition from a hospital to home or another care setting for patients with complex health issues. These services include medication management, patient education, and coordination with healthcare providers.

20 services19 patients

Hospital discharge day management, more than 30 minutes 99239

Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.

19 services18 patients

Insertion of stents with balloon dilation of coronary artery or branch, single artery or branch 92928

This procedure involves placing a small, mesh tube (stent) in your coronary artery to keep it open. A balloon is used to expand the stent and artery, improving blood flow to your heart. It's typically done for a single artery or branch.

18 services15 patients

Limited ultrasound scan of abdomen 76705

A limited ultrasound scan of the abdomen is a non-invasive imaging test. It uses sound waves to produce images of the abdominal organs such as the liver, gallbladder, spleen, pancreas, and kidneys. This helps to identify any abnormalities or issues.

16 services16 patients

Ultrasound of heart blood flow, valves and chambers 93320

An ultrasound of your heart, also known as an echocardiogram, is a test that uses sound waves to create detailed images of your heart. It helps doctors check the health of your heart's chambers, valves, and blood flow.

16 services16 patients

Ultrasound of heart with color-depicted blood flow, rate and valve function 93325

An ultrasound of the heart, also known as an echocardiogram, uses sound waves to create pictures of your heart. It shows the structure, movement, and blood flow within your heart. This helps assess the heart's health and function, including the valves and rate.

16 services16 patients

Ultrasound of heart with continuous electrocardiogram (ecg) during rest, exercise and/or drug induced stress with review and report 93351

This procedure involves using ultrasound technology to create images of your heart while you rest, exercise, or undergo drug-induced stress. An ECG continuously monitors your heart's electrical activity. It helps doctors assess heart health and function.

15 services15 patients

Transitional care management services for problem of at least moderate complexity 99495

Transitional care management services focus on coordinating and managing your care after you leave the hospital. For moderate complexity problems, this involves managing your medications, arranging further treatments, and ensuring you have the necessary follow-ups.

14 services14 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

13 services12 patients

Hospital Affiliations CMS Care Compare 5

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Advocate Sherman Hospital

Acute Care Hospitals · Elgin, IL

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140030

Location1425 North Randall RoadElgin, IL 60123 · Kane County

Emergency services Birthing friendly

Northwestern Medicine Mchenry

Acute Care Hospitals · Mchenry, IL

5/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number140116

Location4201 Medical Center DriveMchenry, IL 60050 · Mc Henry County

Emergency services Birthing friendly

Advocate Lutheran General Hospital

Acute Care Hospitals · Park Ridge, IL

5/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number140223

Location1775 Dempster StPark Ridge, IL 60068 · Cook County

Emergency services Birthing friendly

Northwestern Medicine Central Dupage Hospital

Acute Care Hospitals · Winfield, IL

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140242

Location25 North Winfield RoadWinfield, IL 60190 · Du Page County

Emergency services Birthing friendly

Advocate Good Shepherd Hospital

Acute Care Hospitals · Barrington, IL

4/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number140291

Location450 West Highway 22Barrington, IL 60010 · Lake County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60010 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$137.43 typical visit price

range $59.81 – $181.38

Typical copayment $34.35 (range $14.95 – $45.34)

Most-billed visit code 99204

Established Patient

$74.38 typical visit price

range $19.15 – $147.12

Typical copayment $18.59 (range $4.78 – $36.78)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 4

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

GLOBAL CARE S.C.

Internal Medicine (Interventional Cardiology)

600 HART RD STE 100
BARRINGTON, IL 60010

Cook County (815) 477-8900

TERESA FISCHLER MSN, APRN, FNP-BC

Nurse Practitioner (Family)

600 HART RD STE 100
BARRINGTON, IL 60010

Cook County (815) 477-8900

DR. RAJA SHARMA M.D.

Internal Medicine (Interventional Cardiology)

600 HART RD STE 100
BARRINGTON, IL 60010

Cook County (815) 477-8900

MS. MELISSA DAWN MACDONALD APRN, CNP

Nurse Practitioner (Adult Health)

600 HART RD STE 100
BARRINGTON, IL 60010

Cook County (815) 477-8900

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Douglas Tomasian's NPI number?

The NPI number for Douglas Tomasian is 1922187756. It was assigned to this individual provider in the NPPES registry on November 3, 2006.

Where is Douglas Tomasian located?

Douglas Tomasian practices at 600 Hart Rd Ste 100, Barrington, IL 60010. The listed phone number is (815) 477-8900.

What is Douglas Tomasian's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is Douglas Tomasian enrolled in Medicare?

Yes. Douglas Tomasian is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is Douglas Tomasian affiliated with any hospitals?

According to CMS data, Douglas Tomasian is affiliated with Advocate Sherman Hospital, Northwestern Medicine Mchenry, Advocate Lutheran General Hospital, Northwestern Medicine Central Dupage Hospital and Advocate Good Shepherd Hospital.

When was this NPI record last updated?

The NPPES record for Douglas Tomasian was last updated on October 29, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.