Douglas Tomasian, MD
NPI 1922187756 · Cardiovascular Disease Physician · Barrington, IL
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Douglas Tomasian, MD is a Cardiovascular Disease Physician provider in Barrington, IL (NPI 1922187756).
Provider details
- NPI number
- 1922187756
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 036096363 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
3,668 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 849 | $177 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 773 | $16 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 249 | $186 |
| Technetium Tc-99m Sestamibi, Diagnostic, Per Study DoseA9500 | 224 | $125 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 187 | $120 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 46 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metoprolol Succinate | 849 | 254 |
| Atorvastatin Calcium | 510 | 171 |
| Rosuvastatin Calcium | 510 | 151 |
| Carvedilol | 392 | 116 |
| Amlodipine Besylate | 383 | 123 |
| Losartan Potassium | 332 | 106 |
| Furosemide | 298 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,570 across 79 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 284 Memorial Ct Ste BCrystal Lake, IL 60014-6231Phone: (815) 477-8900Fax: (815) 477-7160
Registry dates
- Enumerated
- 2006-11-03
- Last updated
- 2025-10-29
- Certified
- 2025-10-29
Frequently asked questions
- What is Douglas Tomasian's NPI number?
- Douglas Tomasian's National Provider Identifier (NPI) is 1922187756, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Douglas Tomasian's specialty?
- Douglas Tomasian is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Douglas Tomasian located?
- Douglas Tomasian's practice location on file with NPPES is 600 Hart Rd Ste 100, Barrington, IL 60010-2662.
- What is Douglas Tomasian's phone number?
- The practice phone number listed in the NPPES registry for Douglas Tomasian is (815) 477-8900.
- Does Douglas Tomasian accept Medicare?
- Douglas Tomasian is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Douglas Tomasian's NPI active?
- Yes — Douglas Tomasian's NPI (1922187756) is active in the NPPES registry as of the last update on 2025-10-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.