Irina Domjan, M.D.
NPI 1578771002 · Internal Medicine Physician · Hinsdale, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Irina Domjan, M.D. is a Internal Medicine Physician provider in Hinsdale, IL (NPI 1578771002).
Provider details
- NPI number
- 1578771002
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 036117831 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
596 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 297 | $127 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 57 | $9 |
| Face-To-Face Behavioral Counseling for Obesity, 15 MinutesG0447 | 56 | $26 |
| Insulin Measurement, Total83525 | 31 | $11 |
| Cyanocobalamin (vitamin B-12) Level82607 | 29 | $14 |
| Vitamin D-3 Level82306 | 22 | $27 |
| Blood Glucose (sugar) Level |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 38 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metformin Hclbrand: Metformin Hcl Er | 267 | 93 |
| Semaglutidebrand: Ozempic | 152 | 41 |
| Atorvastatin Calcium | 109 | 42 |
| Tirzepatidebrand: Mounjaro | 109 | 25 |
| Levothyroxine Sodium | 107 | 43 |
| Rosuvastatin Calcium | 87 | 42 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$902 across 27 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
Registry dates
- Enumerated
- 2007-05-18
- Last updated
- 2023-08-07
- Certified
- 2023-08-07
Frequently asked questions
- What is Irina Domjan's NPI number?
- Irina Domjan's National Provider Identifier (NPI) is 1578771002, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Irina Domjan's specialty?
- Irina Domjan is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Irina Domjan located?
- Irina Domjan's practice location on file with NPPES is 40 S Clay St Ste 210e, Hinsdale, IL 60521-3287.
- What is Irina Domjan's phone number?
- The practice phone number listed in the NPPES registry for Irina Domjan is (630) 323-3540.
- Does Irina Domjan accept Medicare?
- Irina Domjan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Irina Domjan's NPI active?
- Yes — Irina Domjan's NPI (1578771002) is active in the NPPES registry as of the last update on 2023-08-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.