Irena Mulla, M.D.
NPI 1891846911 · Endocrinology, Diabetes & Metabolism Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Irena Mulla, M.D. is a Endocrinology, Diabetes & Metabolism Physician provider in Chicago, IL (NPI 1891846911).
Provider details
- NPI number
- 1891846911
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 036118635 (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
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
173 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 | 142 | $132 |
| Telephone Medical Discussion With Physician, 11-20 Minutes99442 | 17 | $90 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 14 | $174 |
Typical Medicare-allowed amounts for these services range $90–$174 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 28 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Empagliflozinbrand: Jardiance | 114 | 24 |
| Insulin Glargine,hum.rec.anlogbrand: Lantus Solostar | 87 | 28 |
| Metformin Hcl | 82 | 27 |
| Dulaglutidebrand: Trulicity | 61 | — |
| Semaglutidebrand: Ozempic | 60 | 14 |
| Levothyroxine Sodium | 57 | 13 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$358 across 9 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
- 2007-01-16
- Last updated
- 2016-04-06
Frequently asked questions
- What is Irena Mulla's NPI number?
- Irena Mulla's National Provider Identifier (NPI) is 1891846911, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Irena Mulla's specialty?
- Irena Mulla is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Irena Mulla located?
- Irena Mulla's practice location on file with NPPES is 4700 N Marine Dr, Chicago, IL 60640-7972.
- What is Irena Mulla's phone number?
- The practice phone number listed in the NPPES registry for Irena Mulla is (773) 564-5355.
- Does Irena Mulla accept Medicare?
- Irena Mulla is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Irena Mulla's NPI active?
- Yes — Irena Mulla's NPI (1891846911) is active in the NPPES registry as of the last update on 2016-04-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.