Megan Kosirog
NPI 1528599560 · Internal Medicine Physician · Glenview, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Megan Kosirog is a Internal Medicine Physician provider in Glenview, IL (NPI 1528599560).
Provider details
- NPI number
- 1528599560
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
9 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
991 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 | 405 | $135 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 161 | $139 |
| 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 | 144 | $17 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 87 | $193 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Tracing93005 | 53 | $7 |
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 |
|---|---|---|
| Atorvastatin Calcium | 252 | 74 |
| Losartan Potassium | 185 | 54 |
| Rosuvastatin Calcium | 163 | 57 |
| Levothyroxine Sodium | 142 | 41 |
| Amlodipine Besylate | 128 | 43 |
| Hydrochlorothiazide | 84 | 30 |
| Omeprazole |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$174 across 1 record (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)
- 251 E Huron StNorthwestern Memorial HospitalChicago, IL 60611-2908Phone: (312) 926-2000
Registry dates
- Enumerated
- 2017-03-22
- Last updated
- 2020-09-22
- Certified
- 2020-09-22
Frequently asked questions
- What is Megan Kosirog's NPI number?
- Megan Kosirog's National Provider Identifier (NPI) is 1528599560, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Megan Kosirog's specialty?
- Megan Kosirog is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Megan Kosirog located?
- Megan Kosirog's practice location on file with NPPES is 2701 Patriot Blvd, Glenview, IL 60026-8039.
- What is Megan Kosirog's phone number?
- The practice phone number listed in the NPPES registry for Megan Kosirog is (847) 535-7157.
- Does Megan Kosirog accept Medicare?
- Megan Kosirog is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Megan Kosirog's NPI active?
- Yes — Megan Kosirog's NPI (1528599560) is active in the NPPES registry as of the last update on 2020-09-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.