Jennifer Kassir, M.D.
NPI 1528214715 · Internal Medicine Physician · Lisle, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jennifer Kassir, M.D. is a Internal Medicine Physician provider in Lisle, IL (NPI 1528214715).
Provider details
- NPI number
- 1528214715
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 036120590 (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 tenure28% of score
17 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
3,122 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 | 511 | $131 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 447 | $9 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 262 | $133 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 252 | $10 |
| 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 | 205 | $17 |
| Blood Test, Lipids (cholesterol and Triglycerides) |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 68 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 397 | 109 |
| Losartan Potassium | 279 | 87 |
| Levothyroxine Sodium | 271 | 79 |
| Rosuvastatin Calcium | 215 | 75 |
| Amlodipine Besylate | 211 | 63 |
| Metoprolol Succinate | 157 | 48 |
| Lisinopril |
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-08-07
- Last updated
- 2022-06-15
- Certified
- 2022-06-15
Frequently asked questions
- What is Jennifer Kassir's NPI number?
- Jennifer Kassir's National Provider Identifier (NPI) is 1528214715, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jennifer Kassir's specialty?
- Jennifer Kassir is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jennifer Kassir located?
- Jennifer Kassir's practice location on file with NPPES is 430 Warrenville Rd, Lisle, IL 60532-1348.
- What is Jennifer Kassir's phone number?
- The practice phone number listed in the NPPES registry for Jennifer Kassir is (630) 432-6180.
- Does Jennifer Kassir accept Medicare?
- Jennifer Kassir is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jennifer Kassir's NPI active?
- Yes — Jennifer Kassir's NPI (1528214715) is active in the NPPES registry as of the last update on 2022-06-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.