Chris Geannopoulos, MD
NPI 1265407076 · Cardiovascular Disease Physician · Naperville, IL
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Chris Geannopoulos, MD is a Cardiovascular Disease Physician provider in Naperville, IL (NPI 1265407076).
Provider details
- NPI number
- 1265407076
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 036077483 (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
20 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
3,848 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 | 691 | $132 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 579 | $120 |
| 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 | 417 | $17 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 297 | $8 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 285 | $15 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 45 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metoprolol Succinate | 811 | 250 |
| Atorvastatin Calcium | 804 | 240 |
| Lisinopril | 402 | 134 |
| Apixabanbrand: Eliquis | 332 | 92 |
| Amlodipine Besylate | 322 | 104 |
| Losartan Potassium | 303 | 100 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$499 across 26 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)
- 25 N Winfield RdSte 300Winfield, IL 60190Phone: (630) 933-8100
Registry dates
- Enumerated
- 2006-02-23
- Last updated
- 2023-08-08
- Certified
- 2023-08-08
Frequently asked questions
- What is Chris Geannopoulos's NPI number?
- Chris Geannopoulos's National Provider Identifier (NPI) is 1265407076, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Chris Geannopoulos's specialty?
- Chris Geannopoulos is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Chris Geannopoulos located?
- Chris Geannopoulos's practice location on file with NPPES is 100 Spalding Dr Ste 400, Naperville, IL 60540-6554.
- What is Chris Geannopoulos's phone number?
- The practice phone number listed in the NPPES registry for Chris Geannopoulos is (630) 718-2660.
- Does Chris Geannopoulos accept Medicare?
- Chris Geannopoulos is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Chris Geannopoulos's NPI active?
- Yes — Chris Geannopoulos's NPI (1265407076) is active in the NPPES registry as of the last update on 2023-08-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.