Cardiologists · Naperville, IL · October 2026
Best Cardiologists in Naperville, IL (October 2026)
Dr. William Stephan ranks first with a score of 88.7: 5.0 stars from 297 Google reviews; 39 years since medical school; accepts Medicare assignment. Dr. Anand Ramanathan ranks second with a score of 88.7: 5.0 stars from 290 Google reviews; 34 years since medical school; accepts Medicare assignment. Dr. Mark Goodwin ranks third with a score of 87.9: 5.0 stars from 193 Google reviews; 42 years since medical school; accepts Medicare assignment.
- 1
William Stephan, MD
5.0 out of 5 · 297 Google reviews
Score 88.7 · 39 years since medical school; accepts Medicare assignment
- 2
Anand Ramanathan, MD
5.0 out of 5 · 290 Google reviews
Score 88.7 · 34 years since medical school; accepts Medicare assignment
- 3
Mark Goodwin, MD
5.0 out of 5 · 193 Google reviews
Score 87.9 · 42 years since medical school; accepts Medicare assignment
- 4
Stanley Clark, MD
5.0 out of 5 · 176 Google reviews
Score 87.7 · 40 years since medical school; accepts Medicare assignment
- 5
Moeen Saleem, MD
4.9 out of 5 · 280 Google reviews
Score 85.9 · 31 years since medical school; accepts Medicare assignment
- 6
Kousik Krishnan, MD
4.9 out of 5 · 231 Google reviews
Score 85.6 · 31 years since medical school; accepts Medicare assignment
- 7
Evans Pappas, MD
4.9 out of 5 · 132 Google reviews
Score 84.8 · 34 years since medical school; accepts Medicare assignment
- 8
Ann Davis, MD
4.8 out of 5 · 139 Google reviews
Score 82.5 · 34 years since medical school; accepts Medicare assignment
- 9
Chris Geannopoulos, MD
4.8 out of 5 · 135 Google reviews
Score 82.5 · 41 years since medical school; accepts Medicare assignment
- 10
Sujith Kalathiveetil, MD
5.0 out of 5 · 56 Google reviews
Score 78.5 · 24 years since medical school; accepts Medicare assignment
The same list as a table
| Rank | Doctor | City | Score | Rating | Reviews | Years |
|---|---|---|---|---|---|---|
| 1 | William Stephan, MD | Naperville | 88.7 | 5.0 | 297 | 39 |
| 2 | Anand Ramanathan, MD | Naperville | 88.7 | 5.0 | 290 | 34 |
| 3 | Mark Goodwin, MD | Naperville | 87.9 | 5.0 | 193 | 42 |
| 4 | Stanley Clark, MD | Naperville | 87.7 | 5.0 | 176 | 40 |
| 5 | Moeen Saleem, MD | Naperville | 85.9 | 4.9 | 280 | 31 |
| 6 | Kousik Krishnan, MD | Naperville | 85.6 | 4.9 | 231 | 31 |
| 7 | Evans Pappas, MD | Naperville | 84.8 | 4.9 | 132 | 34 |
| 8 | Ann Davis, MD | Naperville | 82.5 | 4.8 | 139 | 34 |
| 9 | Chris Geannopoulos, MD | Naperville | 82.5 | 4.8 | 135 | 41 |
| 10 | Sujith Kalathiveetil, MD | Naperville | 78.5 | 5.0 | 56 | 24 |
How we ranked
Ratings are weighted toward independent, third-party verified patient reviews. When a physician has them, 60% of the rating comes from patients surveyed by an independent third party (not chosen by the practice) and 40% from public, anonymous reviews such as Google. Anonymous reviews alone count for less, so a few posts can't carry a physician to the top. The score also weighs years since medical school and accepting Medicare assignment. Every physician here has a verified practice website and at least five patient reviews. No one can pay to change a rank. Read the full method.
Questions
Who is the highest-ranked cardiologist in Naperville, IL?
William Stephan, MD in Naperville, with a BestDocs score of 88.7 (5.0 stars from 297 Google reviews; 39 years since medical school; accepts Medicare assignment).
How many cardiologists in Naperville, IL have online booking?
14 of the 22 ranked cardiologists in Naperville, IL offer online booking on their practice website.
How are these cardiologists ranked?
By the BestDocs score, which is weighted toward independent third-party verified patient reviews: patient rating (50 points; 60% independent verified reviews and 40% anonymous public reviews when both exist), years in practice (31.25) and verified credentials (18.75). Sponsored placements never change rank. The full method is on the methodology page.
Data as of October 2026. Sources: CMS NPPES, CMS Doctors and Clinicians file, Google business listings, practice websites. Ratings are Google ratings, shown as text and not marked up as reviews.