Quick answers
- Does Ravi K. Sundaram accept Medicare assignment?
- Yes. Medicare's clinician data says Ravi K. Sundaram accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Ravi K. Sundaram see?
- In 2024, CMS data shows 356 Original Medicare patients and 857 services for Ravi K. Sundaram. This counts Original Medicare only and measures volume, not quality.
- What is Ravi K. Sundaram's NPI number?
- 1811040595. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Ravi K. Sundaram, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 356 |
|---|---|
| Services billed to Medicare | 857 |
| Different services or procedures | 31 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)186 services
- Critical care, first 30-74 minutes (99291)113 services
- Test to measure expiratory airflow and volume (94010)92 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)87 services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)78 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Arthritis65%
- Diabetes50%
- COPD50%
- Ischemic heart disease49%
Hospitals where Ravi K. Sundaram works
Medicare's Facility Affiliation Data lists Ravi K. Sundaram at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Franciscan Health Olympia & Chicago HeightsOlympia Fields, IL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 140172
- Ingalls Memorial HospitalHarvey, IL · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 140191
Practice locations
Addresses where Ravi K. Sundaram is enrolled with Medicare (CMS data updated October 2, 2026).
- 20201 S Crawford Ave, Franciscan St James HealthOlympia Fields, IL 60461 (708) 747‑4000
- 20303 Crawford Ave, Suite 120Olympia Fields, IL 60461 (708) 481‑5500
- 20303 S Crawford Ave, Suite 120Olympia Fields, IL 60461 (708) 481‑5500
- 355 Ridge AveEvanston, IL 60202 (847) 316‑4000
Group practices
Medicare enrollment lists Ravi K. Sundaram as a member of these groups (CMS data updated October 2, 2026).
- Prime Healthcare Illinois Medical Group LLC322 clinicians in the group
- Specialty Physicians of Illinois LLC102 clinicians in the group
- Critical Care Physicians of Illinois LLC38 clinicians in the group
Specialties
Other pulmonologists in Illinois
Clinicians with the same Medicare primary specialty in Illinois — not a recommendation.
Other clinicians in Prime Healthcare Illinois Medical Group LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | At Still University Of Health Sciences, College Of Osteo Med, Kirksville |
| Graduation year | 1999 (27 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1811040595 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians