Quick answers
- Does Olivia J. Koukoularis accept Medicare assignment?
- Yes. Medicare's clinician data says Olivia J. Koukoularis 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 Olivia J. Koukoularis see?
- In 2024, CMS data shows 314 Original Medicare patients and 338 services for Olivia J. Koukoularis. This counts Original Medicare only and measures volume, not quality.
- What is Olivia J. Koukoularis's NPI number?
- 1952704561. 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 Olivia J. Koukoularis, 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 | 314 |
|---|---|
| Services billed to Medicare | 338 |
| Different services or procedures | 6 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)226 services
- Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)105 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%
- Anxiety52%
- Arthritis51%
- Heart failure49%
- COPD47%
Hospitals where Olivia J. Koukoularis works
Medicare's Facility Affiliation Data lists Olivia J. Koukoularis 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.
- Day Kimball HospitalPutnam, CT · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 070003
- William W Backus HospitalNorwich, CT · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 070024
- Windham Community Memorial HospitalWillimantic, CT · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 070021
Practice locations
Addresses where Olivia J. Koukoularis is enrolled with Medicare (CMS data updated October 2, 2026).
- 326 Washington StNorwich, CT 06360 (860) 889‑8331
Group practices
Medicare enrollment lists Olivia J. Koukoularis as a member of this group (CMS data updated October 2, 2026).
- The William W Backus Hospital249 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Norwich
Clinicians with the same Medicare primary specialty in Norwich, CT — not a recommendation.
Other clinicians in The William W Backus Hospital
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Graduation year | 2014 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1952704561 |
| 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