Quick answers
- Does Oscar M. Zavala accept Medicare assignment?
- Yes. Medicare's clinician data says Oscar M. Zavala 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 Oscar M. Zavala see?
- In 2024, CMS data shows 168 Original Medicare patients and 258 services for Oscar M. Zavala. This counts Original Medicare only and measures volume, not quality.
- What is Oscar M. Zavala's NPI number?
- 1811355316. 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 Oscar M. Zavala, 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 | 168 |
|---|---|
| Services billed to Medicare | 258 |
| Different services or procedures | 37 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Anesthesia for nerve destruction procedures on spine or spinal cord of lower back accessed through skin using imaging guidance (01940)38 services
- Anesthesia for nerve block and injection procedure, prone position (01992)29 services
- Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)16 services
- Anesthesia for other procedure on skin of arms, legs, and front body (00400)14 services
- Anesthesia for other procedure on large bowel using an endoscope (00811)14 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 cholesterol73%
- Arthritis68%
- Diabetes43%
- Ischemic heart disease38%
- Anxiety33%
Hospitals where Oscar M. Zavala works
Medicare's Facility Affiliation Data lists Oscar M. Zavala 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.
- Sullivan County Community HospitalSullivan, IN · Critical Access Hospital · Emergency services: listed by Medicare · CCN 151327
Practice locations
Addresses where Oscar M. Zavala is enrolled with Medicare (CMS data updated October 2, 2026).
- 2200 N Section StSullivan, IN 47882 (812) 268‑4311
Group practices
Medicare enrollment lists Oscar M. Zavala as a member of this group (CMS data updated October 2, 2026).
- Sullivan County Community Hospital45 clinicians in the group
Specialties
Find other clinicians: Certified Registered Nurse Anesthetist (CRNA), Indiana →
Other nurse anesthetists in Indiana
Clinicians with the same Medicare primary specialty in Indiana — not a recommendation.
Other clinicians in Sullivan County Community Hospital
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | CNA |
|---|---|
| Graduation year | 2016 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1811355316 |
| 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