Quick answers
- Does Oscar A. Cruz accept Medicare assignment?
- Yes. Medicare's clinician data says Oscar A. Cruz 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 A. Cruz see?
- In 2024, CMS data shows 26 Original Medicare patients and 55 services for Oscar A. Cruz. This counts Original Medicare only and measures volume, not quality.
- What is Oscar A. Cruz's NPI number?
- 1801816236. 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 A. Cruz, 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 | 26 |
|---|---|
| Services billed to Medicare | 55 |
| Different services or procedures | 13 |
| Participating Medicare provider | Yes |
| Average age of these patients | 71 |
Most frequent services
- Exam to measure eye deviation and range of motion (92060)25 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 pressure73%
- High cholesterol50%
- Arthritis46%
Hospitals where Oscar A. Cruz works
Medicare's Facility Affiliation Data lists Oscar A. Cruz 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.
- SSM Health Saint Louis University HospitalSaint Louis, MO · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 260105
Practice locations
Addresses where Oscar A. Cruz is enrolled with Medicare (CMS data updated October 2, 2026).
- 1465 S Grand BlvdSaint Louis, MO 63104 (314) 577‑5641
Group practices
Medicare enrollment lists Oscar A. Cruz as a member of this group (CMS data updated October 2, 2026).
- SSM Health Care Group940 clinicians in the group
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Saint Louis
Clinicians with the same Medicare primary specialty in Saint Louis, MO — not a recommendation.
Other clinicians in SSM Health Care Group
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Louisiana State University School Of Medicine In New Orleans |
| Graduation year | 1987 (39 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1801816236 |
| 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