Quick answers
- Does Armando A. San Juan Jr. accept Medicare assignment?
- Yes. Medicare's clinician data says Armando A. San Juan Jr. 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 Armando A. San Juan Jr. see?
- In 2024, CMS data shows 18 Original Medicare patients and 65 services for Armando A. San Juan Jr.. This counts Original Medicare only and measures volume, not quality.
- What is Armando A. San Juan Jr.'s NPI number?
- 1235220518. 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 Armando A. San Juan Jr., 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 | 18 |
|---|---|
| Services billed to Medicare | 65 |
| Different services or procedures | 20 |
| Participating Medicare provider | Yes |
| Average age of these patients | 61 |
Hospitals where Armando A. San Juan Jr. works
Medicare's Facility Affiliation Data lists Armando A. San Juan Jr. 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.
- Elmhurst Memorial HospitalElmhurst, IL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 140200
Practice locations
Addresses where Armando A. San Juan Jr. is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 6; the Medicare profile lists all.
- 130 S Main StLombard, IL 60148
- 133 E Brush Hill Rd, Suite 205Elmhurst, IL 60126 (331) 221‑6930
- 155 E Brush Hill RdElmhurst, IL 60126 (331) 221‑0096
- 177 E Brush Hill RdElmhurst, IL 60126 (630) 646‑6020
- 215 E 1st StDixon, IL 61021 (815) 288‑5531
Group practices
Medicare enrollment lists Armando A. San Juan Jr. as a member of these groups (CMS data updated October 2, 2026).
- Endeavor Health Medical Group3,350 clinicians in the group
- OSF Multi-Specialty Group2,114 clinicians in the group
Specialties
- Obstetrics/Gynecologyprimary
Other OB-GYNs in Illinois
Clinicians with the same Medicare primary specialty in Illinois — not a recommendation.
Other clinicians in Endeavor Health Medical Group
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Rutgers New Jersey Medical School |
| Graduation year | 1996 (30 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1235220518 |
| 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