Quick answers
- Does Margarita P. Schneider accept Medicare assignment?
- Yes. Medicare's clinician data says Margarita P. Schneider 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 Margarita P. Schneider see?
- In 2024, CMS data shows 58 Original Medicare patients and 209 services for Margarita P. Schneider. This counts Original Medicare only and measures volume, not quality.
- What is Margarita P. Schneider's NPI number?
- 1821299520. 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 Margarita P. Schneider, 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 | 58 |
|---|---|
| Services billed to Medicare | 209 |
| Different services or procedures | 26 |
| Participating Medicare provider | Yes |
| Average age of these patients | 68 |
Most frequent services
- Insertion of needle into vein for collection of blood sample (36415)102 services
- Sarscov2 vac 50 mcg/0.5ml im (91322)17 services
- Admn sarscov2 vacc 1 dose (90480)15 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 cholesterol75%
- High blood pressure72%
- Diabetes41%
- Chronic kidney disease33%
- Arthritis22%
- Osteoporosis19%
Practice locations
Addresses where Margarita P. Schneider is enrolled with Medicare (CMS data updated October 2, 2026).
- 4004 Beyer BlvdSan Ysidro, CA 92173 (619) 428‑4463
Group practices
Medicare enrollment lists Margarita P. Schneider as a member of this group (CMS data updated October 2, 2026).
- Centro de Salud de la Comunidad de San Ysidro, Inc.297 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in San Ysidro
Clinicians with the same Medicare primary specialty in San Ysidro, CA — not a recommendation.
Other clinicians in Centro de Salud de la Comunidad de San Ysidro, Inc.
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Boston University School Of Medicine |
| Graduation year | 1993 (33 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1821299520 |
| 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
- 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