Quick answers
- Does Lourdes C. Isarraras accept Medicare assignment?
- Yes. Medicare's clinician data says Lourdes C. Isarraras 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 Lourdes C. Isarraras see?
- In 2024, CMS data shows 111 Original Medicare patients and 1,684 services for Lourdes C. Isarraras. This counts Original Medicare only and measures volume, not quality.
- What is Lourdes C. Isarraras's NPI number?
- 1811410145. 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 Lourdes C. Isarraras, 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 | 111 |
|---|---|
| Services billed to Medicare | 1,684 |
| Different services or procedures | 11 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes (99309)1,363 services
- Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more (99308)132 services
- Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes (99310)81 services
- Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 10 minutes (99307)39 services
- Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit (G0438)26 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%
- Alzheimer's disease or dementia50%
- Depression45%
- Diabetes42%
- Arthritis41%
Hospitals where Lourdes C. Isarraras works
Medicare's Facility Affiliation Data lists Lourdes C. Isarraras 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.
- Stanford Health CareStanford, CA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 050441
Practice locations
Addresses where Lourdes C. Isarraras is enrolled with Medicare (CMS data updated October 2, 2026).
- 1002 W Fremont AveSunnyvale, CA 94087 (408) 739‑2383
Group practices
Medicare enrollment lists Lourdes C. Isarraras as a member of this group (CMS data updated October 2, 2026).
- California Post-Acute Medical Group 1 Inc2 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Sunnyvale
Clinicians with the same Medicare primary specialty in Sunnyvale, CA — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2017 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1811410145 |
| 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