Quick answers
- Does Sharlene Joyce S. De Castro accept Medicare assignment?
- Yes. Medicare's clinician data says Sharlene Joyce S. De Castro 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 Sharlene Joyce S. De Castro see?
- In 2024, CMS data shows 116 Original Medicare patients and 1,486 services for Sharlene Joyce S. De Castro. This counts Original Medicare only and measures volume, not quality.
- What is Sharlene Joyce S. De Castro's NPI number?
- 1750019824. 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 Sharlene Joyce S. De Castro, 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 | 116 |
|---|---|
| Services billed to Medicare | 1,486 |
| Different services or procedures | 9 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more (99308)715 services
- Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes (99309)623 services
- Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes (99305)74 services
- Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more (99306)31 services
- Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month (99490)24 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%
- Depression71%
- Arthritis66%
- Anxiety62%
- Diabetes58%
Practice locations
Addresses where Sharlene Joyce S. De Castro is enrolled with Medicare (CMS data updated October 2, 2026).
- 3780 Massachusetts AveLa Mesa, CA 91941 (619) 465‑1313
Group practices
Medicare enrollment lists Sharlene Joyce S. De Castro as a member of this group (CMS data updated October 2, 2026).
- Omar Osman Practice, LLC48 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in La Mesa
Clinicians with the same Medicare primary specialty in La Mesa, CA — not a recommendation.
Other clinicians in Omar Osman Practice, LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2022 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1750019824 |
| 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