Sylvia Castro, MD
NPI 1609439793 · Family Medicine Physician · Modesto, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sylvia Castro, MD is a Family Medicine Physician provider in Modesto, CA (NPI 1609439793).
Provider details
- NPI number
- 1609439793
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
7 yrs in NPPES registry
- Profile completeness33% of score
83% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 29 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Losartan Potassium | 123 | 32 |
| Atorvastatin Calcium | 91 | 41 |
| Metformin Hcl | 51 | 23 |
| Levothyroxine Sodium | 38 | 13 |
| Semaglutidebrand: Ozempic | 36 | — |
| Fluticasone Propionate | 31 | 12 |
| Amlodipine Besylate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$15 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2019-04-15
- Last updated
- 2022-06-29
- Certified
- 2022-06-29
Frequently asked questions
- What is Sylvia Castro's NPI number?
- Sylvia Castro's National Provider Identifier (NPI) is 1609439793, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sylvia Castro's specialty?
- Sylvia Castro is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Sylvia Castro located?
- Sylvia Castro's practice location on file with NPPES is 1317 Oakdale Rd Ste 440, Modesto, CA 95355-3364.
- What is Sylvia Castro's phone number?
- The practice phone number listed in the NPPES registry for Sylvia Castro is (209) 522-3362.
- Does Sylvia Castro accept Medicare?
- Sylvia Castro is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sylvia Castro's NPI active?
- Yes — Sylvia Castro's NPI (1609439793) is active in the NPPES registry as of the last update on 2022-06-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.