NPPES file of Aug 9, 2026

Sydney Joye Decastilhos, FNP, BC

Family Nurse Practitioner · Santa Rosa, CA

Sydney Joye Decastilhos, FNP, BC is a family nurse practitioner with a practice address in Santa Rosa, California, and NPI 1033096011, issued on Aug 20, 2025. Check the license (California 95036650, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1033096011
Name
Sydney Joye Decastilhos
Credential
FNP, BC
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License number
95036650 CA
Self-reported in NPPES; status is on the state search
Practice location
1162 Montgomery Dr FL 2, Santa Rosa, CA 95405
Phone
(707) 890-4100
Enumerated
Aug 20, 2025
Record last updated
Aug 20, 2025
Medicare enrollment
Enrolled (PECOS I20250929002702); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest family nurse practitioner records → All 16,966 in California → Look up another NPI →

Also registered at 1162 Montgomery Dr FL 2

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Rommy MalaebPhysician Assistant1710840418
  2. Gloria MorrowRegistered Dietitian1598126336
  3. Matthew Myers, PAPhysician Assistant1649992181
  4. Kevin NelsonMedical Physician Assistant1730891284
  5. Tabitha Paull, DNP-FNPPrimary Care Nurse Practitioner1598652471

Verify Sydney Joye Decastilhos in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license 95036650    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Providence Medical FoundationSanta Rosa, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Sydney Joye Decastilhos among 16,966 family nurse practitioner records in California

Sydney Joye Decastilhos, FNP, BC is one of 16,966 family nurse practitioner records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2025, is newer than 90% of them.

  • NPI issued2025 · 90% of these records are older, 3% newer
  • In a Medicare fileYes · 67% of these records are
  • In the CMS Doctors and Clinicians fileYes · 40% of these records are
  • Graduated2025 · median 2019 among the 6,793 with a school on file
  • Record last updated2025 · 42% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

170 family nurse practitioner records list a practice address in Santa Rosa

They are 170 of the 6,884 NPPES records with a practice address in Santa Rosa, and 16,966 family nurse practitioner records in California.

All 16,966 in California → Every provider in Santa Rosa → Family Nurse Practitioner nationwide →

The 8 family nurse practitioner records with the nearest ZIP codes

  1. Gina Bey, FNPSanta Rosa, CA 954051699906891
  2. Linda Rae Brown, FNP-BCSanta Rosa, CA 954051831343011
  3. Darien Chandler, F.N.P.Santa Rosa, CA 954051942316567
  4. Tori Crawford, N.P.Santa Rosa, CA 954051659509586
  5. Wendy Curnow, FNPSanta Rosa, CA 954051093193807
  6. Dena Dimond, N.P.Santa Rosa, CA 954051518370519
  7. Jennifer Graff, FNP-BCSanta Rosa, CA 954051053757922
  8. Rhoda Halliday, FNPSanta Rosa, CA 954051205072816

Common questions

What is Sydney Joye Decastilhos, FNP, BC's NPI number?

Sydney Joye Decastilhos, FNP, BC's National Provider Identifier (NPI) is 1033096011, issued on Aug 20, 2025. An NPI identifies a provider in billing; it is not a license.

Where is Sydney Joye Decastilhos, FNP, BC located?

The NPPES record lists a practice address at 1162 Montgomery Dr FL 2, Santa Rosa, CA, 95405. Phone: (707) 890-4100. Providers update this record themselves, so call before visiting.

How can I verify Sydney Joye Decastilhos, FNP, BC's license?

NPPES lists California license number 95036650, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.