Sylvia Gladstone Castro, ARNP
Family Nurse Practitioner · Renton, WA
Sylvia Gladstone Castro, ARNP is a family nurse practitioner with a practice address in Renton, Washington, and NPI 1912297219, issued on Apr 8, 2011. Check the license (Washington AP60210183, as entered in NPPES) with the Washington board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Sylvia Gladstone Castro
- Credential
- ARNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- AP60210183 WA
Self-reported in NPPES; status is on the state search - Practice location
- 707 S Grady Way Ste 600, Renton, WA 98057
- Phone
- (206) 823-1004
- Enumerated
- Apr 8, 2011
- Record last updated
- Feb 15, 2023
- Fax
- (206) 309-3319
- Medicaid IDs
- 203390 WA
2143055 WA - Medicare enrollment
- Enrolled (PECOS I20170525001786); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 3,781 in Washington → Look up another NPI →
Also registered at 707 S Grady Way Ste 600
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ngweh Azah, CEOContractor1780307041
- Tyshayna Boggs, NPNurse Practitioner1538723507
- Nhautrey BrownCounselor1417573775
- Ashley Davis, NP-CFamily Nurse Practitioner1902422918
- Petra Eichelsdoerfer, RPH, MS, NDPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1770885089
- Judith IlokaPsychiatric/Mental Health Nurse Practitioner1093446346
Verify Sylvia Gladstone Castro in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Washington board licenses this profession
Search for license AP60210183Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
72% fewer Medicare Part D claims than the average family nurse practitioner in 2024
364 Medicare Part D claims for 40 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. 14 claims were for opioids.
Most prescribed
- Buprenorphine-Naloxone71 claims
- Suboxone27 claims
- Gabapentin25 claims
- Clonidine Hcl21 claims
- Hydroxyzine Pamoate19 claims
- Lorazepam17 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $323.09
19 payments; by number, the most common kind was food and beverage; the largest payer was Orexo US, Inc. The 99,489 providers of this specialty with any payment received $650.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Prime Care PLLCBothell, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sylvia Gladstone Castro among 3,781 family nurse practitioner records in Washington
Sylvia Gladstone Castro, ARNP is one of 3,781 family nurse practitioner records with a practice address in Washington. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 30% of them.
- NPI issued2011 · 30% of these records are older, 68% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 56% of these records are
- Graduated2010 · median 2018 among the 2,116 with a school on file
- Record last updated2023 · 46% 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 Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
62 family nurse practitioner records list a practice address in Renton
They are 62 of the 3,147 NPPES records with a practice address in Renton, and 3,781 family nurse practitioner records in Washington.
All 3,781 in Washington → Every provider in Renton → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Shanedra Davis, NPRenton, WA 980571477825099
- Risa Halford, ARNPRenton, WA 980571104136811
- Bradley Jellerichs, A.R.N.P.Renton, WA 980571841436417
- Christine Jennings, ARNP, FNP-BCRenton, WA 980571942721071
- Patricia Jergens, ARNPRenton, WA 980571891831590
- Elizabeth Kijima, ARNPRenton, WA 980571790055929
- Carolyne KiturRenton, WA 980571548793268
- Margaret Larson, ARNPRenton, WA 980571699788539
Common questions
What is Sylvia Gladstone Castro, ARNP's NPI number?
Sylvia Gladstone Castro, ARNP's National Provider Identifier (NPI) is 1912297219, issued on Apr 8, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Sylvia Gladstone Castro, ARNP located?
The NPPES record lists a practice address at 707 S Grady Way Ste 600, Renton, WA, 98057. Phone: (206) 823-1004. Providers update this record themselves, so call before visiting.
How can I verify Sylvia Gladstone Castro, ARNP's license?
NPPES lists Washington license number AP60210183, as entered by the provider. Search the Washington board that licenses this profession; the NPPES record confirms identity only.
How much does Sylvia Gladstone Castro, ARNP prescribe under Medicare Part D?
In 2024, Sylvia Gladstone Castro, ARNP had 364 Medicare Part D claims for 40 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions 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.
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.