Silvia Castillo Sy, M.D.
Gastroenterology Physician · Mission, TX
Silvia Castillo Sy, M.D. is a gastroenterology physician with a practice address in Mission, Texas, and NPI 1245284801, issued on May 19, 2006. Check the license (Texas M1569, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Silvia Castillo Sy
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- M1569 TX
Self-reported in NPPES; status is on the state search - Practice location
- 910 S Bryan RD Ste 209, Mission, TX 78572
- Phone
- (956) 424-1511
- Enumerated
- May 19, 2006
- Record last updated
- Apr 20, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (956) 424-3575
- Medicaid ID
- 1787905-02 TX
- Medicare enrollment
- Enrolled (PECOS I20051020001061); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 1,478 in Texas → Look up another NPI →
Also registered at 910 S Bryan RD Ste 209
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mayra Derupe, FNPPrimary Care Nurse Practitioner1942783410
Verify Silvia Castillo Sy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license M1569Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.6 times the Medicare Part D claims of the average gastroenterology physician in 2024
2,069 Medicare Part D claims for 606 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 23% of claims.
Most prescribed
- Omeprazole338 claims
- Pantoprazole Sodium306 claims
- Linzess303 claims
- Famotidine208 claims
- Dicyclomine Hcl112 claims
- Peg-3350 And Electrolytes74 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $561.81
23 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,350 providers of this specialty with any payment received $5,015.95 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
- Silvia Castillo SY MdpaMission, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Silvia Castillo Sy among 1,478 gastroenterology physician records in Texas
Silvia Castillo Sy, M.D. is one of 1,478 gastroenterology physician records with a practice address in Texas. 89% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 14% of them.
- NPI issued2006 · 14% of these records are older, 51% newer
- In a Medicare fileYes · 89% of these records are
- In the CMS Doctors and Clinicians fileYes · 79% of these records are
- Graduated1995 · median 2003 among the 1,175 with a school on file
- Record last updated2010 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Texas
There are 1,478 gastroenterology physician records in Texas.
All 1,478 in Texas → Every provider in Mission → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Khizar Ahsan, M.D.Rio Grande City, TX 785821750399077
- Oscar Alvarez, MDHarlingen, TX 785501376565838
- Wayne Green, M.D.Harlingen, TX 785501114906278
- Nicole Grigg Gutierrez, MDHarlingen, TX 785501750516035
- Oral James, M.D.Harlingen, TX 785501235178799
- Owen Maat, MDHarlingen, TX 785501295780609
- Nghia Nguyen, DOHarlingen, TX 785501538725890
- Nolan Perez, MDHarlingen, TX 785501184726986
Common questions
What is Silvia Castillo Sy, M.D.'s NPI number?
Silvia Castillo Sy, M.D.'s National Provider Identifier (NPI) is 1245284801, issued on May 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Silvia Castillo Sy, M.D. located?
The NPPES record lists a practice address at 910 S Bryan RD Ste 209, Mission, TX, 78572. Phone: (956) 424-1511. Providers update this record themselves, so call before visiting.
How can I verify Silvia Castillo Sy, M.D.'s license?
NPPES lists Texas license number M1569, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Silvia Castillo Sy, M.D. prescribe under Medicare Part D?
In 2024, Silvia Castillo Sy, M.D. had 2,069 Medicare Part D claims for 606 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Silvia Castillo Sy, M.D.'s MIPS final score?
The 2023 MIPS final score is 100 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.