Dr Silvia Castillo Sy, MD - Medicare Gastroenterology in Mission, TX

Dr Silvia Castillo Sy, MD is a medicare enrolled "Internal Medicine - Gastroenterology" physician in Mission, Texas. She graduated from medical school in 1995 and has 29 years of diverse experience with area of expertise as Gastroenterology. She is a member of the group practice Silvia Castillo Sy Mdpa and her current practice location is 910 S Bryan Rd Ste 209, Mission, Texas. You can reach out to her office (for appointments etc.) via phone at (956) 424-1511.

Dr Silvia Castillo Sy is licensed to practice in Texas (license number M1569) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1245284801.

Contact Information

Dr Silvia Castillo Sy, MD
910 S Bryan Rd Ste 209,
Mission, TX 78572-6659
(956) 424-1511
(956) 424-3575

Map and Direction




Physician's Profile

Full NameDr Silvia Castillo Sy
GenderFemale
SpecialityGastroenterology
Experience29 Years
Location910 S Bryan Rd Ste 209, Mission, Texas
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Silvia Castillo Sy graduated from medical school in 1995
  NPI Data:
  • NPI Number: 1245284801
  • Provider Enumeration Date: 05/19/2006
  • Last Update Date: 04/20/2010
  Medicare PECOS Information:
  • PECOS PAC ID: 7113960972
  • Enrollment ID: I20051020001061

Medical Identifiers

Medical identifiers for Dr Silvia Castillo Sy such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1245284801NPI-NPPES
1787905-02MedicaidTX

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RG0100XInternal Medicine - Gastroenterology M1569 (Texas)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Mission Regional Medical CenterMission, TXHospital
Rio Grande Regional HospitalMcallen, TXHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Silvia Castillo Sy Mdpa05473155903

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Dr Silvia Castillo Sy allows following entities to bill medicare on her behalf.
Entity NameSilvia Castillo Sy Mdpa
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1962631143
PECOS PAC ID: 0547315590
Enrollment ID: O20090827000456
Entity NameTexas Gastroenterology Institute Pa
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1194020453
PECOS PAC ID: 9931370590
Enrollment ID: O20110913000057

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Dr Silvia Castillo Sy is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Dr Silvia Castillo Sy, MD
910 S Bryan Rd Ste 209,
Mission, TX 78572-6659

Ph: (956) 424-1511
Dr Silvia Castillo Sy, MD
910 S Bryan Rd Ste 209,
Mission, TX 78572-6659

Ph: (956) 424-1511

Reviews and Comments


Internal Medicine Doctors in Mission, TX

Dr. Harold J Pean, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 909 Business Park Dr Ste 6, Mission, TX 78572
Phone: 956-519-0770    Fax: 956-519-0718
Dr. Rolando Hinojosa, M.D.
Gastroenterology
Medicare: Medicare Enrolled
Practice Location: 2112 E Griffin Pkwy, Mission, TX 78572
Phone: 956-581-6366    Fax: 956-519-6638
Amanda Noemi Cantu, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 1112 E Griffin Pkwy Ste D, Mission, TX 78572
Phone: 956-603-1557    Fax: 956-800-6369
Nelson Rafael Kalaf, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 2023 E Griffin Pkwy, Mission, TX 78572
Phone: 956-585-2525    Fax: 956-585-0225
Carlos C Vela, M.D.
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 3002 Santa Alejandra, Mission, TX 78572
Phone: 956-566-3860    
Robbie L Martin, MD
Gastroenterology
Medicare: Not Enrolled in Medicare
Practice Location: 301 N Shary Rd, Lot 133, Mission, TX 78572
Phone: 303-482-2723    

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.