Guillermo D Marquez, MD - Medicare General Surgery in Mission, TX

Guillermo D Marquez, MD is a medicare enrolled "Surgery" physician in Mission, Texas. He graduated from medical school in 1988 and has 36 years of diverse experience with area of expertise as General Surgery. He is a member of the group practice Rgv Surgical Associates, Pllc and his current practice location is 910 S Bryan Rd, Ste 202, Mission, Texas. You can reach out to his office (for appointments etc.) via phone at (956) 682-6126.

Guillermo D Marquez is licensed to practice in Texas (license number K1544) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1861454563.

Contact Information

Guillermo D Marquez, MD
910 S Bryan Rd, Ste 202,
Mission, TX 78572-6659
(956) 682-6126
(956) 580-0464

Map and Direction




Physician's Profile

Full NameGuillermo D Marquez
GenderMale
SpecialityGeneral Surgery
Experience36 Years
Location910 S Bryan Rd, Mission, Texas
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Guillermo D Marquez graduated from medical school in 1988
  NPI Data:
  • NPI Number: 1861454563
  • Provider Enumeration Date: 04/06/2006
  • Last Update Date: 03/05/2019
  Medicare PECOS Information:
  • PECOS PAC ID: 1850425570
  • Enrollment ID: I20100817001184

Medical Identifiers

Medical identifiers for Guillermo D Marquez such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1861454563NPI-NPPES
030586401MedicaidTX

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
208600000XSurgery K1544 (Texas)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Mission Regional Medical CenterMission, TXHospital
Doctors Hospital At RenaissanceEdinburg, TXHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Rgv Surgical Associates, Pllc73153771573

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. Guillermo D Marquez allows following entities to bill medicare on his behalf.
Entity NameRgv Surgical Associates, Pllc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1164055166
PECOS PAC ID: 7315377157
Enrollment ID: O20200420001182

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. Guillermo D Marquez 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
Guillermo D Marquez, MD
910 S Bryan Rd, Ste 202,
Mission, TX 78572-6659

Ph: (956) 682-6126
Guillermo D Marquez, MD
910 S Bryan Rd, Ste 202,
Mission, TX 78572-6659

Ph: (956) 682-6126

Reviews and Comments


Surgery Doctors in Mission, TX

Jesus Eleazar Villarreal, MD.
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Medicare: Accepting Medicare Assignments
Practice Location: 910 S Bryan Rd Ste 202, Mission, TX 78572
Phone: 956-682-6126    Fax: 956-580-0464
Arturo Torices Dardon, M.D.
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Practice Location: 900 S Bryan Rd, Mission, TX 78572
Phone: 956-323-9000    
Dr. Neysan Bayat, M.D.
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Medicare: Accepting Medicare Assignments
Practice Location: 2009 E Griffin Pkwy, Mission, TX 78572
Phone: 956-600-7747    Fax: 866-221-2183

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.