Dr Luis Angel Reyes Mercado, MD - Medicare Emergency Medicine in Round Rock, TX

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Dr Luis Angel Reyes Mercado, MD is a medicare enrolled "Emergency Medicine" physician in Round Rock, Texas. He went to University Central Del Caribe Escuela De Medicina and graduated in 2005 and has 21 years of diverse experience with area of expertise as Emergency Medicine. He is a member of the group practice Comal Emergency Physicians Pllc, Longhorn Emergency Medical Associates Pa and his current practice location is 300 University Blvd, Round Rock, Texas. You can reach out to his office (for appointments etc.) via phone at (512) 509-0100.

Dr Luis Angel Reyes Mercado is licensed to practice in Texas (license number P4804) 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 1669676979.

Contact Information

Dr Luis Angel Reyes Mercado, MD
300 University Blvd,
Round Rock, TX 78665-1032
(512) 509-0100
(512) 218-6330

Map and Direction




Physician's Profile

Full NameDr Luis Angel Reyes Mercado
GenderMale
SpecialityEmergency Medicine
Experience21 Years
Location300 University Blvd, Round Rock, 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:
  • Dr Luis Angel Reyes Mercado attended and graduated from University Central Del Caribe Escuela De Medicina in 2005
  NPI Data:
  • NPI Number: 1669676979
  • Provider Enumeration Date: 06/12/2007
  • Last Update Date: 06/24/2026
  Medicare PECOS Information:
  • PECOS PAC ID: 4587828439
  • Enrollment ID: I20130726000021

Medical Identifiers

Medical identifiers for Dr Luis Angel Reyes Mercado such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1669676979NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207P00000XEmergency Medicine P4804 (Texas)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
St David's South Austin Medical CenterAustin, TXHospital
Christus Santa Rosa Hospital-san MarcosSan marcos, TXHospital
South Texas Health SystemEdinburg, TXHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Comal Emergency Physicians Pllc690125993675
Longhorn Emergency Medical Associates Pa4486971041144

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 Luis Angel Reyes Mercado allows following entities to bill medicare on his behalf.
Entity NameTexas Medicine Resources, Llp
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1376581900
PECOS PAC ID: 5890688212
Enrollment ID: O20130702000785
Entity NameLonghorn Emergency Medical Associates Pa
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1649669672
PECOS PAC ID: 4486971041
Enrollment ID: O20150320000152
Entity NameTexas Emergency Medicine Group, Llp
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1134774722
PECOS PAC ID: 5092046482
Enrollment ID: O20191016002394
Entity NameEmergency Medicine Services Of Tx, Pllc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1245938729
PECOS PAC ID: 3375909351
Enrollment ID: O20230517001124
Entity NameComal Emergency Physicians Pllc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1588438675
PECOS PAC ID: 6901259936
Enrollment ID: O20240126000022

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 Luis Angel Reyes Mercado 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 Luis Angel Reyes Mercado, MD
Po Box 844658,
Dallas, TX 75284-4658

Ph: (800) 994-0371		Dr Luis Angel Reyes Mercado, MD
300 University Blvd,
Round Rock, TX 78665-1032

Ph: (512) 509-0100

Reviews and Comments


Emergency Medicine Doctors in Round Rock, TX

Brennen J. Beatty, MD
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 300 University Blvd, Round Rock, TX 78665
Phone: 512-509-0100    Fax: 512-218-6330
Clarke Worley Goodman, M.D.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 2400 Round Rock Ave, Round Rock, TX 78681
Phone: 512-341-1000    
Christopher Wallace, M.D.
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 300 University Blvd, Round Rock, TX 78665
Phone: 512-509-0100    Fax: 512-218-6330
Mark Garrison Munns, MD
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 300 University Blvd, Round Rock, TX 78665
Phone: 512-509-0100    
Kristen Faye Walker, M.D.
Emergency Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 3341 Winding River Trl, Round Rock, TX 78681
Phone: 325-260-9002    
Dr. Peter John Richerson, M.D.
Emergency Medicine
Medicare: May Accept Medicare Assignments
Practice Location: 300 University Blvd, Round Rock, TX 78665
Phone: 512-509-0100    
Dr. James Porter Mcdonough Iii, M.D.
Emergency Medicine
Medicare: Medicare Enrolled
Practice Location: 300 University Blvd, Round Rock, TX 78665
Phone: 512-509-0100    

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).

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