Guillermo Marquez M.D.
About this NPIWhat this record shows.
NPI 1861454563 is registered to Guillermo Marquez M.D., a Surgery practising at 910 S Bryan Rd, Ste 202 in Mission, Texas. Surgery is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Guillermo Marquez M.D. has been enumerated in the National Provider Identifier (NPI) registry since 2006.
Secondary identifiers
Additional identifiers this provider has registered with NPPES. Used by medical billers, credentialers, and insurance verifiers to cross-reference claims and enrollments.
Medicaid
Source: NPPES public registry.
Medicare enrollment
This provider holds a Medicare enrollment on file with the Provider Enrollment, Chain and Ownership System (PECOS). Each enrollment carries a public Medicare Enrollment ID (ENRLMT_ID) used by billers and intermediaries.
Practitioner
- I20100817001184General SurgeryTX
Source: CMS PECOS public enrollment file.
Insurance & acceptsHow to confirm coverage.
The National Plan and Provider Enumeration System (NPPES) registry does not include commercial insurance network data, so we cannot show which plans Guillermo Marquez M.D. accepts. To confirm in-network status with your specific health plan, contact Guillermo Marquez M.D. directly at (956) 682-6126.
Frequently asked
Yes. NPI 1861454563 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Surgery is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy.
The CMS NPPES Public Registry at npiregistry.cms.hhs.gov is the authoritative source. FindMyNPI mirrors this dataset and refreshes monthly. For real-time verification, you can also call the provider's office at (956) 682-6126.
An individual healthcare provider has a single Type-1 NPI for life. Organisations can hold separate Type-2 NPIs per location, specialty, or sub-entity. Guillermo Marquez M.D. is a Type-1 individual NPI.