Dr. Mark Muir M.D.
About this NPIWhat this record shows.
NPI 1134332422 is registered to Dr. Mark Muir M.D., a Surgical Critical Care Physician practising at 4502 Medical Dr in San Antonio, Texas. Surgical Critical Care Physician is a recognised medical specialty under the National Uniform Claim Committee (NUCC) taxonomy. Dr. Mark Muir M.D. has been enumerated in the National Provider Identifier (NPI) registry since 2007.
Beyond the registryWhat this record adds.
It is enrolled in Medicare, linking to 1 PECOS enrollment record (with a public Medicare Enrollment ID) sourced from CMS, which the NPPES registry does not list. Within the directory it is one of 125 Surgical Critical Care Physician providers on file in Texas.
Source: CMS NPPES and PECOS public files. snapshot, refreshed monthly.
Your brand here.
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
- I20130808000840General 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 Dr. Mark Muir M.D. accepts. To confirm in-network status with your specific health plan, contact Dr. Mark Muir M.D. directly at (210) 358-4000.
Frequently asked
Yes. NPI 1134332422 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Surgical Critical Care Physician 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 (210) 358-4000.
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. Dr. Mark Muir M.D. is a Type-1 individual NPI.
As of the latest monthly CMS NPPES snapshot, 125 Surgical Critical Care Physician providers are registered in Texas, and Dr. Mark Muir M.D. is one of them. The figure refreshes each month from the federal source.