Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Drew Walsh MD PLLC

Organization Critical Care Medicine (Internal Medicine) Physician · NPI 1821746355

Drew Walsh MD PLLC is a Critical Care Medicine (Internal Medicine) Physician in San Marcos, Texas. Works from 4 locations. Registered with an NPI since 2022.

In the registry since
2022
Specialties on file
2
What do these letters mean?
PLLC — Professional limited liability company
A form of business registration, not a clinical qualification.

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Practice location Address checks out

1301 Wonder World Dr
San Marcos, TX 78666-7533
Phone: (210) 600-5864
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (3)

  • 600 N Union Ave, New Braunfels, TX 78130-4194 — (210) 600-5864
  • 1445 Hanz Dr, New Braunfels, TX 78130-2567 — (830) 627-7600
  • 8715 Village Dr Ste 612, San Antonio, TX 78217-5407 — (210) 600-5864

Specialties & licences

Pulmonary Disease Physician (primary) Taxonomy 207RP1001X
Critical Care Medicine (Internal Medicine) Physician Taxonomy 207RC0200X

Record details

NPI number1821746355
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Andrew Walsh — Managing Director · (210) 602-2862
NPI enumeratedMarch 14, 2022
Last updated in NPPESFebruary 13, 2024
Certification dateFebruary 13, 2024
Mailing addressPo Box 128, Bellaire, TX 77402-0128

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