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

Mary Katherine Hearne, APN

Individual provider Nurse Practitioner · NPI 1639609852

Mary Katherine Hearne, APN is a Nurse Practitioner in San Marcos, Texas. Qualified in 2016, 10 years ago. Practices with St Davids Heart and Vascular PLLC, a 198-clinician group and accepts Medicare assignment. Licensed in Texas.

Years since qualifying
10
Licensed in
TX
In the registry since
2017
What do these letters mean?
APN — Advanced Practice Nurse
The umbrella title some states use for nurse practitioners and other advanced practice nurses.

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Practice location Address checks out

1251 Sadler East Dr Bldg J Ste 2100
San Marcos, TX 78666
Phone: (512) 396-5603
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Nurse Practitioner (primary) Taxonomy 363L00000X · Licence AP132131 (TX)

Record details

NPI number1639609852
Entity typeIndividual (Type 1)
GenderFemale
Credentials APN
Sole proprietorNo
NPI enumeratedJune 20, 2017
Last updated in NPPESJanuary 13, 2026
Certification dateJanuary 13, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2016 (10 years in practice)
Group practice St Davids Heart And Vascular Pllc — 198 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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