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

Martha L. Flagg, NP

Individual provider Acute Care Nurse Practitioner · NPI 1689908832

Martha L. Flagg, NP is a Nurse Practitioner in San Antonio, Texas. Qualified in 1992, 34 years ago. Practices with Usacs Integrated Acute Care Services of Texas, PLLC, a 400-clinician group and accepts Medicare assignment. Licensed in Texas.

Years since qualifying
34
Licensed in
TX
In the registry since
2009
What do these letters mean?
NP — Nurse Practitioner
An advanced practice nurse who can diagnose, treat and in most states prescribe.

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Practice location Address checks out

4330 Medical Dr Ste 500
San Antonio, TX 78229-3342
Phone: (210) 576-5306
Fax: (210) 694-0645
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Acute Care Nurse Practitioner (primary) Taxonomy 363LA2100X · Licence AP118220 (TX)

Record details

NPI number1689908832
Entity typeIndividual (Type 1)
GenderFemale
Credentials NP
Sole proprietorNo
NPI enumeratedSeptember 21, 2009
Last updated in NPPESJuly 15, 2015

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 1992 (34 years in practice)
Group practice Usacs Integrated Acute Care Services Of Texas, Pllc — 400 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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