NPI age
11 years
Enumerated 2015-05-05
● Active
Type 1 · Individual
Mark Porter, M.D.
Porter is 1 of 16 pediatrics providers in San Antonio and 1 of 152 in Texas.
Primary specialty
Pediatrics
Plus 2 subspecialties
Licensed in
TX, MD
2 states
Status
Active
No deactivations on record
Last NPPES update
2023-11-14
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 152 active pediatrics providers in Texas.
NPI age
11 years
↓ 6 yr below median (17 yr)
State licenses
2 states
Top 82% — 17% of peers are multi-state
Subspecialties
1
In the 49% of peers with subspecialties
NPI lifetime · 2015 → 2026
2015-05Enumerated in NPPES
2015
2026
Where they practice
Practice location
315 N San Saba Ste 1135
San Antonio, TX 782073255
Mailing address
315 N San Saba Ste 1135
San Antonio, TX 782073255
Additional practice locations
2 secondary locations on file with NPPES.
Location 2
200 N Wolfe St
Baltimore, MD 212870011
Location 3
333 N Santa Rosa
San Antonio, TX 782073108
Specialties
-
Pediatrics PrimaryA pediatrician who provides expert care to infants, children and adolescents who have diseases that result from an abnormality in the endocrine glands (glands which secrete hormones). These diseases include diabetes mellitus, growth...
-
PediatricsA pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment...
Practice context
Part of a multi-provider practice. 3 other active providers share this practice address in NPPES.
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- Confirm the NPI on NPPES.The CMS registry is the system of record. Open NPPES →
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