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

Robert a Zajac MD PA

Organization Infectious Disease Physician · NPI 1255357653

Robert a Zajac MD PA is an Infectious Disease Physician in San Antonio, Texas. Licensed in Texas. Registered with an NPI since 2006.

Licensed in
TX
In the registry since
2006
What do these letters mean?
PA — Professional association
A form of business registration, not a clinical qualification.

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Practice location Address checks out

150 E Sonterra Blvd Ste 170
San Antonio, TX 78258-4098
Phone: (210) 481-2800
Fax: (210) 481-2834
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Infectious Disease Physician (primary) Taxonomy 207RI0200X · Licence H3973 (TX)

Record details

NPI number1255357653
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Robert Zajac — President · (210) 558-6288
Other names Responsive Id Solutions
NPI enumeratedJuly 15, 2006
Last updated in NPPESSeptember 15, 2015
Mailing addressPo Box 1346, San Antonio, TX 78295-1346

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