RESPONSIVE ID SOLUTIONS
NPI 1255357653
Internal Medicine - Infectious Disease in San Antonio, TX

Q: What is Robert A Zajac MD PA's NPI number?

The NPI number for Robert A Zajac MD PA is 1255357653. It was assigned to this organization in the NPPES registry on July 15, 2006. The provider is doing business as Responsive Id Solutions.

Q: What is Robert A Zajac MD PA's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

Active since July 15, 2006

150 E SONTERRA BLVD, SUITE 170, SAN ANTONIO, TX 78258(210) 481-2800(210) 481-2834 Get Directions Write a Review

NPPES record last updated: September 15, 2015. Verified against the NPPES registry weekly; last sync: July 26, 2026.

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About Responsive Id Solutions NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

RESPONSIVE ID SOLUTIONS (NPI 1255357653) is a healthcare organization registered as an infectious disease in San Antonio, Texas and active in the NPI registry since July 2006. The organization lists Robert A Zajac, President, as its authorized official.

NPPES Registry Identity

NPI1255357653

Entity TypeOrganization

Primary Taxonomy207RI0200X

Legal Business NameROBERT A ZAJAC MD PA

Location Address150 E SONTERRA BLVD, SUITE 170San Antonio, TX 78258-4098

Mailing AddressPo Box 1346San Antonio, TX 78295-1346 · (210) 558-6288 · Fax (210) 558-6289

Phone(210) 481-2800

Fax(210) 481-2834

Organization SubpartNo

Authorized OfficialRobert A ZajacPresident · (210) 558-6288

Enumeration DateJuly 15, 2006

Last NPPES UpdateSeptember 15, 2015

✔ NPI 1255357653 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RI0200X

License✔ Licensed in TX · H3973

Definition

An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.

150 E SONTERRA BLVD, San Antonio, TX 78258

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Other Names 1

Doing Business AsResponsive Id Solutions

Other Identifiers 2

Medicaid183550601TX

Medicare PIN00W932TX

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and more.Insurance ›

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Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

NANCY E BULA

Physical Therapist

150 E SONTERRA BLVD, 300
SAN ANTONIO, TX 78258

Bexar County (210) 489-7220

ROBERT A ZAJAC MD

Internal Medicine (Infectious Disease)

150 E SONTERRA BLVD, SUITE 170
SAN ANTONIO, TX 78258

Bexar County (210) 481-2800

MAGNOLIA WOMEN'S CARE, P.L.L.C.

Obstetrics & Gynecology

150 E SONTERRA BLVD, SUITE 250
SAN ANTONIO, TX 78258

Bexar County (210) 748-7153

ALLISON HUTCHERSON PA-C

Physician Assistant (Medical)

150 E SONTERRA BLVD, STE 170
SAN ANTONIO, TX 78258

Bexar County (210) 481-2800

PHILLIP J TRUEMAN

Physical Therapist

150 E SONTERRA BLVD, 300
SAN ANTONIO, TX 78258

Bexar County (210) 489-7270

BRAD S TOLIN M.D.

Orthopaedic Surgery (Sports Medicine)

150 E SONTERRA BLVD, 300
SAN ANTONIO, TX 78258

Bexar County (210) 489-7240

SAN ANTONIO TX ENDOSCOPY ASC LP

Clinic/Center (Ambulatory Surgical)

150 E SONTERRA BLVD, SUITE 110
SAN ANTONIO, TX 78258

Bexar County (210) 491-9998

RUDY RIVERA

Physician Assistant

150 E SONTERRA BLVD, SUITE 220
SAN ANTONIO, TX 78258

Bexar County (210) 481-6800

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Robert A Zajac MD PA's NPI number?

The NPI number for Robert A Zajac MD PA is 1255357653. It was assigned to this organization in the NPPES registry on July 15, 2006. The provider is doing business as Responsive Id Solutions.

Where is Robert A Zajac MD PA located?

Robert A Zajac MD PA is located at 150 E Sonterra Blvd Suite 170, San Antonio, TX 78258. The listed phone number is (210) 481-2800.

What is Robert A Zajac MD PA's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

What insurance does Robert A Zajac MD PA accept?

Health plans from Ambetter Health, Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and Ambetter from Superior HealthPlan and 3 other insurers list Robert A Zajac MD PA as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Robert A Zajac MD PA was last updated on September 15, 2015. NPI Profile syncs with the weekly NPPES data releases published by CMS.