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Robert A Zajac MD PA

Internal Medicine·San Antonio, TX· NPI 1255357653 · Enumerated 2006 · 19 years on NPI
Robert A Zajac MD PA is 1 of 920 internal medicine organizations in Texas.
NPI age
19 years
Enumerated 2006-07-15
Primary specialty
Internal Medicine
Practice locations
1
0 secondary on file
Status
Active
No deactivations on record
Authorized official
Zajac
President
Last NPPES update
2015-09-15
Source: monthly bulk 2026-05

How this organization compares

Across 920 active internal medicine providers in Texas.

NPI age
19 years
↑ 2 yr above median
Practice locations
1
0 secondary on file
Subspecialties
0

NPI lifetime · 2006 → 2026

2006-07Enumerated in NPPES
2006 2026

Where they practice

Primary practice location
150 E Sonterra Blvd, Suite 170
San Antonio, TX 782584098
📞 2104812800fax 2104812834
Mailing address
Po Box 1346
San Antonio, TX 782951346
📞 2105586288fax 2105586289

Authorized official

Robert A Zajac, MD
President
📞 2105586288

Individual providers at this organization

16 individual providers on file at this primary practice address.

Specialties

Allopathic & Osteopathic Physicians › Internal Medicine
  • Internal Medicine Primary
    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...
    TX license #H3973 taxonomy 207RI0200X

Identifiers

TypeValueNotes
05 (TX) 183550601

Other names on file (1)

Doing-business-as, former, and alternate names recorded by NPPES.

  • Responsive ID Solutions
    Type code 3 recorded 2006-09-20

Practice context

Multi-provider organization. 16 individual providers on file at this primary address.

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How to verify this organization

  1. Confirm the NPI on NPPES.The CMS registry is the system of record. Open NPPES →
  2. Verify the organization is in good standing.Cross-check with the state's business registration and any applicable licensing boards.
  3. Confirm payer enrollment if billing.NPI presence does not guarantee active enrollment with Medicare, Medicaid, or commercial payers.

Related

Internal Medicine organizations in Texas
→ Texas hub
About this specialty
→ Specialty guide