Robert A. Marciniak, MD
Medical Oncology Physician · Oncologist in San Antonio, TX
Provider details
- Specialty
- Medical Oncology Physician
- Credentials
- MD
- NPI number
- 1700889201
Checked against the CMS National Provider Identifier registry on October 2, 2026.
About
Specialties
- Oncology
- Internal Medicine
Insurance
- Aetna
- Aetna HMO
- AmeriGroup
- Blue Cross and Blue Shield
- Blue Cross and Blue Shield - BlueCard PPO
- Centene
- Cigna - Open Access
- Cigna HMO
- Cigna PPO
- Great West Healthcare PPO
- Humana
- MultiPlan PPO
- United HealthCare
- United HealthCare - Choice Plus POS
- United HealthCare - Options PPO
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