Dr. Robert C Johnson MD Internist

Dr. Robert Johnson is an internist in Smithtown, New York. He is affiliated with multiple hospitals in the area, including St. Catherine of Siena Medical Center and Stony Brook University Medical Center. He received his medical degree from Columbia University College of Physicians and Surgeons and has been in practice for 40 years. He is one of 48 doctors at St. Catherine of Siena Medical Center and one of 75 at Stony Brook University Medical Center who specialize in Internal Medicine.

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Office Location

See Contact Information

Specialty & Clinical Interests

Internist: Addiction Medicine

Education & Medical Training

North Shore-Long Island Jewish Health System
Residency, Internal Medicine, 1974 - 1978

Columbia University College of Physicians and Surgeons
Class of 1974

Certifications & Licensure

American Board of Surgery
Certified in Surgery

WI State Medical License
Active through 2013

Insurances Accepted

  • Aetna Choice POS II
  • Aetna HMO
  • BCBS Blue Card PPO
  • BCBS Illinois PPO
  • CIGNA HMO
  • CIGNA Open Access
  • CIGNA PPO
  • Coventry Health Care PPO Platinum
  • First Health PPO
  • HealthLink PPO
  • Humana ChoiceCare Network PPO
  • Multiplan PHCS PPO
  • Multiplan PPO
  • United Healthcare - Direct Choice Plus POS
  • United Healthcare - Direct Options PPO
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