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Dr. Warren D. Johnston, MD

Cardiovascular Disease

  • (714) 543-5555

Dr. Johnston's Overview

Dr. Warren D. Johnston graduated from the University of Rochester School of Medicine and Dentistry in 1975. He works in Orange, CA and specializes in Cardiovascular Disease. Dr. Johnston is affiliated with Hoag Memorial Hospital, Saint Jude Medical Center and St Joseph Hospital Of Orange.

Dr. Johnston's Experience

Years in Practice: 40

Conditions Treated by Dr. Johnston

  • Not Available

Procedures Performed by Dr. Johnston

  • Not Available

Dr. Johnston's Specialties

Cardiovascular Disease

Dr. Johnston's Education & Training

Medical School: University of Rochester School of Medicine and Dentistry; Graduated 1975

Dr. Johnston's Rating

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Overall Rating


  • Explains conditions & treatments
  • Takes time to answer my questions
  • Provides follow-up as needed
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Dr. Johnston's Accepted Insurance

  • Aetna Choice POS II
  • Aetna HMO
  • Aetna HMO Deductible Plan CA members only
  • Aetna Managed Choice POS Open Access
  • Aetna Savings Plus of CA
  • Aetna Signature Administrators PPO
  • BCBS Blue Card PPO
  • Blue Cross CA Advantage PPO Preferred DirectAccess Plus
  • Blue Cross CA CaliforniaCare HMO
  • Blue Cross CA PowerSelect HMO
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Dr. Johnston's Office Information & Appointments

Office Locations

St Joseph Heritage Medical Grp
St Josephs Heritage Healthcare

1140 W La Veta Ave Ste 430
Orange, CA 92868
(714) 543-5555


Office Hours and Information

Fax: (714) 543-5585

Practice Website:

Accepting New Patients: Yes

Medicare Accepted: Yes

Medicaid Accepted: Yes

Monday 9:00 AM - 5:00 PM
Tuesday 9:00 AM - 5:00 PM
Wednesday 9:00 AM - 5:00 PM
Thursday 9:00 AM - 5:00 PM
Friday 9:00 AM - 5:00 PM
Saturday Closed
Sunday Closed

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Office Locations

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