Summary

Dr. John Gruen brings over four decades of expertise in internal medicine to his practice. He earned his medical degree from Universitatea De Medicina Si Farmacie Iuliu Hatieganu, building a foundation of knowledge that has served him well throughout his 43-year career. His extensive experience in internal medicine allows him to provide comprehensive care for adult patients dealing with complex medical conditions.

Dr. Gruen practices at multiple locations across the Los Angeles area, including Kaiser Permanente Panorama City Medical Center, Mission Community Hospital, UCLA Santa Monica Medical Center, and Providence Saint Johns Health Center in Panorama City and Santa Monica, California. He focuses on managing high blood pressure and type 2 diabetes, conditions that affect millions of Americans. His approach includes performing comprehensive metabolic panels and complete blood counts to monitor patient health, along with specialized diabetic nephropathy screening to prevent kidney complications. Patients rate him 3.3 out of 5 stars on average.
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Quick Facts

  • 3.3
  • 43 years of experience
  • 25 insurance plans accepted
  • Universitatea De Medicina Si Farmacie Iuliu Hatieganu
  • 4 written reviews
  • 1 specialty
  • 4 office locations
  • Male

Office Locations

Dr. John Leon Gruen has 4 locations

Mission Community Hospital

14850 Roscoe BlvdPanorama City, CA 91402

Providence Saint Johns Health Center

2121 Santa Monica BlvdSanta Monica, CA 90404

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Dr. John Leon Gruen, MDKarthikeyan Viswanathan, DODr. Tooba Rehman, MDEric Harker
Internal MedicineInternal MedicineInternal MedicineInternal Medicine
Accepts New Patients Accepts New Patients Accepts New Patients
3.3 
3.9 
43 Years of Experience 12 Years of Experience 16 Years of Experience 25 Years of Experience
No Virtual Visit Option Virtual Visit Available Virtual Visit Available Virtual Visit Available
Speaks English, Tamil Speaks English
Panorama City , CALos Altos , CAKaty , TXLyons , CO
Med School: Universitatea De Medicina Si Farmacie Iuliu Hatieganu Med School: Bassett Medical Center - Cooperstown, New York Med School: CHICAGO MEDICAL SCHOOL AT ROSALIND FRANKLIN UNIVERSITY OF MEDICINE & SCIENCE Med School: Duke University School Of Medicine
Current Profile
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Insurance Plans Accepted by Dr. John Leon Gruen

  • Aetna
  • Anthem Blue Cross
  • BLUE CROSS of CALIFORNIA
  • BLUE CROSS of CALIFORNIA - HMO
  • Blue Shield of California
  • Blue Shield of California - HMO
  • CalOptima - Medicaid (Managed)
  • Cigna
  • Contra Costa Health Plan
  • Health Net - HMO
  • Humana
  • Kaiser Permanente
  • Kaiser Permanente - DHMO
  • Kaiser Permanente - HMO
  • Kaiser Permanente - Medicaid (Managed)
  • L.A. Care Health Plan
  • L.A. Care Health Plan - HMO
  • L.A. Care Health Plan - Medicaid
  • Medicare
  • Medicare - Medicaid
  • Medicare - Medicare
  • Optum Health
  • UnitedHealthcare
  • UnitedHealthcare - HMO
  • Western Health Advantage

Medical Specialties

Dr. John Leon Gruen has the following specialty

Certifications, License, & Education

43 Years Experience

MEDICAL LICENSE

Medical Doctor, California, 2027, Active

EDUCATION & TRAINING

Medical School

Universitatea De Medicina Si Farmacie Iuliu HatieganuGraduated in 1983

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Frequently Asked Questions

Where is Dr. John Gruen's office located?
Dr. John Gruen's office is located at 13651 Willard St, Panorama City, CA, 91402.
Does Dr. John Gruen accept virtual/telehealth appointments?
Dr. John Gruen has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Is Dr. John Gruen accepting new patients?
Dr. John Gruen has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.
How can I make an appointment with Dr. John Gruen?
You can find contact information for Dr. John Gruen here on Vitals.
Does Dr. John Gruen accept my insurance?
You can see the insurance plans that Dr. John Gruen accepts on their Vitals profile.

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