Summary

Dr. Mark Geller is an internal medicine physician with over four decades of experience caring for patients. He earned his medical degree from the University of California San Diego School of Medicine and completed his residency at Santa Clara Valley Medical Center. With 41 years in practice, Dr. Geller brings extensive knowledge to comprehensive adult healthcare. He speaks English with his patients.

Dr. Geller practices at Facey Medical Group in Tarzana, California, and maintains hospital affiliations with Encino Hospital Medical Center. His clinical expertise includes treating common skin conditions like acne, managing allergies, and addressing anxiety and depression. He focuses on cancer prevention and screening programs, helping patients maintain their long-term health through chronic disease management and specialized diabetes care. Patients give Dr. Geller an average rating of 4.8 out of 5 stars.

AI-generated from data on this provider profile.

Quick Facts

  • accepting new patients
  • 4.8
  • 41 years of experience
  • 20 insurance plans accepted
  • speaks English
  • Santa Clara Valley Medical Center
  • 430 written reviews
  • 1 award
  • 1 specialty
  • 16 areas of expertise
  • 2 board certifications
  • 1 hospital affiliation
  • 1 office location
  • Male

Patients’ Perspective

  • Gave an accurate diagnosis
  • Had a good bedside manner
  • Spent time with me

Awards

  • Vitals Preferred Provider

    • Vitals Preferred Provider Award
      • Preferred Provider badge recognizes providers that are committed to transparency, responsiveness and great service to patients, and have earned a high patient satisfaction rating.

  • Click for our Methodology

Office Location

Facey Medical Group - Tarzana

18133 Ventura Blvd Ste 204Tarzana, CA 91356

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Dr. Mark Lawrence Geller, MD
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Dr. Mark Lawrence Geller, MDDr. George Mousa, MDKarthikeyan Viswanathan, DODr. Adama Diarra, DO
Internal MedicineInternal MedicineInternal MedicineInternal Medicine
Accepts New Patients Accepts New Patients Accepts New Patients Accepts New Patients
4.8 
41 Years of Experience 17 Years of Experience 12 Years of Experience 14 Years of Experience
Virtual Visit Available Virtual Visit Available Virtual Visit Available Virtual Visit Available
Speaks English Speaks English, Tamil Speaks English, French, Bambara
Tarzana , CAUpland , CALos Altos , CATigard , OR
Med School: University Of California San Diego School Of Medicine Med School: University Of Aleppo Faculty Of Medicine Med School: Bassett Medical Center - Cooperstown, New York Med School: Arizona College of Osteopathic Medicine
Current Profile
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Insurance Plans Accepted by Dr. Mark Lawrence Geller

  • Accepts Medicare
  • Aetna - HMO
  • Aetna PPO
  • Anthem Blue Cross HMO
  • Anthem Blue Cross Medicare Advantage
  • Anthem Blue Cross PPO
  • Blue Shield of CA HMO
  • Blue Shield of CA HMO - Trio
  • Blue Shield of CA Medicare Advantage
  • Cigna HMO
  • Cigna PPO
  • Coventry/First Health PPO
  • Health Net - Medicare Advantage
  • Health Net Cal MediConnect HMO
  • Health Net PPO
  • HealthSmart (Interplan) PPO
  • Humana Medicare Advantage
  • Multiplan PPO
  • SCAN Medicare Advantage
  • US Family Health Plan - TriCare
  • Vivity by Anthem Blue Cross

Medical Specialties

Dr. Mark Lawrence Geller has the following specialty

Specialty Expertise

Dr. Mark Lawrence Geller has the following 16 areas of expertise

  • Acromegaly
  • Addison Disease
  • Adrenal Gland Diseases
  • Cushing Disease
  • Diabetes
  • Diabetes (Types I & II)
  • Diabetes, Type 2
  • Fatigue
  • Gland Issues
  • Hormones
  • Hyperthyroidism
  • Hypopituitarism
  • Hypothyroidism
  • Osteoporosis
  • Pituitary Diseases
  • Thyroid Diseases

Certifications, License, & Education

41 Years Experience

MEDICAL LICENSE

Medical Doctor, California, 2026, Active

EDUCATION & TRAINING

Residency

Santa Clara Valley Medical Center

Medical School

University Of California San Diego School Of MedicineGraduated in 1985

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Frequently Asked Questions

Is Dr. Mark Geller accepting new patients?
Dr. Mark Geller is accepting new patients on Vitals. View Dr. Mark Geller's profile on Vitals to make an appointment.
Does Dr. Mark Geller accept my insurance?
You can see the insurance plans that Dr. Mark Geller accepts on their Vitals profile.
How can I make an appointment with Dr. Mark Geller?
You can find contact information for Dr. Mark Geller here on Vitals.
Does Dr. Mark Geller accept virtual/telehealth appointments?
Yes, Dr. Mark Geller accepts virtual/telehealth appointments. Click the virtual visit button on their Vitals profile.
Which hospitals is Dr. Mark Geller affiliated with?
Dr. Mark Geller is affiliated with Encino Hospital Medical Center.

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