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Internist, Endocrinologist (diabetes, hormones)
26 years of experience
Accepting new patients
License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Patient Reviews

Patient comments (7)

The overall average patient rating of Dr. Mark Geller is Good. Dr. Geller has been reviewed by 13 patients who have provided 7 comments. The rating is 3.5 out of 5 stars.

Patient Ratings
Ease of Appointment 3.2
Promptness 2.8
Courteous Staff 2.4
Accurate Diagnosis 3.8
Bedside Manner 4.3
Spends Time with Me 4.2
Follows Up After Visit 2.4

Specialties & Research

Dr. Mark Geller, MD is board certified in Internal Medicine and Endocrinology, Diabetes & Metabolism.

  • He has special expertise in 7 areas:
  • Adrenal Gland Diseases
  • Diabetes
  • Diabetes Mellitus
  • Diabetes
  • Osteoporosis
  • Pituitary Diseases
  • Thyroid Diseases

Education & Awards

Dr. Geller graduated from Sanger General Hospital, University Of California San Diego School Of Medi. He has 1 awards.

Compassionate Doctor Recognition (2010)


Dr. Geller has 4 hospital affiliations:

  • Little Company of Mary Hospital 
  • Little Company of Mary-San Pedro Hospital 


  • English

> > > > Dr. Mark Geller, MD

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Additional Information
Dr. Mark Lawrence Geller MD is a male Internist, has 26 years of experience and practices in Internal Medicine and Endocrinology, Diabetes & Metabolism.
Where does Dr. Mark L. Geller practice?
Dr. Mark Geller has 1 office location.
Dr. Mark Geller practices Internal Medicine and Endocrinology, Diabetes & Metabolism near Tarzana, CA.
See Tarzana Internists and Tarzana Endocrinologists.