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Mark Lawrence Geller

Internal Medicine Physician - Endocrinology, Diabetes & Metabolism

Highlights

  • Board Certified

Biography

Mark Lawrence Geller is a Internal Medicine Physician - Endocrinology, Diabetes & Metabolism practicing in Tarzana, CA

He has not yet shared a personalized biography with Doctor.com.

Featured Review See More Reviews

Dr. Mark Geller is an excellent doctor. I've had him for the longest time. I always get good referrals and good care. The whole care team is easy to access and follow ups for my concerns are answered in a timely manner. I will recommend Dr. Geller to my family and friends.…

Anonymous

Summary

Provider Training

UniversityDegreeFocusGraduated
University of Ca, San Diego, School of Medicine LA Jolla CaOther Degree1985
University of CaliforniaMedical Degree1985

InstitutionFocusYear
Residency - Santa Clara Valley Medical Center Program Not Specified
Residency - Stanford University Hospital, Endocrinology, Diabetes & Metabolism; Santa Clara Valley Medical Center, Internal MedicineNot Specified

CertificationCert. BodyYear
Internal medicine
Sub-Specialty: Endocrinology, Diabetes and Metabolism		Internal MedicineNot Specified

Specialties

Languages Spoken
English
Medical Specialties
  • Internal Medicine Physician - Sub-Specialty: Endocrinology, Diabetes & Metabolism

Internal Medicine

Years In Practice: 33 (started in 1992)

Accepts New Patients: Yes

Payment Options

Payment Details

Reviews

Average Rating: 5
Number of Reviews: 367
Most Recent Review: 10/18/2025
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Office & Staff Evaluation Not rated

Ease of Getting an Appointment Not rated
Courtesy of Practice Staff Not rated
Office Appearance & Atmosphere Not rated
Handling of Billing Matters Not rated
Average Wait Time Not Rated

Provider Evaluation

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Verified Patient

“Dr. Mark Geller is an excellent ...”

Dr. Mark Geller is an excellent doctor. I've had him for the longest time. I always get good referrals and good care. The whole care team is easy to access and follow ups for my concerns are answered in a timely manner. I will recommend Dr. Geller to my family and friends.

Anonymous 10/18/2025
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Verified Patient

“Dr. Geller is always very friend...”

Dr. Geller is always very friendly and thorough. Thank you for your services.

Anonymous 10/14/2025
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Verified Patient

“All your health care teams are p...”

All your health care teams are polite and courteous

Anonymous 10/04/2025
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Verified Patient

“As a retired health care profess...”

As a retired health care professional I'm impressed with the providers that I have encountered with this group.

Anonymous 10/03/2025
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Verified Patient

“Excellent service by my internis...”

Excellent service by my internist.

Anonymous 09/27/2025
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Verified Patient

“It feels like my provider treats...”

It feels like my provider treats my condition in only one way - the way he was taught. I wish he had some alternative or non-standard treatments available. My provider seems like any other regular provider, doing just his job and nothing more. I understand that there's nothing wrong with that, but I just wish he actually cared about the treatment I receive.

Anonymous 10/16/2025
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Verified Patient

“Excellent doctor....”

Excellent doctor.

Anonymous 10/06/2025
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Verified Patient

“Dr Geller's group is the best!!!...”

Dr Geller's group is the best!!!

Anonymous 10/04/2025
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Verified Patient

“All is good....”

All is good.

Anonymous 09/29/2025
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Verified Patient

“Great doctor who listens and exp...”

Great doctor who listens and explains and truly cares about you.

Anonymous 09/27/2025
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Procedures & Treatments Offered

    Commonly Prescribed Medications

    Mark Lawrence Geller has not yet listed the medications that he commonly prescribes.

    Accepted Insurance

    Accepted Insurance

    Mark Lawrence Geller has not yet specified the insurance plans he accepts.
     

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