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5.0(482 reviews)
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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. Geller is extremely considerate!…

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: 34 (started in 1992)

Accepts New Patients: Yes

Payment Options

Payment Details

Reviews

Average Rating: 5.0
Number of Reviews: 482
Most Recent Review: 10/05/2026
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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 5.0

Clear Explanations 5.0
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Verified Patient

“Dr. Geller is extremely consider...”

Dr. Geller is extremely considerate!

Anonymous 10/05/2026
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Verified Patient

“Excellent care...”

Excellent care

Anonymous 09/21/2026
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Verified Patient

“Good...”

Good

Anonymous 09/21/2026
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Verified Patient

“Provider was great however I wai...”

Provider was great however I waited over 2 hours to do blood work at the lab.

Anonymous 09/14/2026
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Verified Patient

“I feel very fortunate to have ha...”

I feel very fortunate to have had Dr. Geller as my doctor.

Anonymous 09/10/2026
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Verified Patient

“I will miss Dr Geller when he re...”

I will miss Dr Geller when he retires. He has been my physician for many years. He's the best.

Anonymous 09/23/2026
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Verified Patient

“Good...”

Good

Anonymous 09/21/2026
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Verified Patient

“He's retiring at the end of this...”

He's retiring at the end of this year, so a lot of what I say is moot. But Dr. Geller was a very good doctor, attentive and listening.

Anonymous 09/20/2026
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Verified Patient

“Dr. Geller has been such a fanta...”

Dr. Geller has been such a fantastic doctor, caring, and always patient. He will be greatly missed as he is retiring.

Anonymous 09/11/2026
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Verified Patient

“I think Dr Geller will be my new...”

I think Dr Geller will be my new provider from now on

Anonymous 09/06/2026
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Locations

Affiliated Practices

Practice Colleagues

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Loren Leshan,   -   Family Medicine Physician
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Jeffrey Shukhman,   -   Internal Medicine Physician
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Jody Levy,   -   Internal Medicine Physician
0 reviews
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Procedures & Services

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.