Mark Lawrence Geller

University	Degree	Focus	Graduated
University of Ca, San Diego, School of Medicine LA Jolla Ca	Other Degree		1985
University of California	Medical Degree		1985

Institution	Focus	Year
Residency - Santa Clara Valley Medical Center Program		Not Specified
Residency - Stanford University Hospital, Endocrinology, Diabetes & Metabolism; Santa Clara Valley Medical Center, Internal Medicine		Not Specified

Certification	Cert. Body	Year
Internal medicine Sub-Specialty: Endocrinology, Diabetes and Metabolism	Internal Medicine	Not Specified

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Review by Anonymous on March 21, 2026 -

Facey Medical Group - Tarzana - 18133 Ventura Boulevard Suite 204

Office & Staff Evaluation

Practice Evaluation

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

Provider Evaluation

Willingness to Spend Time with You Not rated
Listening Skills Not rated
Clear explanations
Trust in Decision Making Not rated
Accuracy of Diagnosis Not rated
Post-Visit Follow-Up Not rated

Comment - “ I really appreciated the time th... ”

I really appreciated the time the doctor took to help me understand my condition

Verified Patient

“I really appreciated the time th...”

I really appreciated the time the doctor took to help me understand my condition

Anonymous 03/21/2026

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Review by Anonymous on March 13, 2026 -

Facey Medical Group - Tarzana - 18133 Ventura Boulevard Suite 204

Office & Staff Evaluation

Practice Evaluation

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

Provider Evaluation

Willingness to Spend Time with You Not rated
Listening Skills Not rated
Clear explanations
Trust in Decision Making Not rated
Accuracy of Diagnosis Not rated
Post-Visit Follow-Up Not rated

Comment - “ The doctor is very good.!!!!!!!... ”

The doctor is very good.!!!!!!!

Verified Patient

“The doctor is very good.!!!!!!!...”

The doctor is very good.!!!!!!!

Anonymous 03/13/2026

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Review by Anonymous on March 08, 2026 -

Facey Medical Group - Tarzana - 18133 Ventura Boulevard Suite 204

Office & Staff Evaluation

Practice Evaluation

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

Provider Evaluation

Willingness to Spend Time with You Not rated
Listening Skills Not rated
Clear explanations Not rated
Trust in Decision Making Not rated
Accuracy of Diagnosis Not rated
Post-Visit Follow-Up Not rated

Comment - “ Always nice to see him !... ”

Always nice to see him !

Verified Patient

“Always nice to see him !...”

Always nice to see him !

Anonymous 03/08/2026

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Review by Anonymous on March 03, 2026 -

Facey Medical Group - Tarzana - 18133 Ventura Boulevard Suite 204

Office & Staff Evaluation

Practice Evaluation

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

Provider Evaluation

Willingness to Spend Time with You Not rated
Listening Skills Not rated
Clear explanations
Trust in Decision Making Not rated
Accuracy of Diagnosis Not rated
Post-Visit Follow-Up Not rated

Comment - “ Dr. Geller is kind and a good li... ”

Dr. Geller is kind and a good listener. He makes me feel that we can take the time needed for the appointment. For my part, I always come prepared with a list of questions so that I can be efficient with his time.

Verified Patient

“Dr. Geller is kind and a good li...”

Anonymous 03/03/2026

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Review by Anonymous on March 01, 2026 -

Facey Medical Group - Tarzana - 18133 Ventura Boulevard Suite 204

Office & Staff Evaluation

Practice Evaluation

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

Provider Evaluation

Willingness to Spend Time with You Not rated
Listening Skills Not rated
Clear explanations
Trust in Decision Making Not rated
Accuracy of Diagnosis Not rated
Post-Visit Follow-Up Not rated

Comment - “ Dr. Geller is a good communicato... ”

Dr. Geller is a good communicator. I trust that he is attentive to my concerns and also to my complex medical needs.

Verified Patient

“Dr. Geller is a good communicato...”

Dr. Geller is a good communicator. I trust that he is attentive to my concerns and also to my complex medical needs.

Anonymous 03/01/2026

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Review by Anonymous on March 19, 2026 -

Facey Medical Group - Tarzana - 18133 Ventura Boulevard Suite 204

Office & Staff Evaluation

Practice Evaluation

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

Provider Evaluation

Willingness to Spend Time with You Not rated
Listening Skills Not rated
Clear explanations
Trust in Decision Making Not rated
Accuracy of Diagnosis Not rated
Post-Visit Follow-Up Not rated

Comment - “ I'm having some troubles to comm... ”

I'm having some troubles to communicate with my doctor in between the visits

Verified Patient

“I'm having some troubles to comm...”

I'm having some troubles to communicate with my doctor in between the visits

Anonymous 03/19/2026

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Review by Anonymous on March 10, 2026 -

Facey Medical Group - Tarzana - 18133 Ventura Boulevard Suite 204

Office & Staff Evaluation

Practice Evaluation

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

Provider Evaluation

Willingness to Spend Time with You Not rated
Listening Skills Not rated
Clear explanations
Trust in Decision Making Not rated
Accuracy of Diagnosis Not rated
Post-Visit Follow-Up Not rated

Comment - “ Wonderful care.... ”

Wonderful care.

Verified Patient

“Wonderful care....”

Wonderful care.

Anonymous 03/10/2026

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Review by Anonymous on March 08, 2026 -

Facey Medical Group - Tarzana - 18133 Ventura Boulevard Suite 204

Office & Staff Evaluation

Practice Evaluation

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

Provider Evaluation

Willingness to Spend Time with You Not rated
Listening Skills Not rated
Clear explanations Not rated
Trust in Decision Making Not rated
Accuracy of Diagnosis Not rated
Post-Visit Follow-Up Not rated

Comment - “ I have been seeing Dr Geller for... ”

I have been seeing Dr Geller for many years and he is always kind, courteous and helpful.

Verified Patient

“I have been seeing Dr Geller for...”

I have been seeing Dr Geller for many years and he is always kind, courteous and helpful.

Anonymous 03/08/2026

Open full review

Review by Anonymous on March 01, 2026 -

Facey Medical Group - Tarzana - 18133 Ventura Boulevard Suite 204

Office & Staff Evaluation

Practice Evaluation

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

Provider Evaluation

Willingness to Spend Time with You Not rated
Listening Skills Not rated
Clear explanations
Trust in Decision Making Not rated
Accuracy of Diagnosis Not rated
Post-Visit Follow-Up Not rated

Comment - “ I was very happy... ”

I was very happy

Verified Patient

“I was very happy...”

I was very happy

Anonymous 03/01/2026

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Review by Anonymous on February 25, 2026 -

Facey Medical Group - Tarzana - 18133 Ventura Boulevard Suite 204

Office & Staff Evaluation

Practice Evaluation

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

Provider Evaluation

Willingness to Spend Time with You Not rated
Listening Skills Not rated
Clear explanations
Trust in Decision Making Not rated
Accuracy of Diagnosis Not rated
Post-Visit Follow-Up Not rated

Comment - “ Always patient, listens well, ap... ”

Always patient, listens well, approaches options for care with ease.

Verified Patient

“Always patient, listens well, ap...”

Always patient, listens well, approaches options for care with ease.

Anonymous 02/25/2026

Internal Medicine Physician - Endocrinology, Diabetes & Metabolism

Highlights

Biography

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Summary

Provider Training

Specialties

Languages Spoken

Medical Specialties

Payment Options

Reviews

Office & Staff Evaluation Not rated

Provider Evaluation

Locations

Affiliated Practices

Facey Medical Group - Tarzana

Practice Colleagues

Daniel Lewis, - Internal Medicine Physician

Mina Moussavian-Assadi, - Pediatrician

Jeffrey Shukhman, - Internal Medicine Physician

Jayvee Regala, - Pediatrician

Jody Levy, - Internal Medicine Physician

Loren Leshan, - Family Medicine Physician

Procedures & Services

Procedures & Treatments Offered

Commonly Prescribed Medications

Accepted Insurance

Accepted Insurance