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 January 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 - “ Great experience r/t my care pro... ”

Great experience r/t my care provider

Verified Patient

“Great experience r/t my care pro...”

Great experience r/t my care provider

Anonymous 01/21/2026

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Review by Anonymous on January 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 - “ Everyone at Facey has been very ... ”

Everyone at Facey has been very friendly, responsive and attentive. Communication on the portal has been a great experience when I've needed to communicate with my Doctors.

Verified Patient

“Everyone at Facey has been very ...”

Everyone at Facey has been very friendly, responsive and attentive. Communication on the portal has been a great experience when I've needed to communicate with my Doctors.

Anonymous 01/19/2026

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Review by Anonymous on January 18, 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 terrific... ”

Dr Geller is terrific

Verified Patient

“Dr Geller is terrific...”

Dr Geller is terrific

Anonymous 01/18/2026

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Review by Anonymous on January 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 - “ Dr. Geller Was very professional... ”

Dr. Geller Was very professional and kind. I am a new patient he got an appointment for me quickly before my scheduled appointment. Because of some concerning symptoms.

Verified Patient

“Dr. Geller Was very professional...”

Dr. Geller Was very professional and kind. I am a new patient he got an appointment for me quickly before my scheduled appointment. Because of some concerning symptoms.

Anonymous 01/13/2026

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Review by Anonymous on December 27, 2025 -

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 had a serious Sepsis infection... ”

I had a serious Sepsis infection reaction in Doctor office. Dr. Geller insisted I allow ambulance response. He was right. I was not. 4 days in hospital before I was released. Still Alive!!

Verified Patient

“I had a serious Sepsis infection...”

I had a serious Sepsis infection reaction in Doctor office. Dr. Geller insisted I allow ambulance response. He was right. I was not. 4 days in hospital before I was released. Still Alive!!

Anonymous 12/27/2025

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Review by Anonymous on January 20, 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 - “ Care is good... ”

Care is good

Verified Patient

“Care is good...”

Care is good

Anonymous 01/20/2026

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Review by Anonymous on January 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 - “ He was pleasant, knowledgeable, ... ”

He was pleasant, knowledgeable, and seemed genuinely concerned for my welfare.

Verified Patient

“He was pleasant, knowledgeable, ...”

He was pleasant, knowledgeable, and seemed genuinely concerned for my welfare.

Anonymous 01/19/2026

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Review by Anonymous on January 14, 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 - “ great... ”

great

Verified Patient

“great...”

great

Anonymous 01/14/2026

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Review by Anonymous on January 05, 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 very thorough, res... ”

Dr. Geller is very thorough, respectful, kind, and caring. I always feel heard and cared for as his patient.

Verified Patient

“Dr. Geller is very thorough, res...”

Dr. Geller is very thorough, respectful, kind, and caring. I always feel heard and cared for as his patient.

Anonymous 01/05/2026

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Review by Anonymous on December 27, 2025 -

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 and staff are great!... ”

Dr Geller and staff are great!

Verified Patient

“Dr Geller and staff are great!...”

Dr Geller and staff are great!

Anonymous 12/27/2025

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

Jeffrey Shukhman, - Internal Medicine Physician

Mina Moussavian-Assadi, - Pediatrician

Daniel Lewis, - Internal Medicine Physician

Jayvee Regala, - Pediatrician

Loren Leshan, - Family Medicine Physician

Jody Levy, - Internal Medicine Physician

Procedures & Services

Procedures & Treatments Offered

Commonly Prescribed Medications

Accepted Insurance

Accepted Insurance