Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Mark L Geller, MD

Individual provider Endocrinology, Diabetes & Metabolism Physician · NPI 1093710345

Dr. Mark L Geller, MD is an Internal Medicine in Tarzana, California. Graduated from University of California, San Diego School of Medicine in 1985, 41 years ago. Practices with Providence Facey Medical Foundation, a 323-clinician group, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
41
Trained at
University of California, San Diego School of Medicine
Licensed in
CA
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

18133 Ventura Blvd Ste 204
Tarzana, CA 91356-3641
Phone: (818) 466-7700
Fax: (818) 996-1649
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Endocrinology, Diabetes & Metabolism Physician (primary) Taxonomy 207RE0101X · Licence G60287 (CA)

Record details

NPI number1093710345
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 14, 2005
Last updated in NPPESOctober 23, 2018
Mailing addressPo Box 9602, Mission Hills, CA 91346-9602

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF CALIFORNIA, SAN DIEGO SCHOOL OF MEDICINE
Graduated 1985 (41 years in practice)
Group practice Providence Facey Medical Foundation — 323 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Other providers in Tarzana