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

Gary Slesing Feigenbaum, MD

Individual provider Internal Medicine Physician · NPI 1558604256

Gary Slesing Feigenbaum, MD is an Internal Medicine in Santa Monica, California. Qualified in 2013, 13 years ago. Practices with The Regents of the University of California, a 1,414-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
13
Licensed in
CA
In the registry since
2013
Specialties on file
2
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

1250 16th St Ste 2304 Central Wing
Santa Monica, CA 90404-1249
Phone: (310) 319-4698
Fax: (310) 206-3260
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence A133392 (CA)
Internal Medicine Physician Taxonomy 207R00000X · Licence A133392 (CA)

Record details

NPI number1558604256
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedApril 1, 2013
Last updated in NPPESFebruary 21, 2017

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2013 (13 years in practice)
Group practice The Regents Of The University Of California — 1414 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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