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

Dr. Diane Flessas, MD

Individual provider Hospice and Palliative Medicine (Internal Medicine) Physician · NPI 1164639753

Dr. Diane Flessas, MD is a Hospice and Palliative Medicine (Internal Medicine) Physician in Monrovia, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

1107 Starlit Ln
Monrovia, CA 91016-1825
Phone: (626) 818-5959
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hospice and Palliative Medicine (Internal Medicine) Physician (primary) Taxonomy 207RH0002X · Licence G064595 (CA)

Record details

NPI number1164639753
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorYes
NPI enumeratedMay 16, 2007
Last updated in NPPESMay 8, 2014