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

Mr. Frederic Grannis, MD

Individual provider Surgical Oncology Physician · NPI 1598773582

Mr. Frederic Grannis, MD is a Surgical Oncology Physician in Duarte, California. Licensed in California. Registered with an NPI since 2006.

Licensed in
CA
In the registry since
2006
Specialties on file
2
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

1500 E Duarte Rd
Duarte, CA 91010
Phone: (626) 359-8111
Show map & directions

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

Specialties & licences

Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (primary) Taxonomy 208G00000X · Licence G36693 (CA)
Surgical Oncology Physician Taxonomy 2086X0206X · Licence G36693 (CA)

Record details

NPI number1598773582
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 4, 2006
Last updated in NPPESAugust 11, 2015
Mailing address1333 S. Mayflower Ave., 2nd Floor, Monrovia, CA 91016-4066

Other providers in Duarte