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

Rosetta Loree Willis Hassan, MD

Individual provider Clinical Genetics (M.D.) Physician · NPI 1871660704

Rosetta Loree Willis Hassan, MD is a Clinical Genetics (M.D.) Physician in Bellflower, California. Licensed in California. Registered with an NPI since 2006.

Licensed in
CA
In the registry since
2006
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

9400 Rosecrans Ave
Bellflower, CA 90706-2246
Phone: (562) 461-3000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Genetics (M.D.) Physician (primary) Taxonomy 207SG0201X · Licence G36060 (CA)

Record details

NPI number1871660704
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 29, 2006
Last updated in NPPESMarch 20, 2019
Mailing address9400 Rosecrans Ave, Bellflower, CA 90706-2246