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

Individual provider Internal Medicine Physician · NPI 1538178611

Dr. Katherine Manasson, MD is an Internal Medicine in Mission Viejo, California. Qualified in 1975, 51 years ago. Accepts Medicare assignment. Licensed in California.

Years since qualifying
51
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

26732 Crown Valley Pkwy Ste 507
Mission Viejo, CA 92691-6306
Phone: (949) 348-1085
Fax: (949) 348-1087
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence A61594 (CA)

Record details

NPI number1538178611
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 6, 2006
Last updated in NPPESMarch 20, 2008

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 1975 (51 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Mission Viejo