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

Dr. Mon-Ta Tsai, MD

Individual provider Internal Medicine Physician · NPI 1427019231

Dr. Mon-Ta Tsai, MD is an Internal Medicine Physician in Mission Viejo, 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.

See every abbreviation used in this directory →

Practice location Address checks out

25982 Pala Ste 250
Mission Viejo, CA 92691-6719
Phone: (949) 588-0051
Fax: (949) 588-0052
Show map & directions

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence A65382 (CA)

Record details

NPI number1427019231
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 31, 2006
Last updated in NPPESJuly 13, 2026

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