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

Individual provider Internal Medicine Physician · NPI 1346477858

Loan T. Nguyen, MD is an Internal Medicine in Mission Viejo, California. Graduated from St Louis College of Physicians and Surgeons in 2007, 19 years ago. Practices with Providence Medical Foundation, a 1,465-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
19
Trained at
St Louis College of Physicians and Surgeons
Licensed in
CA
In the registry since
2009
Specialties on file
2
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

26800 Crown Valley Pkwy 315
Mission Viejo, CA 92691-6384
Phone: (949) 364-6000
Fax: (949) 364-1204
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence A106830 (CA)
Internal Medicine Physician Taxonomy 207R00000X · Licence A106830 (CA)

Record details

NPI number1346477858
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 11, 2009
Last updated in NPPESNovember 9, 2021
Certification dateNovember 9, 2021

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolST. LOUIS COLLEGE OF PHYSICIANS AND SURGEONS
Graduated 2007 (19 years in practice)
Group practice Providence Medical Foundation — 1465 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

Other providers in Mission Viejo