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

Dr. Michael Tieu Loi, DO

Individual provider Internal Medicine Physician · NPI 1861057556

Dr. Michael Tieu Loi, DO is an Internal Medicine in Irvine, California. Graduated from At Still Un of Hlth Sciences, Col of Osteo Med, Mesa in 2021, 5 years ago. Practices with Centers for Family Medicine Gp, a 93-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
5
Trained at
At Still Un of Hlth Sciences, Col of Osteo Med, Mesa
Licensed in
CA
In the registry since
2019
Specialties on file
2
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

11 Technology Dr
Irvine, CA 92618-2302
Phone: (949) 923-3200
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 20A22634 (CA)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1861057556
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedMay 8, 2019
Last updated in NPPESNovember 23, 2025
Certification dateNovember 23, 2025
Mailing addressPo Box 35380, Las Vegas, NV 89133-5380

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolAT STILL UN OF HLTH SCIENCES, COL OF OSTEO MED, MESA
Graduated 2021 (5 years in practice)
Group practice Centers For Family Medicine Gp — 93 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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