Dr. Catherine Maikhanh Nguyen, MD

Dr. Nguyen practices at St. Joseph Heritage Orange - Chapman Mammogram Screening in Orange, California.

Dr. Nguyen's NPI, 1295199552, was assigned on April 12, 2016. Dr. Nguyen graduated from UC Irvine School of Medicine in 2015. Dr. Nguyen holds California license A168431.

Dr. Nguyen's primary practice is St. Joseph Heritage Orange - Chapman Mammogram Screening, at 2501 E. Chapman Ave. Ste. 102, Orange, CA 92869. The practice phone is (714) 628-3305.

Dr. Nguyen's primary practice is St. Joseph Heritage Orange - Chapman Mammogram Screening in Orange, California. Dr. Nguyen is also affiliated with Providence Saint John's Health Center. The medical group on file is St. Jude Heritage Medical Group. Dmand AI also links Dr. Nguyen to 1 more group practice or clinic, named with a free account. Dr. Nguyen's employer is on file too: a breast imaging center.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Nguyen practices, 3 sites in all. Vendor and product names are available with a free account.

Dermatology is Dr. Nguyen's primary specialty in the NPI Registry, under taxonomy code 207N00000X. Dr. Nguyen is board certified in dermatology by the American Board of Dermatology. Dmand AI has Dr. Nguyen's licenses on file in 2 states: California and Ohio.

Dmand AI lists acne, benign or precancerous skin growths, cancerous skin growth removal, contact dermatitis, itchy rashes, psoriasis, rash and scalp rash among the conditions Dr. Nguyen treats.

CMS data shows 765 Medicare services from Dr. Nguyen across 9 procedure codes in 2024, for 146 Medicare patients. Medicare paid $40,668 for them. Every service was in an office.

CMS counts 146 Medicare patients who saw Dr. Nguyen in 2024. The largest group is 65 to 74, with 67 patients. 75% of them have high cholesterol, and 68% have high blood pressure. 11% are also on Medicaid. Their average risk score is 1.25, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Nguyen's median patient age at 69, with 61% women.

In 2024, Dr. Nguyen wrote 795 Medicare Part D claims for 319 patients. 93% of them were for generic drugs. CMS names the drug for 712 of them, across 16 drugs with 11 or more claims each, at $104,676 in total drug cost. In 2023, CMS named 404 claims across 13 drugs.

Dr. Nguyen accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Nguyen as offering telehealth. CMS counts 309 procedures of removal of skin lesions by Dr. Nguyen, more than 82% of the clinicians it reports for that procedure.

Removal or shaving of skin growth: 1 to 10 procedures (CMS shows small counts as a range)

Dmand AI links 1 paper to Dr. Nguyen. Dr. Nguyen's most frequent co-authors are Kelly M. Cordoro and John Y.m. Koo, MD.

CMS Open Payments shows 213 general payments to Dr. Nguyen from 18 drug and device companies from 2020 to 2025. Food and beverage make up the largest share, 100% of the total. Sanofi and Genzyme US Companies paid the most, $1,906.

Dr. Nguyen graduated from UC Irvine School of Medicine in 2015.

Dr. Nguyen is in network with 13 carriers, including Aetna, United Healthcare and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.