Ryan K. Ah San, PA-C

Ryan Ah San practices at Memorialcare Medical Foundation in Rancho Santa Margarita, California.

Ryan Ah San's NPI, 1013181346, was assigned on April 17, 2008. Ryan Ah San holds California license PA15744.

Ryan Ah San's primary practice is Memorialcare Medical Foundation, at 29472 Ave DE-Las Banderas, Rancho Santa Margarita, CA 92688 in Orange County. The practice phone is (877) 696-3622.

Ryan Ah San's primary practice is Memorialcare Medical Foundation in Rancho Santa Margarita, California. Ryan Ah San is also affiliated with MemorialCare Saddleback Medical Center. The medical group on file is MemorialCare Medical Group. Dmand AI also links Ryan Ah San to 1 more group practice or clinic, named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Ryan Ah San practices, 2 sites in all. Vendor and product names are available with a free account.

Medical is Ryan Ah San's primary specialty in the NPI Registry, under taxonomy code 363AM0700X. Ryan Ah San is licensed in California.

Dmand AI lists acute skin infection, ankle or foot injury, cold sores or genital herpes, conjunctivitis, contact dermatitis, ear eustachian tube disorders, fluid and electrolyte imbalances and joint pain among the conditions Ryan Ah San treats.

CMS data shows 279 Medicare services from Ryan Ah San across 4 procedure codes in 2024, for 120 Medicare patients. Medicare paid $10,053 for them. Every service was in an office.

CMS counts 120 Medicare patients who saw Ryan Ah San in 2024. The largest group is 65 to 74, with 74 patients. 75% of them have high cholesterol, and 58% have high blood pressure. 10% are also on Medicaid. Their average risk score is 1.11, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Ryan Ah San's median patient age at 54, with 45% women.

In 2024, Ryan Ah San wrote 1,837 Medicare Part D claims for 274 patients. 87% of them were for generic drugs. CMS names the drug for 1,350 of them, across 55 drugs with 11 or more claims each, at $156,067 in total drug cost.

Ryan Ah San accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Ryan Ah San as offering telehealth.

CMS Open Payments shows 5 general payments to Ryan Ah San from 3 drug and device companies from 2024 to 2025. Food and beverage make up the largest share, 60% of the total. Novo Nordisk Inc paid the most, $87.