Dr. Tonya Wei An, MD

Dr. An practices at Southern California Permanente Medical Group in Anaheim, California.

Dr. An's NPI, 1699292045, was assigned on August 26, 2017. Dr. An graduated from WashU Medicine in 2015. Dr. An holds California license A153483.

Dr. An's primary practice is Southern California Permanente Medical Group, at 441 N Lakeview Ave, Anaheim, CA 92807 in Orange County. The practice phone is (714) 279-4000.

Dr. An's primary practice is Southern California Permanente Medical Group in Anaheim, California. Dr. An is also affiliated with Stanford Hospital at 300 Pasteur Drive. The medical group on file is Southern California Permanente Medical Group. Dmand AI also links Dr. An to 1 more hospital, named with a free account.

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

Orthopaedic surgery is Dr. An's primary specialty in the NPI Registry, under taxonomy code 207X00000X. Dr. An is board certified in orthopaedic surgery by the American Board of Orthopaedic Surgery. Dmand AI has Dr. An's licenses on file in 2 states: California and New York.

Dmand AI lists ankle or foot injury, arm, wrist, hand fracture and dislocation, arthritis, broken or dislocated ankle/ or foot, enthesopathy in foot or ankle, joint or bone infection, knee injury and leg, ankle or foot fracture among the conditions Dr. An treats.

CMS data shows 1,072 Medicare services from Dr. An across 10 procedure codes in 2024, for 410 Medicare patients. Medicare paid $78,987 for them.

CMS counts 410 Medicare patients who saw Dr. An in 2024. The largest group is 65 to 74, with 229 patients. 75% of them have high cholesterol, and 67% have arthritis. 13% are also on Medicaid. Their average risk score is 1.08, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. An's median patient age at 59, with 59% women.

In 2024, Dr. An wrote 146 Medicare Part D claims for 46 patients. 100% of them were for generic drugs. CMS names the drug for 123 of them, across 4 drugs with 11 or more claims each, at $623 in total drug cost. In 2023, CMS named 33 claims across 2 drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 89 out of 100 for Dr. An for performance year 2024, reported as part of a group. CMS lists Dr. An as offering telehealth.

Lower limb (leg) arthroscopy (minimally invasive joint repair): 1 to 10 procedures (CMS shows small counts as a range)

Removal of nail tissue: 1 to 10 procedures (CMS shows small counts as a range)

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

Dmand AI links 21 papers to Dr. An, published from 2016 to 2023. 2022 was the busiest year, with 5. The most frequent topics are Osteotomy, Flatfoot and Foot Deformities. Dr. An has published most often in Foot Ankle Orthop. Dr. An's most frequent co-authors are Scott J. Ellis, MD, Martin I. Boyer, MD and Jeffrey Jerome Nepple, MD.

CMS Open Payments shows 109 general payments to Dr. An from 8 drug and device companies from 2020 to 2025. Consulting fees make up the largest share, 55% of the total. Treace Medical Concepts, Inc. paid the most, $24,626.

Dr. An graduated from WashU Medicine in 2015. Dr. An is a member of AAOS.

Dr. An is in network with 7 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. HMO plans come from the most carriers, 4. Check the plan with the practice before a visit.