Dr. Justin Ahn, MD

Dr. Ahn practices at UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco, California, part of University of California Health.

Dr. Ahn's NPI, 1063755148, was assigned on March 27, 2013. Dr. Ahn graduated from UT Southwestern Medical Center in 2013. Dr. Ahn holds California license A160202.

Dr. Ahn's primary practice is UCSF Helen Diller Medical Center at Parnassus Heights, at 505 Parnassus Ave, Box 0296, San Francisco, CA 94143 in San Francisco County. The practice phone is (415) 353-2733.

Dr. Ahn's primary practice is UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco, California, part of University of California Health. Dr. Ahn is also affiliated with Dignity Health - Sequoia Hospital. The medical group on file is UCSF Pediatrics. Dmand AI also links Dr. Ahn to 3 more group practices and clinics and 3 medical groups, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ahn practices, 5 sites in all. Vendor and product names are available with a free account.

Urology is Dr. Ahn's primary specialty in the NPI Registry, under taxonomy code 208800000X. Dr. Ahn is board certified in urology by the American Board of Urology. Dmand AI has Dr. Ahn's licenses on file in 3 states: California, Washington and Alaska.

Dmand AI lists bladder disease, enlarged prostate, enlarged prostate transurethral surgery (TURP), erectile dysfunction, kidney removal surgery, kidney stone disease, urinary endoscopy and urine flow blockage among the conditions Dr. Ahn treats.

CMS data shows 1,306 Medicare services from Dr. Ahn across 19 procedure codes in 2024, for 281 Medicare patients. Medicare paid $143,529 for them.

CMS counts 281 Medicare patients who saw Dr. Ahn in 2024. The largest group is 65 to 74, with 139 patients. 75% of them have high cholesterol, and 74% have high blood pressure. 17% are also on Medicaid. Their average risk score is 1.38, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Ahn's median patient age at 67, with 21% women.

In 2024, Dr. Ahn wrote 418 Medicare Part D claims for 132 patients. 88% of them were for generic drugs. CMS names the drug for 298 of them, across 11 drugs with 11 or more claims each, at $29,869 in total drug cost. In 2023, CMS named 110 claims across 5 drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 87 out of 100 for Dr. Ahn for performance year 2024, reported as part of a group. Dr. Ahn accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Ahn as offering telehealth. CMS counts 33 procedures of prostate resection by Dr. Ahn, more than 93% of the clinicians it reports for that procedure.

Dmand AI links 29 papers to Dr. Ahn, published from 2005 to 2024. 2021 was the busiest year, with 4. The most frequent topics are Kidney Calculi, Ultrasonography and Clinical Competence. Dr. Ahn has published most often in J Endourol. Dr. Ahn's most frequent co-authors are Marshall L. Stoller, MD, David B. Bayne, MD and Fadl Hamouche, MD.

CMS Open Payments shows 61 general payments to Dr. Ahn from 9 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 61% of the total. Boston Scientific Corporation paid the most, $2,755.

Dr. Ahn graduated from UT Southwestern Medical Center in 2013.

Dr. Ahn is in network with 10 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.