Dr. Patrick C. Ahearn, MD

Dr. Ahearn practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University.

Dr. Ahearn's NPI, 1972878072, was assigned on March 21, 2012. Dr. Ahearn graduated from UC Irvine School of Medicine in 2012. Dr. Ahearn holds California license A129551.

Dr. Ahearn's primary practice is Stanford Hospital at 300 Pasteur Drive, at 300 Pasteur Drive, Stanford, CA 94305 in Santa Clara County. The practice phone is (650) 723-4000.

Dr. Ahearn's primary practice is Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University. Dr. Ahearn is also affiliated with Stanford Health Care Tri-Valley. The medical group on file is Stanford Health Care. Dmand AI also links Dr. Ahearn to 1 more hospital and 1 medical group, each named with a free account. Dr. Ahearn's employer is on file too: a hospital.

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

Nephrology is Dr. Ahearn's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Ahearn is board certified in internal medicine by the American Board of Internal Medicine. Dr. Ahearn is licensed in California.

Dmand AI lists chronic anemia, chronic kidney disease and fluid and electrolyte imbalances among the conditions Dr. Ahearn treats.

CMS data shows 761 Medicare services from Dr. Ahearn across 7 procedure codes in 2024, for 244 Medicare patients. Medicare paid $75,450 for them.

CMS counts 244 Medicare patients who saw Dr. Ahearn in 2024. The largest group is under 65, with 128 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 54% are also on Medicaid. Their average risk score is 5.72, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Ahearn's median patient age at 52, with 41% women.

In 2024, Dr. Ahearn wrote 1,317 Medicare Part D claims for 106 patients. 87% of them were for generic drugs. CMS names the drug for 1,049 of them, across 25 drugs with 11 or more claims each, at $59,800 in total drug cost. In 2023, CMS named 845 claims across 21 drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 89 out of 100 for Dr. Ahearn for performance year 2024, reported as part of a group. Dr. Ahearn accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Ahearn as offering telehealth.

Dmand AI links 13 papers to Dr. Ahearn, published from 2018 to 2025. 2021 was the busiest year, with 3. The most frequent topics are Kidney Transplantation, Antibodies, Viral and COVID-19. Dr. Ahearn's most frequent co-authors are Elaine Ku, MD, Jonathan Maltzman, MD and Jane C. Tan, MD.

CMS Open Payments shows 4 general payments to Dr. Ahearn from 3 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 96% of the total. Alexion Pharmaceuticals, Inc. paid the most, $116.

Dr. Ahearn graduated from UC Irvine School of Medicine in 2012.

Dr. Ahearn is in network with 10 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.