Dr. Irene Leonor Wapnir, MD

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

Dr. Wapnir's NPI, 1104951508, was assigned on February 23, 2007. Dr. Wapnir graduated from Autonomous Metropolitan University Xochimilco in 1980. Dr. Wapnir holds California license C50558.

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

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

Surgery is Dr. Wapnir's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Wapnir is board certified in surgery by the American Board of Surgery. Dmand AI has Dr. Wapnir's licenses on file in 4 states: California, New Jersey, New York and Maryland.

Dmand AI lists mastectomy among the conditions Dr. Wapnir treats.

CMS data shows 126 Medicare services from Dr. Wapnir across 6 procedure codes in 2024, for 93 Medicare patients. Medicare paid $33,417 for them. Every service was in a facility, such as a hospital, rather than an office.

CMS counts 93 Medicare patients who saw Dr. Wapnir in 2024. The largest group is 65 to 74, with 48 patients. 75% of them have cancer, and 65% have high cholesterol. 25% are also on Medicaid. Their average risk score is 1.19, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Wapnir's median patient age at 52, with 98% women.

In 2024, Dr. Wapnir wrote 12 Medicare Part D claims. 92% of them were for generic drugs. CMS names the drug for 11 of them, across 1 drug with 11 or more claims each, at $186 in total drug cost. In 2022, CMS named 14 claims across 1 drug.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 89 out of 100 for Dr. Wapnir for performance year 2024, reported as part of a group. Dr. Wapnir accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Wapnir as offering telehealth. CMS counts 41 procedures of mastectomy by Dr. Wapnir, more than 92% of the clinicians it reports for that procedure.

Skin biopsy: 1 to 10 procedures (CMS shows small counts as a range)

Dmand AI links 126 papers to Dr. Wapnir, published from 2004 to 2025. 2021 was the busiest year, with 10. The most frequent topics are Breast Neoplasms, Mastectomy and Mastectomy, Segmental. Dr. Wapnir has published most often in Ann Surg Oncol. Dr. Wapnir's most frequent co-authors are Eleftherios P. Mamounas, MD, Dung Hoang Nguyen and Jacqueline Tsai, MD.

Dmand AI links Dr. Wapnir to 17 clinical trials, 6 of them phase 3 studies. 6 are still active or recruiting. Conditions studied include Breast Neoplasms, Breast Diseases and Carcinoma, Intraductal, Noninfiltrating. Stanford University sponsors the most, 8.

CMS Open Payments shows 48 general payments to Dr. Wapnir from 14 drug and device companies from 2016 to 2025. Consulting fees make up the largest share, 44% of the total. Amgen Inc. paid the most, $11,343. It also lists 3 research payments totaling $3,803 from 2020 to 2024.

Dmand AI lists 4 awards for Dr. Wapnir, most recently America's Top Doctors in 2018.

Dr. Wapnir graduated from Autonomous Metropolitan University Xochimilco in 1980. Dr. Wapnir is a member of ACS and ASCO.

Dr. Wapnir is in network with 9 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Elevance. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.