Dr. Matthew William Vanneman, MD

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

Dr. Vanneman's NPI, 1538508627, was assigned on June 21, 2013. Dr. Vanneman graduated from Harvard Medical School in 2013. Dr. Vanneman holds California license A168103.

Dr. Vanneman'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. Vanneman'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. Vanneman to 1 more hospital and 1 medical group, each named with a free account. Dr. Vanneman's employer is on file too: a hospital.

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

Anesthesiology is Dr. Vanneman's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dr. Vanneman is board certified in adult cardiac anesthesiology by the American Board of Anesthesiology. Dmand AI has Dr. Vanneman's licenses on file in 2 states: California and Massachusetts.

CMS data shows 99 Medicare services from Dr. Vanneman across 5 procedure codes in 2024, for 88 Medicare patients. Medicare paid $14,583 for them. Every service was in a facility, such as a hospital, rather than an office.

CMS counts 88 Medicare patients who saw Dr. Vanneman in 2024. The largest group is 65 to 74, with 35 patients. 75% of them have atrial fibrillation, and 75% have heart failure. 26% are also on Medicaid. Their average risk score is 2.15, 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. Vanneman's median patient age at 60, with 35% women.

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

Dmand AI links 40 papers to Dr. Vanneman, published from 2008 to 2025. 2023 was the busiest year, with 7. The most frequent topics are Cancer Vaccines, Anesthesiologists and Aortic Valve. Dr. Vanneman has published most often in J Cardiothorac Vasc Anesth. Dr. Vanneman's most frequent co-authors are Vikram Fielding-Singh, MD, Perin Ajay Kothari, DO and Natalie Jordan Bodmer, MD.

CMS Open Payments shows 2 general payments to Dr. Vanneman from 2 drug and device companies from 2019 to 2024. Food and beverage make up the largest share, 100% of the total. Intercept Pharmaceuticals, Inc. paid the most, $25.

Dr. Vanneman graduated from Harvard Medical School in 2013.

Dr. Vanneman is in network with 3 carriers, including CMS Medicare, RI State Medicaid and VT State Medicaid. Medicaid plans come from the most carriers, 2. Check the plan with the practice before a visit.