Dr. William John Marks, MD

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

Dr. Marks' NPI, 1053341693, was assigned on July 3, 2006. Dr. Marks graduated from The Johns Hopkins University School of Medicine in 1991. Dr. Marks holds California license A51191.

Dr. Marks' 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. Marks' 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. Marks to 1 more hospital, named with a free account. Dr. Marks' employer is on file too: a hospital.

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

Neurology is Dr. Marks' primary specialty in the NPI Registry, under taxonomy code 2084N0400X. Dr. Marks is board certified in neurology by the American Board of Psychiatry and Neurology. Dr. Marks is licensed in California.

Dmand AI lists parkinson's disease among the conditions Dr. Marks treats.

CMS data shows 17 Medicare services from Dr. Marks across 1 procedure code in 2019, all of them office visits, for 11 Medicare patients. Medicare paid $324 for them. Every service was in a facility, such as a hospital, rather than an office.

CMS counts 11 Medicare patients who saw Dr. Marks in 2024. Their average risk score is 1.52, 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. Marks' median patient age at 65, with 30% women.

In 2024, Dr. Marks wrote 99 Medicare Part D claims for 15 patients. 91% of them were for generic drugs. CMS names the drug for 85 of them, across 4 drugs with 11 or more claims each, at $4,528 in total drug cost. In 2023, CMS named 75 claims across 3 drugs.

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

Dmand AI links 39 papers to Dr. Marks, published from 2004 to 2020. 2016 was the busiest year, with 3. The most frequent topics are Parkinson Disease, Deep Brain Stimulation and Electrodes, Implanted. Dr. Marks has published most often in Mov Disord. Dr. Marks' most frequent co-authors are Philip A. Starr, MD, Jill Louise Ostrem, MD and Michael J. Aminoff, MD.

Dmand AI links Dr. Marks to 2 clinical trials. Conditions studied include Parkinson Disease and Parkinsonian Disorders.

CMS Open Payments shows 118 general payments to Dr. Marks from 6 drug and device companies from 2016 to 2025. Speaker and faculty fees make up the largest share, 82% of the total. Medtronic USA, Inc. paid the most, $70,783.

Dr. Marks graduated from The Johns Hopkins University School of Medicine in 1991.

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