Dr. Nicholas Wiessner Larsen, MD

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

Dr. Larsen's NPI, 1508212663, was assigned on May 9, 2016. Dr. Larsen graduated from Spencer Fox Eccles School of Medicine in 2016. Dr. Larsen's California license number on file is A155442.

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

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

Clinical neurophysiology is Dr. Larsen's primary specialty in the NPI Registry, under taxonomy code 2084N0600X. Dr. Larsen is board certified in neurology by the American Board of Psychiatry and Neurology. Dr. Larsen has a license on file in California.

Dmand AI lists epilepsy, lower back pain, muscle disease, muscle pain, fibromyalgia, and limb pain, muscle weakness, neuropathy, non-alzheimer's dementia (chronic) and parkinson's disease among the conditions Dr. Larsen treats.

CMS data shows 105 Medicare services from Dr. Larsen across 4 procedure codes in 2024, for 87 Medicare patients. Medicare paid $12,120 for them.

CMS counts 87 Medicare patients who saw Dr. Larsen in 2024. The largest group is 65 to 74, with 38 patients. 72% of them have high cholesterol, and 69% have high blood pressure. 18% are also on Medicaid. Their average risk score is 1.82, 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. Larsen's median patient age at 44, with 69% women.

In 2024, Dr. Larsen wrote 100 Medicare Part D claims for 37 patients. 99% of them were for generic drugs. CMS names the drug for 64 of them, across 4 drugs with 11 or more claims each, at $2,813 in total drug cost. In 2023, CMS named 104 claims across 4 drugs.

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

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

Dmand AI links 14 papers to Dr. Larsen, published from 2020 to 2025. 2021 was the busiest year, with 6. The most frequent topics are Autonomic Nervous System, COVID-19 and Post-Acute COVID-19 Syndrome. Dr. Larsen has published most often in Clin Auton Res. Dr. Larsen's most frequent co-authors are Mitchell Gordon Miglis, MD, Srikanth Muppidi, MD and Hector F. Bonilla, MD.

Dr. Larsen graduated from Spencer Fox Eccles School of Medicine in 2016.

Dr. Larsen is in network with 6 carriers, including Aetna, Blue Cross Blue Shield of Massachusetts and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.