Our Providers

Morris Levin, MD
Rebecca Michael, MD
Nina Riggins, MD
Alexander Yoo, MD
Annika Ehrlich, MS, FNP-C, CNRN



Morris Levin, MD

Professor UCSF School of Medicine
Director UCSF Headache Center and UCSF Headache Medicine Training Fellowship Program
(Full UCSF Profile)


Dr. Levin directs the UCSF Headache Center and the UCSF Headache Medicine Training Fellowship Program. He did his undergraduate degree at Stanford University (BS in Biological Sciences, 1976), and MD degree at the Chicago Medical School (1980). His neurology residency training was at the Albert Einstein College of Medicine in New York. Dr. Levin learned Headache Medicine at two places – the Montefiore Headache Unit in New York, and the Michigan Head-Pain and Neurological Institute in Ann Arbor, Michigan. He is board certified in Neurology with special qualification in Pain Medicine (ABPN) and board certified in Headache Medicine (UCNS) as well.

He has authored a number of medical journal articles and textbook chapters in the areas of headache and pain, and is also the author or co-author of several books, including Neurology Clinical Case Studies (Anadem 2003), Comprehensive Review of Headache Medicine (Oxford University Press 2008), Head, Neck and Facial Pain (Anadem 2006), Educational Review Manual in Neurology (Castle Connolly 2006), Headache and Facial Pain (Oxford University Press 2009), Refractory Migraine (Oxford University Press 2010), and Emergency Neurology (Oxford University Press 2013). Dr. Levin has just written a book for patients about migraine headaches, "Understanding Your Migraines" which should be on shelves soon (published by Oxford University Press).

Dr. Levin is an active member of the American Headache Society, International Headache Society, Headache Cooperative of New England, Headache Cooperative of the Pacific, American Neurological Association, and the American Academy of Neurology. He is very interested in research in the field of Headache Medicine, in particular, the way we diagnose the various types of headache disorders including migraine, cluster headaches, post-traumatic headaches and cervicogenic headaches.


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Rebecca Michael




Please check back later to find out more about Dr. Michael.









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Nina Riggins, MD

Assistant Professor UCSF School of Medicine
(Full UCSF Profile)


Dr. Riggins received her degree in medicine from the Volgograd School of Medicine and did her residencies at both the Volgograd Regional Hospital and at Penn State Milton S Hershey Medical Center. Her fellowships were at the Volgograd Regional Hospital and at State University of NY at Buffalo.

Dr. Riggins co-authored Exacerbation of headache during dihydroergotamine for chronic migraine does not alter outcome in 2016.




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Alexander Yoo




Please check back later to find out more about Dr. Yoo.









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Annika Ehrlich, MS, FNP-C, CNRN




Please check back later to find out more about Annika.









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