Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Claus Z Simonsen, MD, PHD

Individual provider Neurology Physician · NPI 1649400276

Claus Z Simonsen, MD, PHD is a Neurology Physician in Boston, Massachusetts. Licensed in Massachusetts. Registered with an NPI since 2009.

Licensed in
MA
In the registry since
2009
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Partly verified

Some contact details are missing from the federal record.

Massachusetts General Hospital 55 Fruit St
Boston, MA 02114
Phone: (617) 726-2066
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Neurology Physician (primary) Taxonomy 2084N0400X · Licence L-240559 (MA)

Record details

NPI number1649400276
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , PHD
Sole proprietorNo
NPI enumeratedJuly 16, 2009
Last updated in NPPESJuly 16, 2009

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