Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. William R Marsh, MD

Individual provider Allergy & Immunology Physician · NPI 1447394168

Dr. William R Marsh, MD is an Allergy & Immunology Physician in Denver, Colorado. Licensed in Colorado. Registered with an NPI since 2007.

Licensed in
CO
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

10350 E Dakota Ave
Denver, CO 80247-1314
Phone: (303) 338-4545
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Allergy & Immunology Physician (primary) Taxonomy 207K00000X · Licence 24507 (CO)

Record details

NPI number1447394168
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 16, 2007
Last updated in NPPESFebruary 28, 2011
Mailing address10350 E Dakota Ave, Denver, CO 80247-1314

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