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

Marshall P Welch, MD

Individual provider Dermatology Physician · NPI 1346326162

Marshall P Welch, MD is a Dermatology Physician in Seattle, Washington. Licensed in Washington. Registered with an NPI since 2006.

Licensed in
WA
In the registry since
2006
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

325 9th Ave
Seattle, WA 98104-2499
Phone: (206) 744-3000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Dermatology Physician (primary) Taxonomy 207N00000X · Licence MD00026572 (WA)

Record details

NPI number1346326162
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 27, 2006
Last updated in NPPESAugust 22, 2019
Mailing address1730 Minor Ave, Ste 1000, Seattle, WA 98101-1464

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