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

Joan M Crennan, MD

Individual provider Internal Medicine Physician · NPI 1679666952

Joan M Crennan, MD is an Internal Medicine Physician in Appleton, Wisconsin. Licensed in Wisconsin. Registered with an NPI since 2006.

Licensed in
WI
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

1665 N McCarthy Rd Apt 10
Appleton, WI 54913-5458
Phone: (505) 321-4094
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 39221 (WI)

Record details

NPI number1679666952
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 1, 2006
Last updated in NPPESJuly 8, 2007

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