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

Dr. Erin Alexa Day, DO

Individual provider Internal Medicine Physician · NPI 1891589230

Dr. Erin Alexa Day, DO is an Internal Medicine Physician in Grand Rapids, Michigan. Licensed in Michigan. Registered with an NPI since 2025.

Licensed in
MI
In the registry since
2025
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

275 Michigan St NE Fl 9
Grand Rapids, MI 49503-2531
Phone: (616) 391-3777
Fax: (616) 391-3755
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 5151017397 (MI)

Record details

NPI number1891589230
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorNo
NPI enumeratedApril 9, 2025
Last updated in NPPESMay 13, 2026
Certification dateMay 13, 2026
Mailing address25 Michigan St Ne Ste 2100, Grand Rapids, MI 49503-2526

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