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

Dr. William John Geimeier, MD

Individual provider Allergy Physician · NPI 1003848474

Dr. William John Geimeier, MD is an Allergy Physician in Newark, Delaware. Practices as a sole proprietor. Licensed in Delaware.

Licensed in
DE
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

179 W Chestnut Hill Rd Ste 1
Newark, DE 19713-2210
Phone: (302) 453-1343
Fax: (302) 453-1654
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Allergy Physician (primary) Taxonomy 207KA0200X · Licence C1-0001765 (DE)

Record details

NPI number1003848474
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJuly 7, 2006
Last updated in NPPESJuly 8, 2007
Mailing address179 W Chestnut Hill Rd, Suite 1, Newark, DE 19713-2210

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