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

Robert N Holdefer, PHD

Individual provider Electroneurodiagnostic Specialist/Technologist · NPI 1699714832

Robert N Holdefer, PHD is an Electroneurodiagnostic Specialist/Technologist in Milwaukee, Wisconsin. Registered with an NPI since 2006.

In the registry since
2006
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

See every abbreviation used in this directory →

Practice location Address checks out

8832 N Port Washington Rd Ste 240
Milwaukee, WI 53217-1628
Phone: (414) 351-6666
Fax: (414) 351-6999
Show map & directions

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

Specialties & licences

Electroneurodiagnostic Specialist/Technologist (primary) Taxonomy 246ZE0600X

Record details

NPI number1699714832
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorNo
NPI enumeratedJune 5, 2006
Last updated in NPPESJuly 13, 2026
Mailing address8832 N Port Washington Rd, Suite 240, Milwaukee, WI 53217-1628

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