Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Mark J Kortebein, DDS

Individual provider Oral and Maxillofacial Surgery (Dentist) · NPI 1336233790

Mark J Kortebein, DDS is registered under Oral and Maxillofacial Surgery (Dentist) in Mequon, Wisconsin. Licensed in Wisconsin. Registered with an NPI since 2006.

Licensed in
WI
In the registry since
2006
What do these letters mean?
DDS — Doctor of Dental Surgery
A dentist. DDS and DMD are the same qualification — universities choose which title to award.

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Practice location Address checks out

10535 N Port Washington Rd Ste 102
Mequon, WI 53092-5583 Not confirmed with CMS for 18 years — call before visiting
Phone: (262) 241-0900
Fax: (262) 241-0904
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Oral and Maxillofacial Surgery (Dentist) (primary) Taxonomy 1223S0112X · Licence 4130-015 (WI)

Record details

NPI number1336233790
Entity typeIndividual (Type 1)
GenderMale
Credentials DDS
Sole proprietorNo
NPI enumeratedOctober 2, 2006
Last updated in NPPESFebruary 5, 2008

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients12
Services billed 18 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

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