National Provider Identifier Database

WILLIS J RIEKER JR, MD – NPI #1689714834
Cytopathology

A cytopathologist is an anatomic pathologist trained in the diagnosis of human disease by means of the study of cells obtained from body secretions and fluids, by scraping, washing, or sponging the surface of a lesion, or by the aspiration of a tumor mass or body organ with a fine needle. A major aspect of a cytopathologist?s practice is the interpretation of Papanicolaou-stained smears of cells from the female reproductive systems, the ?Pap? test. However, the cytopathologist?s expertise is applied to the diagnosis of cells from all systems and areas of the body. He/she is a consultant to all medical specialists.


Contact Information

WILLIS J RIEKER JR, MD
1969 W HART RD
BELOIT, WI53511-2230
Phone: 608-364-5131
Fax: 608-364-3185
Website:
Specialty Taxonomy Code
* Cytopathology 207ZC0500X
Anatomic Pathology & Clinical Pathology 207ZP0102X

* Indicates primary specialty

NPI Profile & details for WILLIS J RIEKER JR

NPI Number 1689714834
Credentials MD
Entity Individual
Enumeration date 02/07/2007
Last updated 09/11/2025 - About 9 months ago
Sole proprietor1 Yes
Identifiers
  • WI License #: 35629-020
  • WI Medicaid: 32846400
Hospital affiliation n/a

1 A sole proprietor/sole proprietorship is an individual, and as such, is eligible for a single NPI number. The sole proprietor must apply for the NPI number using his or her own Social Security Number (SSN), not an Employer Identification Number (EIN) even if he/she has an EIN.

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