National Provider Identifier Database

GAY D TREPANIER, MD – NPI #1164415709
Geriatric Medicine

A family medicine physician with special knowledge of the aging process and special skills in the diagnostic, therapeutic, preventive and rehabilitative aspects of illness in the elderly. This specialist cares for geriatric patients in the patient's home, the office, long-term care settings such as nursing homes, and the hospital.


Contact Information

GAY D TREPANIER, MD
481 E DIVISION ST
SUITE 100
FOND DU LAC, WI54935-3748
Phone: 920-929-8120
Fax: 920-929-8126
Website:
Specialty Taxonomy Code
* Geriatric Medicine 207QG0300X
Family Medicine 207Q00000X

* Indicates primary specialty

NPI Profile & details for GAY D TREPANIER

NPI Number 1164415709
Credentials MD
Entity Individual
Enumeration date 08/30/2005
Last updated 09/11/2025 - About 9 months ago
Sole proprietor1 No
Identifiers
  • WI License #: 16852
  • WI Medicaid: 31081800
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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