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

Guillermo Rafael Ethier, DNP

Individual provider Nurse Practitioner · NPI 1154012433

Guillermo Rafael Ethier, DNP is a Nurse Practitioner in Royal Oak, Michigan. Graduated from University of Michigan Medical School in 2023, 3 years ago. Practices with Downriver Mental Health Clinic PC, a 288-clinician group and accepts Medicare assignment. Licensed in Michigan.

Years since qualifying
3
Trained at
University of Michigan Medical School
Licensed in
MI
In the registry since
2023
What do these letters mean?
DNP — Doctor of Nursing Practice
The highest clinical degree in nursing.

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Practice location Address checks out

3230 Garden Ave
Royal Oak, MI 48073-6525
Phone: (810) 240-1102
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Nurse Practitioner (primary) Taxonomy 363L00000X · Licence 4704371357 (MI)

Record details

NPI number1154012433
Entity typeIndividual (Type 1)
GenderMale
Credentials DNP
Sole proprietorYes
NPI enumeratedMay 17, 2023
Last updated in NPPESMay 17, 2023
Certification dateMay 17, 2023
Mailing address3230 Garden Ave, Royal Oak, MI 48073-6525

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNURSE PRACTITIONER
Medical schoolUNIVERSITY OF MICHIGAN MEDICAL SCHOOL
Graduated 2023 (3 years in practice)
Group practice Downriver Mental Health Clinic Pc — 288 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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