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

Dr. Reginald Sy Cosiquien, MD

Individual provider Geriatric Medicine (Family Medicine) Physician · NPI 1164699666

Dr. Reginald Sy Cosiquien, MD is a Family Practice in Eau Claire, Wisconsin. Qualified in 2001, 25 years ago. Practices with Mayo Clinic Health System-Northwest Wisconsin Region Inc, a 799-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Wisconsin.

Years since qualifying
25
Licensed in
WI
In the registry since
2008
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

733 W Clairemont Ave
Eau Claire, WI 54701-6101
Phone: (715) 838-5222
Show map & directions

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

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 50845-020 (WI)
Geriatric Medicine (Family Medicine) Physician Taxonomy 207QG0300X · Licence 50845-020 (WI)

Record details

NPI number1164699666
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 14, 2008
Last updated in NPPESSeptember 14, 2020
Certification dateSeptember 14, 2020

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Also practisesGERIATRIC MEDICINE
Medical schoolOTHER
Graduated 2001 (25 years in practice)
Group practice Mayo Clinic Health System-Northwest Wisconsin Region Inc — 799 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services