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

Dr. Justin J Yoon, MD

Individual provider Endocrinology, Diabetes & Metabolism Physician · NPI 1669815247

Dr. Justin J Yoon, MD is an Endocrinology in Grafton, Wisconsin. Qualified in 2013, 13 years ago. Practices with Aurora Advanced Healthcare, Inc, a 1,101-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Rhode Island and Wisconsin.

Years since qualifying
13
Licensed in
RI, WI
In the registry since
2013
Specialties on file
3
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

215 W Washington St
Grafton, WI 53024
Phone: (262) 375-3700
Show map & directions

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

Specialties & licences

Endocrinology, Diabetes & Metabolism Physician (primary) Taxonomy 207RE0101X · Licence 69491-20 (WI)
Endocrinology, Diabetes & Metabolism Physician Taxonomy 207RE0101X · Licence LP03680 (RI)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1669815247
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 12, 2013
Last updated in NPPESAugust 5, 2024
Certification dateAugust 5, 2024

Medicare enrollment

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

Medicare specialtyENDOCRINOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2013 (13 years in practice)
Group practice Aurora Advanced Healthcare, Inc. — 1101 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services