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

Individual provider Internal Medicine Physician · NPI 1477726917

Dr. Josefina Diaz Shen, MD practises Endocrinology in Grand Rapids, Michigan. Graduated from Michigan State University College of Human Medicine in 2004, 22 years ago. Practices with Advantage Health/Saint Mary's Medical Group, a 494-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Illinois and Michigan.

Years since qualifying
22
Trained at
Michigan State University College of Human Medicine
Licensed in
IL, MI
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.

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Practice location Address checks out

300 Lafayette Ave SE Ste 2045
Grand Rapids, MI 49503-4692 Not confirmed with CMS for 14 years — call before visiting
Phone: (616) 685-3098
Fax: (616) 685-3095
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Endocrinology, Diabetes & Metabolism Physician (primary) Taxonomy 207RE0101X · Licence 4301101073 (MI)
Internal Medicine Physician Taxonomy 207R00000X · Licence 036117976 (IL)

Record details

NPI number1477726917
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 4, 2008
Last updated in NPPESJuly 6, 2012

Medicare enrollment

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

Medicare specialtyENDOCRINOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolMICHIGAN STATE UNIVERSITY COLLEGE OF HUMAN MEDICINE
Graduated 2004 (22 years in practice)
Group practice Advantage Health/Saint Mary'S Medical Group — 494 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations4 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients141
Services billed 297 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Advantage Health/Saint Mary's Medical Group

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 494 clinicians in the practice; 12 are shown here.

Other providers in Grand Rapids