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

Individual provider Internal Medicine Physician · NPI 1093958548

Crystal Ritsema, MD is an Internal Medicine in Grand Rapids, Michigan. Graduated from Wayne State University School of Medicine in 2009, 17 years ago. Practices with Spectrum Health Hospitals, a 165-clinician group and accepts Medicare assignment. Licensed in Michigan.

Years since qualifying
17
Trained at
Wayne State University School of Medicine
Licensed in
MI
In the registry since
2009
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

275 Michigan St NE
Grand Rapids, MI 49503-2531
Phone: (616) 397-3777
Fax: (616) 391-3755
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 4301108709 (MI)

Record details

NPI number1093958548
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 14, 2009
Last updated in NPPESJanuary 13, 2025
Certification dateJanuary 13, 2025

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolWAYNE STATE UNIVERSITY SCHOOL OF MEDICINE
Graduated 2009 (17 years in practice)
Group practice Spectrum Health Hospitals — 165 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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