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

Gregory J Deines, DO

Individual provider Endocrinology, Diabetes & Metabolism Physician · NPI 1427098532

Gregory J Deines, DO is an Endocrinology in Grand Rapids, Michigan. Graduated from Michigan State University College of Osteopathic Medicine in 1998, 28 years ago. Practices with Spectrum Health Primary Care Partners, a 2,303-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Michigan.

Years since qualifying
28
Trained at
Michigan State University College of Osteopathic Medicine
Licensed in
MI
In the registry since
2006
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

See every abbreviation used in this directory →

Practice location Address checks out

221 Michigan St NE Ste 200
Grand Rapids, MI 49503-2543
Phone: (616) 267-8950
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 5101013842 (MI)

Record details

NPI number1427098532
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedJune 7, 2006
Last updated in NPPESMarch 2, 2021
Certification dateMarch 2, 2021
Mailing address100 Michigan St Ne, Mc 845, Grand Rapids, MI 49503-2560

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 OSTEOPATHIC MEDICINE
Graduated 1998 (28 years in practice)
Group practice Spectrum Health Primary Care Partners — 2303 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations14 on file with Medicare

Other providers in Grand Rapids