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

Daniel Isaac, DO

Individual provider Internal Medicine Physician · NPI 1326486416

Daniel Isaac, DO is a Hematology/Oncology in Grand Rapids, Michigan. Qualified in 2013, 13 years ago. Practices with McLaren Greater Lansing, a 96-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Michigan.

Years since qualifying
13
Licensed in
MI
In the registry since
2013
Specialties on file
2
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 →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

145 Michigan St NE Ste 2200
Grand Rapids, MI 49503-2562
Phone: (616) 486-5933
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Additional practice locations (1)

  • 3520 Forest Rd, Lansing, MI 48910-3720 — (517) 975-9500

Specialties & licences

Hematology & Oncology Physician (primary) Taxonomy 207RH0003X · Licence 5101020392 (MI)
Internal Medicine Physician Taxonomy 207R00000X · Licence 5101020392 (MI)

Record details

NPI number1326486416
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedJune 11, 2013
Last updated in NPPESMarch 12, 2026
Certification dateMarch 12, 2026

Medicare enrollment

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

Medicare specialtyHEMATOLOGY/ONCOLOGY
Medical schoolOTHER
Graduated 2013 (13 years in practice)
Group practice McLaren Greater Lansing — 96 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Other providers in Grand Rapids