Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Dr. Eric C. Santos, MD

Individual provider Hematology & Oncology Physician · NPI 1174700256

Dr. Eric C. Santos, MD practises Hematology/Oncology in Grand Rapids, Michigan. Qualified in 1993, 33 years ago. Practices with Cancer and Hematology Centers of Western Mi, PC, a 109-clinician group and accepts Medicare assignment. Licensed in Michigan.

Years since qualifying
33
Licensed in
MI
In the registry since
2008
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

145 Michigan St NE Ste 3100
Grand Rapids, MI 49503-2562
Phone: (616) 954-9800
Fax: (616) 954-2116
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hematology & Oncology Physician (primary) Taxonomy 207RH0003X · Licence 4301100032 (MI)

Record details

NPI number1174700256
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 30, 2008
Last updated in NPPESMarch 17, 2020
Certification dateMarch 17, 2020

Medicare enrollment

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

Medicare specialtyHEMATOLOGY/ONCOLOGY
Medical schoolOTHER
Graduated 1993 (33 years in practice)
Group practice Cancer And Hematology Centers Of Western Mi, P.C. — 109 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations5 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 patients312
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.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $566 24 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

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

  • Corewell Health Pennock Hospital Hospital · Hastings, MI · listed as Pennock Hospital
  • Mercy Health Saint Mary'S Hospital · Grand Rapids, MI
  • Spectrum Health Hospital · Grand Rapids, MI · listed as Spectrum Health Hospital
  • Spectrum Health United Hospital Hospital · Greenville, MI · listed as Spectrum Health Hospital
  • Corewell Health Big Rapids Hospital Hospital · Big Rapids, MI
  • Corewell Health Visiting Nurse Association Home health agency · Grand Rapids, MI
  • Corewell Health Hospice & Palliative Care - West Michigan Hospice · Grand Rapids, MI

Colleagues at Cancer and Hematology Centers of Western Mi, PC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 109 clinicians in the practice; 12 are shown here.

Other providers in Grand Rapids